Detectionhightest

HackTool - Covenant PowerShell Launcher

Detects suspicious command lines used in Covenant luanchers

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Florian Roth (Nextron Systems), Jonhnathan Ribeiro, oscd.communityCreated Thu Jun 04Updated Tue Feb 21c260b6db-48ba-4b4a-a76f-2f67644e99d2windows

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

detection:
    selection_1:
        CommandLine|contains|all:
            - '-Sta'
            - '-Nop'
            - '-Window'
            - 'Hidden'
        CommandLine|contains:
            - '-Command'
            - '-EncodedCommand'
    selection_2:
        CommandLine|contains:
            - 'sv o (New-Object IO.MemorySteam);sv d '
            - 'mshta file.hta'
            - 'GruntHTTP'
            - '-EncodedCommand cwB2ACAAbwAgA'
    condition: 1 of selection_*