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Crutch is able to bypass some security layers by abusing legitimate infrastructure – here Dropbox – in order to blend into normal network traffic while exfiltrating stolen documents and receiving commands from its operators | ['T1102.002'] |
Some of the executables pack the collected data into a password protected archive and save it to the disk, while others send the data to the C&C server directly | ['T1074.001', 'T1560'] |
Woburn, MA – May 7, 2018 – Kaspersky Lab researchers have discovered a new variant of the SynAck ransomware Trojan using the Doppelgänging technique to bypass anti-virus security by hiding in legitimate processes. The developers behind SynAck also implement other tricks to evade detection and analysis, obfuscating all malware code prior to sample compilation and exiting if signs suggest it is being launched in a sandbox | ['T1027'] |
Monday, February 12, 2018 . Olympic Destroyer Takes Aim At Winter Olympics . This blog post is authored by Warren Mercer and Paul Rascagneres. The Guardian, a UK Newspaper reported an article that suggested the Olympic computer systems suffered technical issues during the opening ceremony. The destructive nature of this malware aims to render the machine unusable by deleting shadow copies, event logs and trying to use PsExec & WMI to further move through the environment. Olympic Destroyer Workflow . Initial stage . The initial edb1ff2521fb4bf748111f92786d260d40407a2e8463dcd24bb09f908ee13eb9 sample is a binary that, when executed, drops multiple files on to the victim host. Dropped Files . Browser Credential Stealer . Olympic Destroyer drops a browser credential stealer. SQLite is embedded in the sample: . System Credential Stealer . In additional to the browsers credential stealer, Olympic Destroyer drops and executes a system stealer. The stealer attempts to obtain credentials from LSASS with a technique similar to that used by Mimikatz. Additionally, the destroyer disables all the services on the system: The malware uses the ChangeServiceConfigW API to change the start type to 4 which means: "Disabled: Specifies that the service should not be started. Legitimate File . Additionally, the Olympic Destroyer drops the legitimate, digitally signed, PsExec file in order to perform lateral movement by using this legitimate tool from Microsoft. Disruption is the clear objective in this type of attack and it leaves us confident in thinking that the actors behind this were after embarrassment of the Olympic committee during the opening ceremony | ['T1070.001'] |
The dropper then decrypts the ciphertext by using an XOR cipher and a specific base64 encode string that is decoded and used as the key. Before accessing the ciphertext, the dropper subtracts 14 from the specified offset, which is the same as previous Disttrack samples delivered in Shamoon 2 attacks. Tables 1, 2, and 3 include the resources, the information used to extract them, and the resulting module | ['T1078.002'] |
We see it clustered here with some dynamic domain name system (DNS) domains. Dynamic DNS domains were observed in this cluster on later IP addresses as well, though this technique appears to have fallen out of favor, at least in this context, since there are none in this cluster currently active | ['T1568'] |
Regarding to downloading and executing a tool, Flagpro stores the downloaded file in file path “%Temp%\~MY[0-9A-F].tmp” first. Then, Flagpro adds extension “.exe” to the name of stored file and executes the file | ['T1036'] |
Because TA505 is such a significant part of the email threat landscape, this blog provides a retrospective on the shifting malware, payloads, and campaigns associated with this actor. We examine their use malware such as Jaff, Bart, and Rockloader that appear to be exclusive to this group as well as more widely distributed malware like Dridex and Pony. Where possible, we detail the affiliate models with which they are involved and outline the current state of TA505 campaigns | ['T1486'] |
In the example, the POWRUNER client sends a random GET request to the C2 server and the C2 server sends the random number (99999999990) as a response. As the response is a random number that ends with ‘0’, POWRUNER sends another random GET request to receive an additional command string. The C2 server sends back Base64 encoded response | ['T1132.001'] |
