Sigma rule: Potential Encrypted Registry Blob Related To SNAKE Malware

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-5c7159452787, updated 2023-08-17T00:00:00.000Z.

Rule

Title
Potential Encrypted Registry Blob Related To SNAKE Malware
Status
test
Level
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-05-10
Modified
2023-08-17
File
rules-emerging-threats/2023/Malware/SNAKE/registry_set_malware_snake_encrypted_key.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the creation of a registry value in the ".wav\OpenWithProgIds" key with an uncommon name. This could be related to SNAKE Malware as reported by CISA

Log source

product
windows
category
registry_set

Detection

selection:
    TargetObject|contains: '\SOFTWARE\Classes\.wav\OpenWithProgIds\'
filter_main_wav:
    - TargetObject|endswith: '.AssocFile.WAV'
    - TargetObject|contains: '.wav.'
condition: selection and not 1 of filter_main_*

False positives (as the rule lists them)

  • Some additional tuning might be required to tune out legitimate processes that write to this key by default

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/registry_set_malware_snake_encrypted_key.yml

Sources and licences

  • SigmaHQ

    "Potential Encrypted Registry Blob Related To SNAKE Malware" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Malware/SNAKE/registry_set_malware_snake_encrypted_key.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 Encrypted Registry Blob Related To SNAKE Malware",
entity page, dataset version ref-5c7159452787, updated 2023-08-17T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/7e163e96-b9a5-45d6-b2cd-d7d87b13c60b (accessed 2026-11-03).
Underlying source: SigmaHQ rule 7e163e96-b9a5-45d6-b2cd-d7d87b13c60b, 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.