SigmaHQ/rules/windows/sysmon/sysmon_shell_spawn_susp_program.yml

title: Windows Shell Spawning Suspicious Program
status: experimental
description: Detects a suspicious child process of a Windows shell
references:
    - https://mgreen27.github.io/posts/2018/04/02/DownloadCradle.html
author: Florian Roth
date: 2018/04/06
logsource:
    product: windows
    service: sysmon
detection:
    selection:
        EventID: 1
        ParentImage:
            - '*\mshta.exe'
            - '*\powershell.exe'
            - '*\cmd.exe'
            - '*\rundll32.exe'
            - '*\cscript.exe'
            - '*\wscript.exe'
            - '*\wmiprvse.exe'
        Image:
            - '*\schtasks.exe'
            - '*\nslookup.exe'
            - '*\certutil.exe'
            - '*\bitsadmin.exe'
            - '*\mshta.exe'
    condition: selection
fields:
    - CommandLine
    - ParentCommandLine
falsepositives:
    - Administrative scripts
level: high