Using valid credentials, CARBON SPIDER moves laterally through victim environments using RDP and occasionally SSH. The adversary typically uses PS to run Cobalt Strike but occasionally writes Cobalt Strike stagers or KillACK backdoors to disk. Occasionally, CARBON SPIDER has deployed the legitimate GoToAssist or TightVNC tools to provide redundant control of hosts | ['T1021.005', 'T1021.001', 'T1021.004'] |
The test plugin attempts to connect to a provided address to check access to the network. Meanwhile, the reverse P2P plugin creates a proxy server to bridge the C&C and the client. This creates another connection to another C&C specified in the commands to act as a proxy, redirecting traffic from the infected machine to the real C&C server | ['T1090.002'] |
This adversary group is most commonly associated with a custom PowerShell implant identified as Helminth. The Helminth implant is routinely delivered through macro-enabled Microsoft Office documents requiring user interaction to execute an obfuscated Visual Basic Script | ['T1059.001'] |
In the old campaign the actor used TextBoxes to store its data while in the new one the content has been base64 encoded within the document content. In the new campaign JavaScript files have been used to execute batch and PowerShell files. The new campaign uses Powershell and URLMON API calls to download the cab file while in the old campaign it used certutil to download the cab file. The new campaign has used two different UAC bypass techniques based on the victim’s OS while in the old one the actor only used the Token Impersonation technique. In the new campaign the actor has developed a new variant of Konni RAT that is heavily obfuscated | ['T1105'] |
The notes also contain a threat to leak private information that has been collected from the target if the ransom is not paid | ['T1484.001', 'T1078.002'] |
AT&T Alien Labs™ has discovered a new campaign by threat group TeamTNT that is targeting multiple operating systems and applications. The campaign uses multiple shell/batch scripts, new open source tools, a cryptocurrency miner, the TeamTNT IRC bot, and more | ['T1547.001', 'T1059.003'] |
To do this, Tick uses a number of publicly available hacktools such as Mimikatz, GSecdump, and Windows Credential Editor. The tools are downloaded and deployed to the original install directory previously created by the malware | ['T1588.002'] |
It seems that the implementation for dynamic import resolution slightly varies in comparison to the one used in Azazel rootkit | ['T1014'] |
Throughout our StellarParticle investigations, CrowdStrike identified what appeared to be a VBScript-based Active Directory enumeration toolkit. While the script’s contents have not been recovered to date, CrowdStrike has observed identical artifacts across multiple StellarParticle engagements that suggest the same or similar tool was used | ['T1057'] |
If it is executed with the "help" parameter, it will install a service to execute itself as a service. This parameter is used by the trojanized installer. This has a notable side effect: if rmaserv.exe is executed isolated on a sandbox (so without the parameter), the service is not created. Consequently, the execution won't do anything and the dynamic analysis will be skewed. The second main feature is the service. This service has two features. First, it will launch the winprint32.exe executable (C2 contact module) and then it will wait for an event. This event is the mechanism used by the C2 contact module to alert the service executable to perform the cleaning of all components | ['T1569.002'] |
Network Reconnaissance – gathering information from machines on the network. Credential Theft – stealing user names and passwords, potentially to provide them with further access to the victim network. RAR archiving – files are transferred to staging servers before exfiltration. Csvde – can be used to extract Active Directory files and data. WMIExec – can be used for lateral movement and to execute commands remotely. PowerShell - a powerful interactive command-line interface and scripting environment included in the Windows operating system | ['T1074.002'] |
On balance, the fall campaigns diverged from Bulgarian themed NetWire campaigns in the early summer in scope and scale. These campaigns distributed NetWire variants which used Bulgarian email lures, leveraged geofencing, and downloading EXEs through certutils. The NetWire malware has been around since at least 2002 and has been consistently in use by various actors across the threat landscape. This analysis shows groupings of similar campaigns distributing NetWire based on message attributes, email lures and language, Office document metadata, VBA Macro code, and malware configuration | ['T1566.001', 'T1059.005'] |
