Query: rule covering Detects the use of getsystem Meterpreter/Cobalt Strike command by detecting a specific service installation
Matching passage: Sigma rule: Detects the use of getsystem Meterpreter/Cobalt Strike command by detecting a specific service installation. Logsource: windows / security. Rule: title: Meterpreter or Cobalt Strike Getsystem Service Installation - Security id: ecbc5e16-58e0-4521-9c60-eb9a7ea4ad34 related: - id: 843544a7-56e0-4dcc-a44f-5cc266dd97d6 type: derived status: test description: Detects the use of getsystem Meterpreter/Cobalt Strike command by detecting a specific service installation references: - https://speakerdeck.com/heirhabarov/hunting-for-privilege-escalation-in-windows-environment - https://blog.cobaltstrike.com/2014/04/02/what-happens-when-i-type-getsystem/ author: Teymur Kheirkhabarov, Ecco, Florian Roth (Nextron Systems) date: 2019-10-26 modified: 2023-11-15 tags: - attack.privilege-escalation - attack.stealth - attack.t1134.001 - attack.t1134.002 logsource: product: windows service: security definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697 detection: selection_eid: EventID: 4697 selection_cli_cmd: ServiceFileName|contains|all: - /c - echo - \pipe\ ServiceFileName|contains: - cmd - '%COMSPEC%' selection_cli_rundll: ServiceFileName|contains|all: - rundll32 - .dll,a - '/p:' selection_cli_share: ServiceFileName|startswith: \\\\127.0.0.1\\ADMIN$\ condition: selection_eid and 1 of selection_cli_* falsepositives: - Unlikely level: high
Near-miss passage: Sigma rule: Detects attempts to add, modify, or delete Windows Credential Guard related registry keys or values via command line too. Logsource: windows / process_creation. Rule: title: Windows Credential Guard Registry Tampering Via CommandLine id: c17d47b7-dcd6-4109-87eb-d1817bd4cbc9 related: - id: 73921b9c-cafd-4446-b0c6-fdb0ace42bc0 type: similar - id: d645ef86-2396-48a1-a2b6-b629ca3f57ff type: similar status: experimental description: 'Detects attempts to add, modify, or delete Windows Credential Guard related registry keys or values via command line tools such as Reg.exe or PowerShell. Credential Guard uses virtualization-based security to isolate secrets so that only privileged system software can access them. Adversaries may disable Credential Guard to gain access to sensitive credentials stored in the system, such as NTLM hashes and Kerberos tickets, which can be used for lateral movement and privilege escalation. The rule matches suspicious command lines that target DeviceGuard or LSA registry paths and manipulate keys like EnableVirtualizationBasedSecurity, RequirePlatformSecurityFeatures, or LsaCfgFlags. Such activity may indicate an attempt to disable or tamper with Credential Guard, potentially exposing sensitive credentials for misuse. ' references: - https://woshub.com/disable-credential-guard-windows/ - https://learn.microsoft.com/en-us/windows/client-management/mdm/policy-csp-deviceguard author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-12-26 tags: - attack.defense-impairment - attack.t1685 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \powershell.exe - \pwsh.exe - \reg.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll - reg.exe selection_cli: CommandLine|contains: - 'add ' - 'New-ItemProperty ' - 'Set-ItemProperty ' - 'si ' - 'delete ' - 'del ' - 'Remove-ItemProperty ' - 'rp ' selection_key_base: CommandLine|contains: - \Control\DeviceGuard - \Control\LSA - Software\Policies\Microsoft\Windows\DeviceGuard selection_key_specific: CommandLine|contains: - EnableVirtualizationBasedSecurity - RequirePlatformSecurityFeatures - LsaCfgFlags condition: all of selection_* falsepositives: - Unlikely level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_credential_guard_registry_tampering/info.yml