Potential Goofy Guineapig Backdoor Activity

title: Potential Goofy Guineapig Backdoor Activity
id: 477a5ed3-a374-4282-9f3b-ed94e159a108
status: test
description: Detects a specific broken command that was used by Goofy-Guineapig as described by the NCSC report.
references:
    - https://www.ncsc.gov.uk/static-assets/documents/malware-analysis-reports/goofy-guineapig/NCSC-MAR-Goofy-Guineapig.pdf
author: X__Junior (Nextron Systems)
date: 2023-05-14
tags:
    - attack.execution
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains: 'choice /t %d /d y /n >nul'
    condition: selection
falsepositives:
    - Unlikely
level: high