Sigma rule: Goofy Guineapig Backdoor IOC

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-0ffe81a982d6, updated 2023-05-14T00:00:00.000Z.

Rule

Title
Goofy Guineapig Backdoor IOC
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-05-14
File
rules-emerging-threats/2021/Malware/Goofy-Guineapig/file_event_win_malware_goofy_guineapig_file_indicators.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects malicious indicators seen used by the Goofy Guineapig malware

Log source

product
windows
category
file_event

Detection

selection:
    TargetFilename:
        - 'C:\ProgramData\GoogleUpdate\config.dat'
        - 'C:\ProgramData\GoogleUpdate\GoogleUpdate.exe'
        - 'C:\ProgramData\GoogleUpdate\GoogleUpdate\tmp.bat'
        - 'C:\ProgramData\GoogleUpdate\goopdate.dll'
condition: selection

False positives (as the rule lists them)

  • Unlikely

Tags

  • attack.execution
  • detection.emerging-threats
  • attack.stealth

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2021/Malware/Goofy-Guineapig/file_event_win_malware_goofy_guineapig_file_indicators.yml

Sources and licences

  • SigmaHQ

    "Goofy Guineapig Backdoor IOC" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2021/Malware/Goofy-Guineapig/file_event_win_malware_goofy_guineapig_file_indicators.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Goofy Guineapig Backdoor IOC",
entity page, dataset version ref-0ffe81a982d6, updated 2023-05-14T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/f0bafe60-1240-4798-9e60-4364b97e6bad (accessed 2026-11-03).
Underlying source: SigmaHQ rule f0bafe60-1240-4798-9e60-4364b97e6bad, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.