Sigma rule: Potential SNAKE Malware Persistence Service Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-487405a122a1, updated 2023-05-04T00:00:00.000Z.

Rule

Title
Potential SNAKE Malware Persistence Service Execution
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-05-04
File
rules-emerging-threats/2023/Malware/SNAKE/proc_creation_win_malware_snake_service_execution.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects a specific child/parent process relationship indicative of a "WerFault" process running from the "WinSxS" as a service. This could be indicative of potential SNAKE malware activity as reported by CISA.

Log source

product
windows
category
process_creation

Detection

selection:
    ParentImage|endswith: '\services.exe'
    Image|startswith: 'C:\Windows\WinSxS\'
    Image|endswith: '\WerFault.exe'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.execution
  • detection.emerging-threats

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/2023/Malware/SNAKE/proc_creation_win_malware_snake_service_execution.yml

Sources and licences

  • SigmaHQ

    "Potential SNAKE Malware Persistence Service Execution" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Malware/SNAKE/proc_creation_win_malware_snake_service_execution.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: Potential SNAKE Malware Persistence Service Execution",
entity page, dataset version ref-487405a122a1, updated 2023-05-04T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/f7536642-4a08-4dd9-b6d5-c3286d8975ed (accessed 2026-11-03).
Underlying source: SigmaHQ rule f7536642-4a08-4dd9-b6d5-c3286d8975ed, 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.