Sigma detection rules, expert-reviewed

Windows Security 4697 Alerts for Service Installations Using Cobalt Strike Beacon Payloads

Flags Windows Event 4697 service installs whose service command strings match hidden/encoded PowerShell payload patterns.

Windows Named Pipe Creation Matching Cobalt Strike Default Pipe Prefixes

Flags Windows named pipe creation where PipeName matches known Cobalt Strike default pipe prefixes.

Windows Process Creation: PsExec/PAExec Flags Indicating SYSTEM Execution

Flags indicating PsExec/PAExec-style execution as LOCAL SYSTEM using cmd/powershell/pwsh in process command lines.

Windows Process Creation: Renamed PAExec Application Execution

Flags Windows executions of a renamed PAExec binary using process metadata and known IMPHASH values.

Windows: WinRM Service Process Spawning Command-Line and Scripting Utilities

Flags suspicious child shells and admin utilities spawned by the WinRM host process (wsmprovhost.exe) on Windows.

PowerShell Script Block Logging: PowerView cmdlet names match

Alerts when PowerShell ScriptBlockText includes PowerView/PowerSploit reconnaissance cmdlet names tied to domain and access discovery.

Windows Process Command Lines Indicating ngrok.exe Tunnel Setup

Detects Windows executions of ngrok.exe with TCP/HTTP tunneling and authtoken/start-all YAML configuration patterns.

Windows: Detect Rclone command execution with exfiltration-oriented flags

Identifies likely rclone.exe exfiltration activity on Windows by matching command-line flags and rclone executable characteristics.

Windows Service Creation Indicators for Moriya Rootkit (ZzNetSvc via Service Control Manager)

Alerts on creation of the "ZzNetSvc" service by Service Control Manager (Event ID 7045) on Windows.

Windows whoami.exe Privilege Enumeration Using /priv Flag

Alerts on whoami.exe runs with /priv or -priv to enumerate current user privileges.

Windows Registry: lsass.exe Creating Local Hidden User Account Entries

Alerts when lsass.exe writes hidden local user name entries to the SAM\...\Users\Names\ registry path.

Windows Security: Hidden Local User Account Creation (Event ID 4720)

Alerts on Windows 4720 local user creation for hidden accounts (username ending with '$'), excluding 'HomeGroupUser$'.

Windows Process Access to svchost.exe with Credential Dumping Access Rights

Alerts on attempts to read svchost.exe memory consistent with credential dumping, excluding known benign callers.

PowerShell Defender Exclusion via Set/Add-MpPreference Command-Line Flags (Windows)

Detects PowerShell commands that add or set Microsoft Defender exclusions using Add/Set-MpPreference parameters.

Windows PowerShell Get-Process or aliases targeting LSASS (lsas)

Alerts on PowerShell Get-Process/alias commands referencing LSASS in Windows process creation events.