Sigma detection rules, expert-reviewed

PowerShell Module: Obfuscated STDIN Execution via cmd /c or cmd /r

Alerts when an obfuscated cmd->PowerShell payload uses stdin-style input and noexit/no-execution patterns.

Windows Service Control Manager: Obfuscated Environment Variable PowerShell via cmd /c set -f

Alerts on Service Control Manager event 7045 where a service ImagePath uses cmd /c|/r with "set" and -f formatting.

Windows System Service Control Manager spawning cmd with PowerShell and stdin input obfuscation

Flags SCM-created services whose ImagePath runs cmd to invoke PowerShell using stdin/input and -NoExit patterns.

Windows Security 4697: cmd.exe Launching Obfuscated PowerShell via Environment Variable Expansion

Alerts on EID 4697 service installation command lines containing obfuscated cmd.exe SET patterns used to execute PowerShell via environment variables.

Windows Security Event 4697 PowerShell Launch via cmd/stdin Obfuscation

Alerts on service creation events that run PowerShell through cmd with stdin-style obfuscation markers.

Windows msiexec.exe Installer Process Spawning cmd.exe or PowerShell

Flags installer-initiated spawning of cmd.exe or PowerShell from Windows\Installer temporary msi-related processes.

Windows PowerShell via sqltoolsps.exe (sqltoolsps.exe child process exclusion)

Flags suspicious sqltoolsps.exe executions that may launch PowerShell, excluding cases where smss.exe spawned the utility.

Windows Process Command Line: Detect VAR++ LAUNCHER Obfuscated PowerShell

Flags Windows command lines showing VAR++ launcher-style obfuscated PowerShell execution through Invoke-Expression patterns.

Windows Process Creation: Obfuscated Cmd Uses clip.exe to Execute PowerShell

Alerts when cmd.exe uses obfuscated Clip.exe/clipboard calls to launch PowerShell.

Detect VAR++ LAUNCHER-Style Obfuscated PowerShell Command Block

Detects VAR++ LAUNCHER-like PowerShell obfuscation patterns in ScriptBlockText.

PowerShell Script Block Obfuscation via cmd/clipboard and clip.exe execution

Identifies obfuscated PowerShell script blocks launching clip.exe and chaining clipboard-related execution.

PowerShell Module: VAR++ LAUNCHER Obfuscation in Obfuscated Command Payload

Identifies obfuscated PowerShell module payloads matching a VAR++ LAUNCHER-style invocation pattern.

PowerShell Module: Obfuscated Clip.exe launcher using cmd with clipboard download payload

Detects obfuscated PowerShell module commands that run cmd with clip.exe/clipboard payload formatting.

Windows System: Detects Service Control Manager spawning obfuscated PowerShell via VAR++ LAUNCHER

Flags newly created Windows services whose ImagePath contains cmd chaining and obfuscated PowerShell launcher indicators.

Windows System Service Control: Obfuscated cmd Launching clip.exe for PowerShell

Flags service creation (Event 7045) with obfuscated cmd ImagePath using clip.exe/clipboard PowerShell execution patterns.