This thread searches for for files with the following extensions on removable drives and copies them to ‘c:\system’ every 5 seconds | ['T1005', 'T1083', 'T1074.001', 'T1119', 'T1025'] |
Observed Clop samples try to kill several processes and services related to backups and security solutions. Clop also leverages Code Signing to evade detection. We observed the use of two signers during our research, as shown below in Figure 1 | ['T1553.002'] |
The FTP account information used in the malware can expose the C&C server to attacks. The string ‘victory’ used in the password has also been found in the b374k webshell used by the Kimsuky group | ['T1598.003', 'T1059.005', 'T1027'] |
The January 2022 version of PlugX malware utilizes RC4 encryption along with a hardcoded key that is built dynamically. For communications, the data is compressed then encrypted before sending to the command and control (C2) server and the same process in reverse is implemented for data received from the C2 server. e@T#L$PH%" as it is being passed along with the encrypted data. During the January 2022 campaigns, the delivered PlugX malware samples communicated with the C2 server 92.118.188[.]78 over port 187. In the February 2022 campaign, Proofpoint researchers observed a variation in which PlugX malware used an RC4 key that was sent to the bot in the first HTTP response which was then used to encrypt data going to the C2 server | ['T1071.001'] |
Stage 2 is also .NET DLL file that downloads a third file from parinari[.]xyz, converts it from ASCII to binary, and then creates a scheduled task to load it | ['T1053.005'] |
The plugin is designed to migrate the loader to the address space of another process. Injection parameters are set in the Lizar client configuration file. It should be noted that this plugin can be used not only to inject the loader, but also to execute other PE files in the address space of the specified process | ['T1055', 'T1055.002'] |
This release adds features to spawn processes with an alternate parent process. This release also gives the operator control over the script templates Cobalt Strike uses in its attacks and workflows. This release of Cobalt Strike pushes back on this technique with the ppid command. For example, if I’m in a user context, I might set explorer.exe as my parent with something plausible (e.g, iexplore.exe) for my temporary processes. If I’m in a SYSTEM context, I might use services.exe as my parent process and ask Beacon to use svchost.exe for its temporary processes. Beacon’s runu command runs an arbitrary command as a child of another parent. These commands offer means to spawn a payload, in another desktop session, without remote process injection. The Resource Kit . Cobalt Strike 3.8’s Resource Kit finally gives you a way to change Cobalt Strike’s built-in script templates. The Resource Kit is a collection of Cobalt Strike’s default script templates and a sample Aggressor Script to bring these into Cobalt Strike. The Resource Kit benefits from new Aggressor Script hooks to provide the PowerShell, Python, and VBA script templates Cobalt Strike uses in its workflows | ['T1078.003'] |
2) Shell scripts used to launch the QEMU images. 3) Daemons used to start the shell scripts at boot and keep them running. 4) A CPU monitor shell script with an accompanying daemon that can start/stop the mining based on CPU usage and whether the Activity Monitor process is running | ['T1057'] |
It does so by monitoring the content of the clipboard and if the data seem to be a cryptocurrency wallet, it replaces them with the attacker’s own. This technique is not new; it has been used by other malware in the past – even the infamous BackSwap banking trojan implemented it in its earliest stages | ['T1565.002'] |
The data exchanged between the module and the C&C is encrypted with a proprietary algorithm and then encoded as readable latin characters | ['T1132.002'] |
In earlier attacks, the group used malicious Microsoft Word documents to infect victims, with compromised websites being added to the mix as a more recent attack vector | ['T1566.001'] |
It eventually downloads a PowerShell module from an Amazon S3 bucket URL hxxps://s3[.]amazonaws[.]com/doclibrarysales/test[.]txt and then executes it | ['T1583.006', 'T1102'] |
The script variant of the Helminth Trojan consists of a VBScript and PowerShell script named update.vbs and dns.ps1. We aptly named this variant the script version, as we found another version of this Trojan that we will discuss later in this Appendix | ['T1059.005'] |
