Sigma detection rules, expert-reviewed

Windows WMI Shadow Copy Deletion via PowerShell

Identifies PowerShell commands that use WMI Win32_ShadowCopy to delete or remove Volume Shadow Copies.

Windows Service Control Manager Events: Suspicious Service Install Paths used by Cobalt Strike

Alerts on Windows 7045 service installs with ImagePath patterns consistent with Cobalt Strike-style PowerShell and execution.

Windows Security 4697 Alerts for Service Installations Using Cobalt Strike Beacon Payloads

Flags Windows Event 4697 service installs whose service command strings match hidden/encoded PowerShell payload patterns.

Windows Process Creation: PsExec/PAExec Flags Indicating SYSTEM Execution

Flags indicating PsExec/PAExec-style execution as LOCAL SYSTEM using cmd/powershell/pwsh in process command lines.

PowerShell Script Block Logging: PowerView cmdlet names match

Alerts when PowerShell ScriptBlockText includes PowerView/PowerSploit reconnaissance cmdlet names tied to domain and access discovery.

PowerShell Defender Exclusion via Set/Add-MpPreference Command-Line Flags (Windows)

Detects PowerShell commands that add or set Microsoft Defender exclusions using Add/Set-MpPreference parameters.

Windows PowerShell Get-Process or aliases targeting LSASS (lsas)

Alerts on PowerShell Get-Process/alias commands referencing LSASS in Windows process creation events.

Windows PowerShell: Get-Process querying lsass within a ScriptBlock

Alerts when PowerShell ScriptBlock text runs Get-Process against lsass, a common credential-access precursor.

PowerShell ScriptBlock Certificate Export via Export-PfxCertificate or Export-Certificate

Detects PowerShell script blocks invoking certificate export cmdlets, which may be abused to steal sensitive certificate material.

Windows Process Creation: Exchange PowerShell Snap-in Loading via Add-PSSnapin

Flags PowerShell executions that Add-PSSnapin Exchange snap-ins, consistent with Exchange mailbox/config data collection.

Windows PowerShell TcpClient reverse-shell connection attempt via Net.Sockets

Alerts on PowerShell processes launching with .NET TcpClient stream/write patterns consistent with reverse TCP connectivity.

Windows PowerShell Command Lines with WMI Process Creation and rundll32 Invocation

Flags Windows command lines where PowerShell/WMI is used to spawn rundll32 from c:\windows.

Windows: Abused Debug Privilege via Command-Line Route/Add Spawned by System Parents

Flags PowerShell/cmd spawned by system processes with command lines containing both 'route' and 'ADD'.

Windows PowerShell Process Creation: COMPRESS OBFUSCATION with ASCII Encoding and DeflateStream

Flags PowerShell process creation command lines that use ASCII encoding plus compression/stream-reading patterns associated with obfuscation.

PowerShell ScriptBlock Logging: Obfuscated RUNDLL Launcher using rundll32.exe and shell32.dll

Identifies PowerShell script content invoking rundll32.exe/shell32.dll via shellexec_rundll and referencing PowerShell.