Sigma detection rules, expert-reviewed

Windows: Potential Process Injection via Msra.exe Spawning Suspicious Child Processes

Flags Msra.exe spawning suspicious tools that may indicate process injection or post-exploitation activity on Windows.

Windows DNS Queries Containing ufile.io Domain

Alerts on Windows DNS lookups where the queried name contains ufile.io, indicating potential exfiltration-related activity.

Windows Process Execution: msdt.exe Launched with -cab Flag

Alerts when msdt.exe is started with the "-cab" argument, consistent with suspicious cabinet-based diagcab usage.

Windows PowerShell: Execution of TroubleshootingPack Cmdlets (msdt-related usage)

Flags PowerShell script blocks invoking TroubleshootingPack with unattended answer-file arguments.

Windows PowerShell Hotfix Enumeration via Win32_QuickFixEngineering

Detects PowerShell scripts enumerating installed hotfixes by querying Win32_QuickFixEngineering for HotFixID.

Windows wmic.exe Used to Start or Stop Services

Alerts on wmic.exe command lines invoking startservice or stopservice via service calls.

Windows WMIC Process Creation Recon for Unquoted Service Paths

Flags wmic.exe service queries requesting name/displayname/pathname/startmode to support unquoted service path reconnaissance.

Windows Hotfix Inventory Recon via wmic.exe qfe

Detects wmic.exe executions with "qfe" used to enumerate installed Windows hotfixes.

Windows CLI Enumeration of 3rd-Party Credential Registry Keys

Alerts when Windows processes use command-line queries to enumerate credential-containing third-party registry keys.

Windows Dsacls.EXE Password Spraying Check via /user and /passwd

Flags dsacls.exe executions that specify both /user: and /passwd:, consistent with password spraying attempts.

Windows: dsacls.exe used to grant potentially over-permissive access rights

Alerts on dsacls.exe commands using /G to grant wide or permissive ACL permissions.

PowerShell WMI Service Enumeration for Unquoted Service Path Recon

Flags PowerShell WMI queries for Win32_Service fields to enumerate potential unquoted service path issues.

Windows Registry: New W32Time TimeProvider DllName Values Set Under Services\W32Time\TimeProvider

Alerts on new or changed W32Time TimeProvider DllName registry values under Services\W32Time\TimeProvider.

Windows: Chromium-Based Browser Launched via Script Host with --load-extension

Flags Windows process creation where Chromium browsers are spawned with --load-extension= from common script/LOLBins parents.

Windows Chromium-Based Browser Launched With --load-extension Flag

Alerts when a Chromium-based browser starts with --load-extension= to load a custom extension.