C2 commands are represented as seemingly random alphanumerical ASCII strings (e.g. These dynamic updates to Goldmax configuration data enable ability to set a new activation date, replace the existing C2 URL and User-Agent values, enable/disable decoy network traffic feature, and update the number range used by its PRNG | ['T1059.003'] |
In order to meet the phishing emails’ infrastructure requirements, disposable domains and emails were used as the delivery medium. On occasions, the phishing emails contained links to external domains to download the first stage, and sometimes the first stage was attached to the email itself | ['T1566.002'] |
Once installed, JSSLoader provides the threat group with a backdoor to the victim’s computer and the organization | ['T1204.002', 'T1047'] |
To do so, this malware attempts to spread to other systems on network using what are likely stolen administrator credentials. This is again similar to the 2012 Shamoon attacks, where compromised but legitimate credentials obtained in advance of the attacks were also hard coded into the malware to aid in its propagation. Disttrack also has the ability to download and execute additional applications to the system, as well as remotely set the date to start wiping systems | ['T1569.002'] |
This data theft module appears to have been compiled in May 2015 and is designed to watch removable drives and collect files from them, depending on a set of rules defined by the attackers. The stolen data is copied into a hidden directory as “%MYPICTURES%\%volume serial number%“, from where it can be exfiltrated by the attackers using one of the AZZY implants | ['T1074.001', 'T1025'] |
The implant consists of a modified Cisco IOS image that allows the attacker to load different functional modules from the anonymity of the internet. Each of the modules are enabled via the HTTP protocol (not HTTPS), using a specifically crafted TCP packets sent to the routers interface. The packets have a nonstandard sequence and corresponding acknowledgment numbers. The modules can manifest themselves as independent executable code or hooks within the routers IOS that provide functionality similar to the backdoor password | ['T1205'] |
Spearphishing Attachment (ATT&CK T1193) is one of the most used Initial Access techniques used by ransomware families as in Sodinokibi. Attackers use spam emails with an attached MS Office Word document including a malicious macro to download the ransomware to the target system. In order to show the lifecycle of Sodinokibi ransomware, we analyzed a Microsoft Word document. Sodinokibi is a “Ransomware-as-a-Service (RAAS) malware, so its distribution methods vary depending on the attacker distributing it | ['T1566.001'] |
Collects information about the infected system, network, drives, and installed applications. Saves the collected information to a file named “info” in “%appdata%\Micorosoft\Templates” and sends it to the C2 | ['T1082'] |
As can be seen from the Table 2 above, Kazuar has an extensive command set, many of which are similar in functionality as other backdoor Trojans. However, a few commands specific to Kazuar appear to be unique and are worth further discussion | ['T1029'] |
Adversaries aiming to exfiltrate large amounts of data will often use one or more systems or storage locations for intermittent storage of the collected data. This process is called staging and is one of the of the activities that NCC Group and Fox-IT has observed in the analysed C2 traffic | ['T1560.001', 'T1074.001', 'T1074.002'] |
The employee receiving this email downloaded and opened the document, which contained malicious code. Once the code was executed, a persistence mechanism was installed and a malicious password harvester was executed. In this instance, once the malicious code was executed, it dropped a malicious binary (DLL) similar to CobaltStrike, which subsequently created and executed additional files. The actor used the initially compromised system to escalate privileges and move laterally across additional systems on the network | ['T1566.001'] |
FANCY BEAR adversary used different tradecraft, deploying X-Agent malware with capabilities to do remote command execution, file transmission and keylogging. It was executed via rundll32 commands such as | ['T1059.003', 'T1059', 'T1218.011'] |
