Sigma rule: Diamond Sleet APT DNS Communication Indicators

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-905042ab9581, updated 2023-10-24T00:00:00.000Z.

Rule

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

Detects DNS queries related to Diamond Sleet APT activity

Log source

product
windows
category
dns_query

Detection

selection:
    QueryName|contains:
        - '3dkit.org'
        - 'dersmarketim.com'
        - 'galerielamy.com'
        - 'olidhealth.com'
condition: selection

False positives (as the rule lists them)

  • Might generate some false positive if triggered by a user during investigation for example.

Tags

  • attack.command-and-control
  • 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/Diamond-Sleet/dns_query_win_apt_diamond_steel_indicators.yml

Sources and licences

  • SigmaHQ

    "Diamond Sleet APT DNS Communication Indicators" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/TA/Diamond-Sleet/dns_query_win_apt_diamond_steel_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: Diamond Sleet APT DNS Communication Indicators",
entity page, dataset version ref-905042ab9581, updated 2023-10-24T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/fba38e0f-4607-4344-bb8f-a4b50cdeef7f (accessed 2026-11-03).
Underlying source: SigmaHQ rule fba38e0f-4607-4344-bb8f-a4b50cdeef7f, 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.