Sigma detection rules, expert-reviewed

Linux: Alert on bpf_probe_write_user BPF helper warning strings

Alerts on Linux log messages referencing the bpf_probe_write_user helper warning string, indicating potential suspicious eBPF usage.

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.

Windows PsExec Remote Execution Creates PSEXEC-*.key File Artefact

Alerts on creation of PsExec key files in C:\Windows\PSEXEC-*.key, indicating remote execution activity.

Windows Process Creation: svchost DHCPServer RCE Exploitation Attempt

Alerts on svchost.exe running as Network Service with -k DHCPServer, suggesting a potential pre-auth Windows RCE attempt.

Windows PowerShell module commandlet names matching known exploitation and post-exploitation tooling

Alerts on PowerShell module payloads containing commandlet/function names from known malicious exploitation and post-exploitation frameworks.