Goofy Guineapig Backdoor Potential C2 Communication

Description

Detects potential C2 communication related to Goofy Guineapig backdoor

Query · sigma

selection:
  c-useragent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like
    Gecko) Chrome/54.0.2840.71 Safari/537.36
  cs-host: static.tcplog.com
condition: selection

Known false positives

  • Unlikely
Raw source Goofy Guineapig Backdoor Potential C2 Communication · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Goofy Guineapig Backdoor Potential C2 Communication
id: 4f573bb6-701a-4b8d-91db-87ae106e9a61
status: test
description: Detects potential C2 communication related to Goofy Guineapig backdoor
references:
    - https://www.ncsc.gov.uk/static-assets/documents/malware-analysis-reports/goofy-guineapig/NCSC-MAR-Goofy-Guineapig.pdf
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-14
tags:
    - attack.command-and-control
    - detection.emerging-threats
logsource:
    category: proxy
detection:
    selection:
        c-useragent: 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36'
        cs-host: 'static.tcplog.com'
    condition: selection
falsepositives:
    - Unlikely
level: high

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