Sigma detection rules, expert-reviewed

Windows PowerShell Base64-Encoded WMI Class Invocation

Flags PowerShell command lines containing Base64 fragments indicative of WMI class usage (e.g., ShadowCopy, ScheduledJob) on Windows.

Windows Registry: Monitor PendingFileRenameOperations changes from suspicious images

Alerts on registry tampering of PendingFileRenameOperations by processes running from suspicious image paths.

Windows WMIC System Information Discovery via WMIC.EXE Recon

Flags WMIC.EXE executions running system info queries for OS and disk details.

Windows: Suspicious Child Process Spawned by VsCode code.exe

Alerts when code.exe spawns suspicious binaries, script hosts, or command-line activity that matches common execution patterns.

Windows WSL Process Spawning Uncommon Child Executables

Alerts when wsl.exe or wslhost.exe spawns suspicious child binaries from common temp/public/user directories.

Windows PowerShell Module Execution Matches Known Offensive PoshModule Script Names

Alerts on Windows PowerShell module executions where the script context matches known offensive PowerShell script/module names.

PowerShell on Windows adding Windows capabilities via Add-WindowsCapability

Alerts when PowerShell adds an OpenSSH-related Windows capability using Add-WindowsCapability.

Windows PowerShell imports Microsoft.ActiveDirectory.Management.dll via Import-Module (AD enumeration)

Alerts when PowerShell imports Microsoft.ActiveDirectory.Management.dll using Import-Module, indicating potential AD enumeration.

Windows IIS appcmd Creating GlobalRules URL Rewrite Configuration

Flags appcmd.exe commands that modify IIS global URL rewrite globalRules and commit the configuration.

Windows Capability Added via PowerShell Add-WindowsCapability (OpenSSH)

Flags PowerShell commands that add Windows capabilities, specifically OpenSSH, via Add-WindowsCapability in logged script blocks.

Windows PowerShell Active Directory Module Import for Enumeration

Detects PowerShell importing Microsoft.ActiveDirectory.Management.dll with Import-Module, often seen during AD enumeration.

Windows PowerShell AD Module DLL Import for Active Directory Enumeration

Flags PowerShell importing Microsoft.ActiveDirectory.Management.dll via Import-Module, a common step in AD discovery and enumeration.

Windows: Detect Aruba Netsvc DLL Search Order Hijacking via arubanetsvc.exe Loaded DLLs

Flags arubanetsvc.exe loading targeted DLLs outside standard system paths, suggesting possible DLL search order hijacking.

Windows: OneNote .one/.onepkg File Creation in Suspicious Locations

Flags creation of OneNote attachment files (.one/.onepkg) in temp/public-style paths on Windows.

Windows rundll32 Launching DLL From Alternate Data Stream (ADS) Paths

Detects rundll32 executions that reference DLLs stored in Alternate Data Streams via ADS-style paths.