Sigma detection rules, expert-reviewed

Windows Registry Explorer Run Key Persistence Pointing to Suspicious Paths

Alerts on writes to the Explorer Run policy registry key with details pointing to suspicious filesystem paths.

Windows Registry Events: CMSTP Execution via cmmgr32.exe TargetObject

Flags registry events referencing \cmmgr32.exe, consistent with CMSTP-related execution behavior on Windows.

Windows CMSTP Process Spawning Child Process

Alerts on child processes spawned by Windows cmstp.exe, a common signal for CMSTP abuse.

Windows Process Access to cmlua.dll by CMSTP Connection Manager Profile Installer

Alerts on Windows process access events whose call trace includes cmlua.dll, indicating potential CMSTP-related execution.

Windows Process Creation: svchost.exe Spawns mshta.exe (LethalHTA)

Alerts on Windows instances where svchost.exe spawns mshta.exe, indicating potential LethalHTA execution.

Windows Registry Persistence via Image File Execution Options GlobalFlag and SilentProcessExit

Flags registry changes to IFEO GlobalFlag and SilentProcessExit keys that can enable stealthy persistence or process redirection.

Windows File Events: Known Offensive PowerShell Script File Creation

Alerts on creation of known offensive PowerShell/PowerShell module filenames on Windows.

Windows Process Creation: Suspicious Child Programs Spawned by mshta, PowerShell, wscript, rundll32

Alerts when mshta/PowerShell and similar script hosts spawn tasks, download/transfer, or utility tools on Windows.

Windows: Suspicious Process Spawning from Microsoft Office Applications

Alerts when Office apps spawn common execution tools or scripts from typical attacker staging paths on Windows.

Windows Proxy Activity Using Microsoft-WebDAV-MiniRedir GET User-Agent

Alerts on proxy HTTP GET requests using the Microsoft-WebDAV-MiniRedir/ User-Agent prefix associated with file download behavior.

Windows Ping Hex IP Usage via Command Line

Flags ping.exe executions that pass a hex-encoded IPv4 address (0x????????) in the command line on Windows.

Windows Service Control Manager flags smbexec.py-style service installation via suspicious ImagePath

Flags suspicious Windows service installations matching a specific service name and BAT/delete command patterns in Event 7045.

Windows Security: Registry NetNTLM Downgrade Configuration Changes

Alerts on Windows registry changes that weaken NetNTLM/NTLM security settings via LSA compatibility and restriction values.

Windows Process Creation: taskmgr.exe launched in LOCAL_SYSTEM context

Flags taskmgr.exe process creation when initiated under a LOCAL_SYSTEM-equivalent user context string.

Windows Suspicious RDP Session Redirect via tscon.exe /dest:rdp-tcp#

Alerts on Windows process executions using tscon.exe-style RDP redirection to an "rdp-tcp#" destination.