Lucifer is quite powerful in its capabilities. Not only is it capable of dropping XMRig for cryptojacking Monero, it’s also capable of command and control (C2) operation and self-propagation through the exploitation of multiple vulnerabilities and credential brute-forcing. Additionally, it drops and runs EternalBlue, EternalRomance, and DoublePulsar backdoor against vulnerable targets for intranet infections | ['T1210'] |
We have rounded up 220 samples of the CARBANAK backdoor and compiled a table that highlights some interesting details that we were able to extract. It should be noted that in most of these cases the backdoor was embedded as a packed payload in another executable or in a weaponized document file of some kind. The MD5 hash is for the original executable file that eventually launches CARBANAK, but the details of each sample were extracted from memory during execution. This data provides us with a unique insight into the operational aspect of CARBANAK and can be downloaded here | ['T1055.002'] |
The execution chain ensures that persistence is set on the affected system using a .lnk file in the Startup directory. The .lnk file shown in Figure 17 opens the malicious VBS dropped on the system | ['T1547.001'] |
In the final stage of its attacks, the TeleBots group always used the KillDisk malware to overwrite files with specific file extensions on the victims’ disks. The KillDisk malware used in the first wave of December 2016 attacks, instead of encrypting, simply overwrites targeted files | ['T1485'] |
If that configuration is not available, it utilizes a hardcoded configuration in the binary. The tool uses a custom binary protocol over sockets for its command and control communication with the GUP Proxy Tool and all transferred data is encrypted using a modified version of RC4 encryption | ['T1095'] |
The implant receives HTTP-based commands from a control server and parses the HTTP Content-Type and Content-Length from the HTTP header. If the HTTP Content-Type matches the following value, then the implant executes the command specified by the control server | ['T1071.001'] |
The compressed_data field is compressed using the common ZLIB compression algorithm. Additionally, in the event data is being sent via HTTP rather than HTTPS, the following additional encryption algorithm is applied to the POST data | ['T1560.002', 'T1573.001'] |
The macro creates a copy of the files with their proper extensions using Extensible Storage Engine Utilities (esentutil.exe) with the following commands (esentutil.exe is also a legitimate program that is pre-installed in Windows | ['T1036'] |
At the second stage, the attackers remotely connected to the device and scanned the local network seeking to gain access to public shared folders, web servers, and any other open resources. The aim was to harvest information about the network, above all, servers and workstations used for making payments. If the firewall blocked access from one segment of the network to another, but allowed a reverse connection, the attackers used a different payload to build tunnels | ['T1135'] |
Before being deleted, the DLL executes a string decoding routine that is designed to execute for about a minute, spiking central processing unit (CPU) usage for the regsvr32.exe process. Once the strings are decoded, the More_eggs components are decrypted, dropped to the system (normally in the %APPDATA%\Microsoft\ or %ProgramData%\Microsoft\ directories) and executed | ['T1140'] |
The very narrow and specific set of email identifiers and organizations observed by CTU researchers strongly indicate that the campaign is focused on U.S. Based on the identified targets, CTU researchers assess with low confidence that a Russian government-sponsored threat group may be responsible for this campaign. Third-party researchers attribute this campaign to the Russia-based IRON RITUAL threat group (also known as NOBELIUM and APT29). IRON RITUAL has been linked to the SUNBURST malware used in the SolarWinds supply chain attack | ['T1566.002'] |
Then the article describes how, since the beginning of 2019, the group has been leveraging self-extracting archives to run code | ['T1053.005', 'T1218.010', 'T1027'] |
Finally, the loader spawns cmd.exe to perform a series of reconnaissance commands to obtain information about the network and domain | ['T1482', 'T1059.003'] |
The checks are done in an obfuscated way within the jumble of the code that the malware has (in the virtual machine used here the Spanish language of Spain (es-ES) was used; it is the code 0xC0A that appears in the stack in the screenshot | ['T1082'] |
