Query: detect Detects tampering of AMSI (Anti-Malware Scan Interface) related registry values via command line tools such as reg.exe o in logs
Matching passage: Sigma rule: Detects tampering of AMSI (Anti-Malware Scan Interface) related registry values via command line tools such as reg.exe o. Logsource: windows / process_creation. Rule: title: Windows AMSI Related Registry Tampering Via CommandLine id: 7dbbcac2-57a0-45ac-b306-ff30a8bd2981 related: - id: aa37cbb0-da36-42cb-a90f-fdf216fc7467 type: similar status: experimental description: 'Detects tampering of AMSI (Anti-Malware Scan Interface) related registry values via command line tools such as reg.exe or PowerShell. AMSI provides a generic interface for applications and services to integrate with antimalware products. Adversaries may disable AMSI to evade detection of malicious scripts and code execution. ' references: - https://github.com/arttoolkit/arttoolkit.github.io/blob/16d6230d009e58fd6f773f5317fd4d14c1f26004/_wadcoms/AMSI-Bypass-Jscript_amsienable.md - https://mostafayahiax.medium.com/hunting-for-amsi-bypassing-methods-9886dda0bf9d - https://www.mdsec.co.uk/2019/02/macros-and-more-with-sharpshooter-v2-0/ author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-12-25 tags: - attack.defense-impairment - attack.t1685 logsource: category: process_creation product: windows detection: selection_key: CommandLine|contains|all: - \Software\Microsoft\Windows Script\Settings - AmsiEnable selection_reg_img: - Image|endswith: \reg.exe - OriginalFileName: reg.exe selection_reg_cmd: CommandLine|contains: add selection_powershell_img: - Image|endswith: - \powershell.exe - \pwsh.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll selection_powershell_cmd: CommandLine|contains: - Set-ItemProperty - New-ItemProperty - 'sp ' condition: selection_key and (all of selection_powershell_* or all of selection_reg_*) falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_amsi_registry_tampering/info.yml simulation: - type: atomic-red-team name: AMSI Bypass - Create AMSIEnable Reg Key technique: T1562.001 atomic_guid: 728eca7b-0444-4f6f-ac36-437e3d751dc0
Near-miss passage: Sigma rule: Detects an attempt to terminate a process via "wmic" with the "call terminate" flag. Adversaries may use wmic to termina. Logsource: windows / process_creation. Rule: title: Application Termination Attempt via Wmic.EXE id: 49d9671b-0a0a-4c09-8280-d215bfd30662 related: - id: 847d5ff3-8a31-4737-a970-aeae8fe21765 type: derived status: test description: 'Detects an attempt to terminate a process via "wmic" with the "call terminate" flag. Adversaries may use wmic to terminate security products or other applications on the compromised host. This event is triggered on on attempt and process creation can be either successful or unsuccessful. ' references: - https://cyble.com/blog/lockfile-ransomware-using-proxyshell-attack-to-deploy-ransomware/ - https://www.bitdefender.com/files/News/CaseStudies/study/377/Bitdefender-Whitepaper-WMI-creat4871-en-EN-GenericUse.pdf author: Nasreddine Bencherchali (Nextron Systems) date: 2023-09-11 tags: - attack.execution - attack.t1047 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \WMIC.exe - OriginalFileName: wmic.exe selection_cli: CommandLine|contains|all: - call - terminate condition: all of selection_* falsepositives: - Unknown level: medium regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_wmic_terminate_application/info.yml