Every published rule
Every rule shows the reporting behind it, the telemetry it needs and where it falls short — before it costs you anything.
528 rules
Suspicious Child Process Spawning by PowerShell on Windows
Alerts when PowerShell spawns potentially suspicious child binaries (e.g., certutil, mshta, wmic, rundll32), with exclusions for known benign patterns.
sigmamedium2022-04-26Windows Process Creation: Suspicious PowerShell Child of Tomcat prunsrv.exe (CVE-2022-22954 Attempt)
Alerts when prunsrv.exe spawns PowerShell or cmd.exe running PowerShell, consistent with potential Workspace ONE Access RCE attempts.
sigmamedium2022-04-25PowerShell WMI Win32_Product MSI Installation via Invoke-CimMethod
Flags PowerShell using WMI Win32_Product via Invoke-CimMethod to invoke an MSI install.
sigmaWindowsmedium2022-04-24Windows: File Creation of Get-Variable.exe in PowerShell WindowsApps Path
Alerts on creation of Get-Variable.exe in Local\Microsoft\WindowsApps, a potential cmdlet-path hijack.
sigmaWindowshigh2022-04-23Windows: Emotet .LNK Loader Execution via cmd.exe or PowerShell
Alerts on cmd/powershell-launched commands referencing findstr, a .vbs script, and a .lnk file—indicative of shortcut-triggered loader activity.
sigmahigh2022-04-22Windows Process Execution via 7zFM.exe Indicative of CVE-2022-29072 Exploitation
Alerts when 7zFM.exe spawns cmd.exe or PowerShell with command-line patterns consistent with CVE-2022-29072 exploitation attempts.
sigmahigh2022-04-17Windows Process Creation: msiexec.exe Embedding Spawned by PowerShell/cmd/pwsh
Alerts when cmd/powershell launches msiexec.exe with -Embedding, a proxy execution pattern.
sigmaWindowsmedium2022-04-16Windows schtasks.exe scheduled task creation from suspicious folders
Alerts on schtasks.exe /create using PowerShell/cmd and suspicious folder paths like ProgramData.
sigmaWindowshigh2022-04-15Windows File Creation: PowerShell webAdministration Module Path Used in CVE-2022-24527 LPE
Flags Windows file events creating webAdministration.psm1 under PowerShell modules, consistent with CVE-2022-24527 LPE behavior.
sigmahigh2022-04-13PowerShell Hyper-V Cmdlets Execution via Script Blocks (New-VM, Set-VMFirmware, Start-VM)
Alerts when PowerShell script blocks use Hyper-V VM creation or start cmdlets (New-VM, Set-VMFirmware, Start-VM).
sigmaWindowsmedium2022-04-09Windows Task Scheduler persistence using svchost-launched PowerShell with hidden/Bypass flags
Alerts on svchost.exe Schedule tasks spawning PowerShell with hidden window and execution policy bypass flags.
sigmaWindowshigh2022-04-08Windows PowerShell execution from C:\Users\Public
Flags PowerShell command lines that reference C:\Users\Public, indicating likely script execution from a common public staging area.
sigmaWindowshigh2022-04-06Windows PowerShell User Discovery via Current Username APIs
Alerts on PowerShell script blocks that retrieve the current username or user identity using common environment/.NET calls.
sigmaWindowslow2022-04-04Windows Registry Key Changes Disabling PowerShell Logging for Current User
Detects registry changes that disable PowerShell module/script logging and transcription by setting logging keys to DWORD 0.
sigmaWindowshigh2022-04-02Windows PowerShell: Suspicious GetTypeFromCLSID and ShellExecute usage
Flags PowerShell script blocks that use GetTypeFromCLSID followed by ShellExecute.
sigmaWindowsmedium2022-04-02Windows PowerShell IEX Invocation Patterns in Process Creation Command Lines
Alerts on suspicious PowerShell command lines that pipe or otherwise invoke IEX and may include Base64 decoding.
sigmaWindowshigh2022-03-24Windows PowerShell Download and Execution Cradles
Flags PowerShell commands that download remote content and immediately execute it using IEX/Invoke-Expression.
sigmaWindowshigh2022-03-24Windows LSA PPL Protection Setting Modification via reg.exe or PowerShell Command Line
Flags Windows command lines that alter LSA PPL-related Control\Lsa registry settings using reg.exe/PowerShell property changes.
sigmaWindowsmedium2022-03-22Windows Scheduled Task Backdoor Execution via cmd.exe or PowerShell (System EventID /create /delete)
Flags cmd.exe/powershell.exe command lines that create a System/EventID-based scheduled task to run a payload.
sigmahigh2022-03-21Windows Service Installation with PowerShell Download and Hidden Execution
Alerts on Windows service creation (7045) with ImagePath patterns indicating hidden/staged command execution.
sigmaWindowshigh2022-03-18