SigmaHQ/rules/windows/process_creation/win_apt_mustangpanda.yml

title: Mustang Panda Dropper
id: 2d87d610-d760-45ee-a7e6-7a6f2a65de00
status: experimental
description: Detects specific process parameters as used by Mustang Panda droppers
author: Florian Roth, oscd.community
date: 2019/10/30
references:
    - https://app.any.run/tasks/7ca5661d-a67b-43ec-98c1-dd7a8103c256/
    - https://app.any.run/tasks/b12cccf3-1c22-4e28-9d3e-c7a6062f3914/
    - https://www.anomali.com/blog/china-based-apt-mustang-panda-targets-minority-groups-public-and-private-sector-organizations
logsource:
    category: process_creation
    product: windows
detection:
    selection1:
        - CommandLine|contains:
            - 'Temp\wtask.exe /create'
            - '%windir:~-3,1%%PUBLIC:~-9,1%'
            - '/tn "Security Script '
            - '%windir:~-1,1%'
        - CommandLine|contains|all:
            - '/E:vbscript'
            - 'C:\Users\'
            - '.txt'
            - '/F'
    selection2:
        Image|endswith: 'Temp\winwsh.exe'
    condition: 1 of them
fields:
    - CommandLine
    - ParentCommandLine
falsepositives:
    - Unlikely
level: high