Query: Sigma YAML for windows / ps_script
Matching passage: Sigma rule: Detects usage of the "Add-WindowsCapability" cmdlet to add Windows capabilities. Notable capabilities could be "OpenSSH". Logsource: windows / ps_script. Rule: title: Add Windows Capability Via PowerShell Script id: 155c7fd5-47b4-49b2-bbeb-eb4fab335429 related: - id: b36d01a3-ddaf-4804-be18-18a6247adfcd type: similar status: test description: Detects usage of the "Add-WindowsCapability" cmdlet to add Windows capabilities. Notable capabilities could be "OpenSSH" and others. references: - https://learn.microsoft.com/en-us/windows-server/administration/openssh/openssh_install_firstuse?tabs=powershell - https://www.virustotal.com/gui/file/af1c82237b6e5a3a7cdbad82cc498d298c67845d92971bada450023d1335e267/content author: Nasreddine Bencherchali (Nextron Systems) date: 2023-01-22 modified: 2023-05-09 tags: - attack.execution logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection_cmdlet: ScriptBlockText|contains: 'Add-WindowsCapability ' selection_capa: ScriptBlockText|contains: -Name OpenSSH. condition: all of selection_* falsepositives: - Legitimate usage of the capabilities by administrators or users. Add additional filters accordingly. level: medium
Near-miss passage: Sigma rule: Detects the execution of known offensive powershell scripts used for exploitation or reconnaissance. Logsource: windows / ps_module. Rule: title: Malicious PowerShell Scripts - PoshModule id: 41025fd7-0466-4650-a813-574aaacbe7f4 related: - id: f331aa1f-8c53-4fc3-b083-cc159bc971cb type: similar - id: bf7286e7-c0be-460b-a7e8-5b2e07ecc2f2 type: obsolete status: test description: Detects the execution of known offensive powershell scripts used for exploitation or reconnaissance references: - https://github.com/PowerShellMafia/PowerSploit - https://github.com/NetSPI/PowerUpSQL - https://github.com/CsEnox/EventViewer-UACBypass - https://web.archive.org/web/20210511204621/https://github.com/AlsidOfficial/WSUSpendu - https://github.com/nettitude/Invoke-PowerThIEf - https://github.com/S3cur3Th1sSh1t/WinPwn - https://github.com/S3cur3Th1sSh1t/PowerSharpPack/tree/master/PowerSharpBinaries - https://github.com/BC-SECURITY/Invoke-ZeroLogon/blob/111d17c7fec486d9bb23387e2e828b09a26075e4/Invoke-ZeroLogon.ps1 - https://github.com/xorrior/RandomPS-Scripts/blob/848c919bfce4e2d67b626cbcf4404341cfe3d3b6/Get-DXWebcamVideo.ps1 - https://github.com/rvrsh3ll/Misc-Powershell-Scripts/blob/6f23bb41f9675d7e2d32bacccff75e931ae00554/OfficeMemScraper.ps1 - https://github.com/dafthack/DomainPasswordSpray/blob/b13d64a5834694aa73fd2aea9911a83027c465a7/DomainPasswordSpray.ps1 - https://unit42.paloaltonetworks.com/threat-assessment-black-basta-ransomware/ - https://research.nccgroup.com/2022/06/06/shining-the-light-on-black-basta/ - https://github.com/HarmJ0y/DAMP - https://github.com/samratashok/nishang - https://github.com/DarkCoderSc/PowerRunAsSystem/ - https://github.com/besimorhino/powercat - https://github.com/sadshade/veeam-creds/blob/6010eaf31ba41011b58d6af3950cffbf6f5cea32/Veeam-Get-Creds.ps1 - https://github.com/The-Viper-One/Invoke-PowerDPAPI/ - https://github.com/Arno0x/DNSExfiltrator/ author: frack113, Nasreddine Bencherchali (Nextron Systems) date: 2023-01-23 modified: 2025-12-10 tags: - attack.execution - attack.t1059.001 logsource: product: windows category: ps_module definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b detection: selection_generic: ContextInfo|contains: - Add-ConstrainedDelegationBackdoor.ps1 - Add-Exfiltration.ps1 - Add-Persistence.ps1 - Add-RegBackdoor.ps1 - Add-RemoteRegBackdoor.ps1 - Add-ScrnSaveBackdoor.ps1 - BadSuccessor.ps1 - Check-VM.ps1 - ConvertTo-ROT13.ps1 - Copy-VSS.ps1 - Create-MultipleSessions.ps1 - DNS_TXT_Pwnage.ps1 - dnscat2.ps1 - Do-Exfiltration.ps1 - DomainPasswordSpray.ps1 - Download_Execute.ps1 - Download-Execute-PS.ps1 - Enabled-DuplicateToken.ps1 - Enable-DuplicateToken.ps1 -