Gather the names of all services running on the system. Gather a list of the names of all processes running on the endpoint. Get Microsoft Version Number from the registry, specifically from reg key/value: HKEY_CLASSES_ROOT\Excel.Application\CurVer||Default. The instrumentor script also enables all macros for Office by setting the VBAWarnings registry value to 0x1 at: HKCU\Software\Microsoft\Office\<OfficeVersionNumber>.0\Word\Security\VBAWarnings = 0x1 | ['T1012'] |
It also creates a folder in C:\SDRSMLINK\ and shares this folder with the rest of the network | ['T1547.001', 'T1564.006'] |
In october 2016 Group-IB published the report about the Cobalt group. Now, a year later, this group is continuing to attack banks, which is reported monthly by Group-IB's Threat Intelligence team. Network penetration In all cases investigated by Group-IB, the Cobalt group used a set of spear phishing emails to gain initial access to the corporate infrastructure. However, some of the email addresses belong to employees that no longer work at the organization, which means that the Cobalt group likely uses out-of-date mailing lists. Provision of the malware survivability The Cobalt group uses different methods to ensure malware survivability on corporate networks. From our experience, the Cobalt group uses a new method to provide its survivability in every attack. The former module is installed on a system that has access to the Internet and provides interaction with the C&C server using HTTP/HTTPS/DNS protocols. Another module is installed even in systems that do not have Internet access, as, using SMB protocol (which is typically used within a local network), the SMB module is controlled via infected computers running the HTTP/HTTPS/DNS module. For interaction on HTTPS protocol, HTTP protocol profiles may be used with an indicated SSL certificate, but for data exchange on the DNS protocol, it requires DNS A, AAAA, and TXT records. Conclusion After infecting one computer on an organization's network, the Cobalt group analyzes the programs used on it and search for critical servers and the computers from which they are accessed | ['T1021.001'] |
We recently observed an instance where the FlawedAmmyy downloader was not digitally signed (FlawedAmmyy RAT payload is still signed, however). It could be a blip — perhaps a one-off — but it's still notable | ['T1553.002'] |
Its sole purpose is to load setup.dll using LoadLibraryA. If not, it will attempt to obtain such privileges using token impersonation if the version of Windows is below Windows 7 build 7601; otherwise it will attempt different UAC bypass techniques, allowing installation of the payload loader into one of | ['T1548.002'] |
Most of the infected sites use the TYPO3 CMS (see: https://typo3.org/), which could indicate the attackers are abusing a specific vulnerability in this publishing platform | ['T1071.001'] |
In the past, Emissary Panda has used many ways to target their victims, with the most notable being the exploits from the Hacking Team leak. Usually, the delivered payload is either the well-known ‘PlugX’ or ‘HttpBrowser’ RAT, a tool which is believed to have Chinese origins and to be used only by certain Chinese hacking groups | ['T1027'] |
Both RATs provide a wide range of functionality on the target machine, ranging from collecting files, watching the screen, to capturing passwords and keystrokes. The RATs also enable the operator to remotely delete files, and spy on the computer user via the microphone or webcam | ['T1070.004'] |
A copy of the initial EXE for GuLoader is made persistent, then the original is deleted from the infected user’s AppData\Local\Temp directory where it was originally saved. The GuLoader EXE is persistent through the Windows Registry under the following key | ['T1547.001'] |
And, of course, the attackers added the ability to control the infected machine. The code receives a binary blob official M.E.Doc server, decrypts it using the Triple DES algorithm, and, afterwards, decompresses it using GZip. The result is an XML file that could contain several commands at once. This remote control feature makes the backdoor a fully-featured cyberespionage and cybersabotage platform at the same time | ['T1070.004'] |
mailsearcher32 module This module searches the infected system’s files to gather email addresses for information-stealing purposes. Emotet, according to previous research by Brad Duncan, is also responsible for delivering this password-grabbing Trickbot variant, as well as Azorult, to users | ['T1083', 'T1087.003'] |
Otherwise, it will add the binary’s path to the Software\Microsoft\Windows\CurrentVersion\Run key with —Update as a parameter | ['T1547.001'] |
