Sigma rule: Onyx Sleet APT File Creation Indicators

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-579647c0246f, updated 2023-10-24T00:00:00.000Z.

Rule

Title
Onyx Sleet APT File Creation Indicators
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-10-24
File
rules-emerging-threats/2023/TA/Onyx-Sleet/file_event_win_apt_onyx_sleet_indicators.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects file creation activity that is related to Onyx Sleet APT activity

Log source

product
windows
category
file_event

Detection

selection:
    TargetFilename|endswith: ':\Windows\ADFS\bg\inetmgr.exe'
condition: selection

False positives (as the rule lists them)

  • Unlikely

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/TA/Onyx-Sleet/file_event_win_apt_onyx_sleet_indicators.yml

Sources and licences

  • SigmaHQ

    "Onyx Sleet APT File Creation Indicators" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/TA/Onyx-Sleet/file_event_win_apt_onyx_sleet_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: Onyx Sleet APT File Creation Indicators",
entity page, dataset version ref-579647c0246f, updated 2023-10-24T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/2fef4fd9-7206-40d1-b4f5-ad6441d0cd9b (accessed 2026-11-03).
Underlying source: SigmaHQ rule 2fef4fd9-7206-40d1-b4f5-ad6441d0cd9b, 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.