Sigma rule: SNAKE Malware Service Persistence

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-52b9f091a357, updated 2023-05-10T00:00:00.000Z.

Rule

Title
SNAKE Malware Service Persistence
Status
test
Level
critical
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-05-10
File
rules-emerging-threats/2023/Malware/SNAKE/win_system_malware_snake_persistence_service.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the creation of a service named "WerFaultSvc" which seems to be used by the SNAKE malware as a persistence mechanism as described by CISA in their report

Log source

product
windows
service
system

Detection

selection:
    Provider_Name: 'Service Control Manager'
    EventID: 7045
    ServiceName|contains: 'WerFaultSvc' # Note: The report contains a "," in the name ("WerFaultSvc,"). Since we can't confirm if its a typo or not we don't use it
    ImagePath|startswith: 'C:\Windows\WinSxS\'
    ImagePath|endswith: '\WerFault.exe'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.persistence
  • 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/win_system_malware_snake_persistence_service.yml

Sources and licences

  • SigmaHQ

    "SNAKE Malware Service Persistence" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Malware/SNAKE/win_system_malware_snake_persistence_service.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: SNAKE Malware Service Persistence",
entity page, dataset version ref-52b9f091a357, updated 2023-05-10T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/b2e60816-96b2-45bd-ba91-b63578c03ef6 (accessed 2026-11-03).
Underlying source: SigmaHQ rule b2e60816-96b2-45bd-ba91-b63578c03ef6, 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.