title: Trickbot Malware Activity
id: 58bf96d9-ff5f-44bd-8dcc-1c4f79bf3a27
status: experimental
description: Detects Trickbot malware process tree pattern in which rundll32.exe is parent of wermgr.exe 
references:
    - https://twitter.com/swisscom_csirt/status/1331634525722521602?s=20
    - https://app.any.run/tasks/f74c5157-8508-4ac6-9805-d63fe7b0d399/
author: Florian Roth
date: 2020/11/26
tags:
    - attack.execution
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\wermgr.exe'
        ParentImage|endswith:
            - '\rundll32.exe'
        ParentCommandLine|contains:
            - 'DllRegisterServer'
    condition: selection
falsepositives:
    - Unknown
level: critical