Once an attacker has admin access to a Domain Controller, the KRBTGT account password hashes can be extracted using Mimikatz | ['T1550.003'] |
The persistence mechanisms also change, offering the options to use XDG Autostart Entries and crontabs for persistence. We’ve waxed lyrical about crontabs before, but we haven’t explored XDG Autostart Entries in detail | ['T1547.013'] |
browser history from Firefox, Google Chrome, Microsoft Edge and Internet Explorer; - usernames and passwords stored in the listed browsers; - email accounts from Microsoft Outlook and Mozilla Thunderbird | ['T1555.003', 'T1087.003'] |
After using RTF files, the group started using self-extracting (SFX) archives that use common document icons in an attempt to further mislead their victims. It was briefly documented by Threatbook (in Chinese). When run, these self-extracting RAR files drop and execute DLL files (with a .ocx extension) with the final payload being the previously documented {A96B020F-0000-466F-A96D-A91BBF8EAC96}.dll. This section will describe the technique and what they have altered to achieve their goal | ['T1547.001'] |
H1N1 has added a plethora of new functionality in comparison to earlier reports. Throughout this blog series we will be analyzing the capabilities of H1N1 including: obfuscation, a User Account Control (UAC) bypass, information stealing, data exfiltration, loader/dropper, and self-propagation/lateral movement techniques used by this variant.1,2 | ['T1027'] |
Attempted to blend in with a file name that matched the system name it resided on - Configured for persistence via a crontab entry with a @reboot line - Used likely compromised infrastructure for C2 | ['T1036.005', 'T1036'] |
RAR archiving – files are transferred to staging servers before exfiltration. They may be encrypted or compressed, to make them easier to extract. Certutil – a command-line utility that can be exploited and used for various malicious purposes, such as to decode information, to download files, and to install browser root certificates. Adfind – a command-line tool that can be used to perform Active Directory queries. Csvde – can be used to extract Active Directory files and data. Ntdsutil – can be used as a credential-dumping tool. WMIExec – can be used for lateral movement and to execute commands remotely. It can be used to find information and execute code, and is frequently abused by malicious actors | ['T1560.001'] |
In order to collect even more information, from time to time the Zebrocy operators upload and use dumpers on victims’ machines. The current dumpers have some similarities with those previously used by the group. In this case, Yandex Browser, Chromium, 7Star Browser (a Chromium-based browser), and CentBrowser are targeted, as well as versions of Microsoft Outlook from 1997 through 2016 | ['T1555.003'] |
It also moves the JS file to ‘Shell.NameSpace(28)’ (‘ssfLOCALAPPDATA’ – ‘\AppData\Local’) and creates a scheduled task to use WScript to execute the file at every user log on. The installation routine then copies the keylogger to the registry, sets the uid + 0 flag to 1 to indicate that installation was completed, and executes the scheduled task it created | ['T1053.005'] |
BADFLICK: a backdoor that is capable of modifying the file system, generating a reverse shell, and modifying its command and control (C2) configuration. China Chopper: a simple code injection webshell that executes Microsoft .NET code within HTTP POST commands. This allows the shell to upload and download files, execute applications with web server account permissions, list directory contents, access Active Directory, access databases, and any other action allowed by the .NET runtime | ['T1059.004'] |
Then, the malware loads an executable file from WM_DSP resource and runs a shellcode that contains approximately1500 bytes (after decrypting it with XOR 0x45 | ['T1140'] |
Kimsuky uses memory dump programs instead of using well-known malicious software and performs the credential extraction offline. It can be used as a general process dump utility that actors can embed in other scripts, as seen by Kimsuky’s inclusion of ProcDump in the BabyShark malware. The victim is then redirected to the official Chrome Web Store page to install a Chrome extension, which has the ability to steal cookies and site passwords and loads a JavaScript file, named jQuery.js, from a separate site (see figure 3).[51(link is external | ['T1204.002', 'T1555.003'] |
