Sigma rule: DNS Query for Anonfiles.com Domain - Sysmon

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-7296a08e2756, updated 2023-01-16T00:00:00.000Z.

Rule

Title
DNS Query for Anonfiles.com Domain - Sysmon
Status
test
Level
high
Author
pH-T (Nextron Systems)
Date
2022-07-15
Modified
2023-01-16
File
rules/windows/dns_query/dns_query_win_anonymfiles_com.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects DNS queries for "anonfiles.com", which is an anonymous file upload platform often used for malicious purposes

Log source

product
windows
category
dns_query

Detection

selection:
    QueryName|contains: '.anonfiles.com'
condition: selection

False positives (as the rule lists them)

  • Rare legitimate access to anonfiles.com

Tags

  • attack.exfiltration
  • attack.t1567.002

MITRE ATT&CK ids this rule names

Related rules

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/windows/dns_query/dns_query_win_anonymfiles_com.yml

Sources and licences

  • SigmaHQ

    "DNS Query for Anonfiles.com Domain - Sysmon" by pH-T (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/dns_query/dns_query_win_anonymfiles_com.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: DNS Query for Anonfiles.com Domain - Sysmon",
entity page, dataset version ref-7296a08e2756, updated 2023-01-16T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/065cceea-77ec-4030-9052-fc0affea7110 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 065cceea-77ec-4030-9052-fc0affea7110, 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.