Sigma detection rules, expert-reviewed

Windows Registry: New BgInfo UserFields value enabling custom WMI query execution

Alerts on new BgInfo UserFields registry entries that appear to configure a custom WMI query.

Windows Registry: New BgInfo UserFields value enabling custom VBScript execution

Detects registry changes under BgInfo UserFields that can be configured to run custom VBScript via BgInfo.exe.

Windows Registry Set: New BgInfo Database Path Value

Detects registry writes under BgInfo database configuration that set a new external database path.

Suspicious Child Process Creation from BgInfo.EXE on Windows

Alerts when BgInfo.exe spawns suspicious calc/cmd/cscript/mshta/powershell/wscript or runs from common AppData/Temp paths.

Windows Bash.exe Launched Without Script Execution Arguments

Alerts on bash.exe launched without script-execution flags, a potential stealthy way to run bash-driven payloads on Windows.

Suspicious aspnet_compiler.exe Execution from User or Temp Paths on Windows

Alerts when aspnet_compiler.exe runs with command lines indicating user-writable or temp/task paths.

Suspicious Child Process of aspnet_compiler.exe on Windows

Alerts when aspnet_compiler.exe spawns calc/notepad or executes from public/temp/Task-related paths on Windows.

Windows: Detect aspnet_compiler.exe Creating Temporary Assembly DLLs

Alerts when aspnet_compiler.exe writes a new DLL into the Temporary ASP.NET assembly tmp directories.

Windows DLL sideloading via unsigned mfdetours.dll loaded by image_load

Alerts on loading unsigned \mfdetours.dll, consistent with DLL sideloading abuse via mftrace.exe.

Windows Process Creation: Execution of Renamed gpg.exe or gpg2.exe

Alerts on Windows executions of renamed gpg.exe/gpg2.exe using process creation telemetry.

Windows Process Creation: Gpg4win File Encryption via gpg.exe or gpg2.exe

Flags Gpg4win (gpg.exe/gpg2.exe) executions using passphrase-based encryption on Windows.

Windows File Decryption via Gpg4win (gpg.exe/gpg2.exe with passphrase prompt)

Identifies Windows Gpg4win (gpg.exe/gpg2.exe) decryption commands that include a passphrase keyword.

Windows Provisioning Registry Key Abuse Leading to Indirect Execution via Provlaunch.exe

Flags Windows command lines referencing the provisioning commands registry path commonly abused for Provlaunch.exe-based indirect execution.

Windows: Alert on Suspicious Child Processes Spawned by provlaunch.exe

Detects provlaunch.exe launching suspicious child executables and processes from common temp/task paths on Windows.

Windows Named Pipe Creation: Default RemCom Pipe Name

Alerts on creation of named pipes with names containing "\RemCom" on Windows.