The impact of finding this implant on your network is severe and most likely indicates the presence of other footholds or compromised systems. This backdoor provides ample capability for the attacker to propagate and compromise other hosts and critical data using this as a very stealthy beachhead | ['T1556.004'] |
InvisiMole is capable of scanning enabled wireless networks on the compromised system. It records information such as the SSID and MAC address of the visible Wi-Fi access points | ['T1016'] |
Besides the stolen data, it sends the Windows product name and version, username, computer name, and domain name to the C&C server | ['T1082'] |
The implant has the capability of gathering data from the victim’s system. The following information will be gathered and sent to the command and control server | ['T1560.002'] |
The threat actors also collected the files “ntds.dit” and the “SYSTEM” registry hive. DHS observed the threat actors compress all of these files into archives named “SYSTEM.zip” and “comps.zip | ['T1560'] |
Malicious Word .doc file Besides the .pps file, the threat actor uses rich text files to deliver the malware. While other researchers have reported that these files exploit CVE-2012-0158, Symantec has also observed CVE-2015-1641 being exploited to drop Backdoor.Steladok | ['T1189', 'T1203'] |
Quickly after the initial compromise, the operator deploys a tool named "dog.exe. This malware is written in .NET and its purpose is to monitor hard drive paths and to exfiltrate the information via an email account or an FTP, depending on the configuration. The configuration file is named dconf.json | ['T1048'] |
Stealth Falcon demonstrates some familiarity with the patterns of behavior, interests, and activities of its targets, suggesting that the operators may have been working with other sources of information about their targets’ behaviors. In addition, Stealth Falcon displayed above-average operational security throughout the campaign. Stealth Falcon also shows familiarity with creating and maintaining a range of fictitious personas, and registering and managing a significant amount of attack and C2 infrastructure with concern for operational security | ['T1041'] |
The malware families used in this campaign consisted mainly of malicious documents featuring CARROTBAT downloaders with SYSCON payloads, but also included a new malware downloader Unit 42 has dubbed CARROTBALL | ['T1204.002'] |
Upon execution, the payload injects into iexplore.exe process and starts encrypting text files and documents of the victim machine | ['T1055'] |
GOLD CABIN uses malicious documents, often contained in password-protected archives, delivered through email to download and execute payloads. The second-stage payloads are most frequently Gozi ISFB (Ursnif) or IcedID (Bokbot), sometimes using intermediary malware like Valak. GOLD CABIN infrastructure relies on artificial appearing and frequently changing URLs created with a domain generation algorithm (DGA). The URLs host a PHP object that returns the malware as a DLL file.ToolsTaegis™ XDR Adversary Software Coverage Tool | ['T1568.002'] |
Using valid credentials, CARBON SPIDER moves laterally through victim environments using RDP and occasionally SSH. Occasionally, CARBON SPIDER has deployed the legitimate GoToAssist or TightVNC tools to provide redundant control of hosts | ['T1078'] |
The Gamaredon group uses a package that includes a custom Microsoft Outlook Visual Basic for Applications (VBA) project. Using Outlook macros to deliver malware is something we rarely see while investigating malicious campaigns | ['T1106', 'T1218.011', 'T1120', 'T1059.005'] |
Numerous other similarities are present in addition to system reconnaissance methods; the communication mechanism uses the same user agent string as Gold Dragon | ['T1071.001'] |
Proofpoint researchers frequently observe Silent Librarian’s phishing attempts originating from a university unrelated to their current target using a separate, unrelated university’s URL shortening service. This short URL links to a phishing landing page either directly or via one or more third-party sites that eventually lands the user on a clone of a login portal hosted on an actor-controlled server | ['T1588.002', 'T1598.003', 'T1608.005'] |
The functional payload is a DLL compiled on 2019-03-11 02:23:54, which has two functionalities depending if the binary has a command line argument -daemon or -worker passed to it. The daemon functionality handles the C2 communications portion of the Trojan, which is configured to communicate with 185.12.45[.]134 over HTTPS using the following URL | ['T1071.001'] |