Sigma rule: DPRK Threat Actor - C2 Communication DNS Indicators

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-bf2219b34d42, updated 2024-02-20T00:00:00.000Z.

Rule

Title: DPRK Threat Actor - C2 Communication DNS Indicators
Status: test
Level: high
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2024-02-20
File: rules-emerging-threats/2024/TA/DPRK/dns_query_win_apt_dprk_malicious_domains.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects DNS queries for C2 domains used by DPRK Threat actors.

Log source

product: windows
category: dns_query

Detection

selection:
    QueryName:
        - 'connection.lockscreen.kro.kr'
        - 'updating.dothome.co.kr'
condition: selection

False positives (as the rule lists them)

Unlikely

References

https://www.verfassungsschutz.de/SharedDocs/publikationen/DE/cyberabwehr/2024-02-19-joint-cyber-security-advisory-englisch.pdf?__blob=publicationFile&v=2

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/2024/TA/DPRK/dns_query_win_apt_dprk_malicious_domains.yml

Sources and licences

SigmaHQ
"DPRK Threat Actor - C2 Communication DNS Indicators" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2024/TA/DPRK/dns_query_win_apt_dprk_malicious_domains.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: DPRK Threat Actor - C2 Communication DNS Indicators",
entity page, dataset version ref-bf2219b34d42, updated 2024-02-20T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/4d16c9a6-4362-4863-9940-1dee35f1d70f (accessed 2026-11-03).
Underlying source: SigmaHQ rule 4d16c9a6-4362-4863-9940-1dee35f1d70f, 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.