Sigma detection rules, expert-reviewed

Windows Visual Basic vbc.exe Compiles to .obj via cvtres.exe Resource Converter

Alerts when vbc.exe spawns cvtres.exe during Windows VB command-line compilation activity.

Windows: Process CallTrace using EditionUpgradeManager COM interface DLL

Alerts on process access events with call traces referencing editionupgrademanagerobj.dll via the EditionUpgradeManager COM interface.

Windows regedit.exe exports a registry key into an alternate data stream

Flags regedit.exe executions where the process image ends with '\regedit.exe', consistent with exporting Registry data to an alternate data stream.

Linux Process Creation: File Deletion via rm, shred, or unlink

Alerts on Linux process executions of rm, shred, or unlink used to delete files.

Linux process attempts to delete log files using rm, rmdir, shred, or unlink

Flags Linux attempts to remove or destroy log files via rm/rmdir/shred/unlink when /var/log or mail spool paths are referenced.

Windows Diskshadow Script Mode Execution via /s Flag

Alerts when Diskshadow is executed in script mode using the /s flag.

PowerShell Service Persistence via Registry ImagePath on Windows

Flags Windows registry service ImagePath entries that reference PowerShell (powershell/pwsh).

Windows: Winrm.vbs AWL bypass using attacker WsmPty.xsl/WsmTxt.xsl

Detects WinRM vbs execution with suspicious XSL formatting arguments, especially when the binary is outside System32/SysWOW64.

Windows: VBoxDrvInst.exe Invoked with driver/executeinf Parameters

Flags VBoxDrvInst.exe launched with parameters indicative of INF processing (driver/executeinf).

Windows: Time Travel Debugging Utility (tttracer.exe) Process Execution

Alerts when tttracer.exe is the parent process of a spawned process on Windows.

PowerShell Script Block WinAPI Calls Indicative of Injection or Token Abuse (Windows)

Detects PowerShell ScriptBlocks containing WinAPI function-name combinations consistent with injection and token manipulation.

Windows UAC Bypass via dism.exe Loading Fake dismcore.dll

Alerts when dism.exe loads a dismcore.dll that is not the expected System32 Dism DLL.

Windows Time Travel Debugging DLL Loads (ttdrecord/ttdwriter/ttdloader)

Flags Windows image loads of Time Travel Debugging Utility DLLs (tdrecord/tdwriter/tdloader), often abused for stealthy credential dumping.

Windows file events: Winrm.vbs payload XSL execution artifacts WsmPty.xsl/WsmTxt.xsl outside system folders

Alert on WsmPty.xsl/WsmTxt.xsl files written outside System32 and SysWOW64, consistent with WinRM VBScript misuse.

Windows PowerShell Remote Thread Into lsass.exe Suggesting Credential Dumping

Alerts when PowerShell creates a remote thread into lsass.exe, indicating possible credential dumping on Windows.