SigmaHQ/rules/windows/process_creation/win_susp_covenant.yml

title: Covenant Launcher Indicators
id: c260b6db-48ba-4b4a-a76f-2f67644e99d2
description: Detects suspicious command lines used in Covenant luanchers
status: experimental
references:
    - https://posts.specterops.io/covenant-v0-5-eee0507b85ba
author: Florian Roth
date: 2020/06/04
tags:
    - attack.execution
    - attack.defense_evasion
    - attack.t1059.001
    - attack.t1564.003
    - attack.t1086        # an old one
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains:
            - ' -Sta -Nop -Window Hidden -Command '
            - ' -Sta -Nop -Window Hidden -EncodedCommand '
            - 'sv o (New-Object IO.MemorySteam);sv d '
            - 'mshta file.hta'
            - 'GruntHTTP'
            - '-EncodedCommand cwB2ACAAbwAgA'
    condition: selection
level: high