Sigma rule: DNS Query To Ufile.io

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-37821545c798, updated 2023-09-18T00:00:00.000Z.

Rule

Title
DNS Query To Ufile.io
Status
test
Level
low
Author
yatinwad, TheDFIRReport
Date
2022-06-23
Modified
2023-09-18
File
rules/windows/dns_query/dns_query_win_ufile_io_query.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects DNS queries to "ufile.io", which was seen abused by malware and threat actors as a method for data exfiltration

Log source

product
windows
category
dns_query

Detection

selection:
    QueryName|contains: 'ufile.io'
condition: selection

False positives (as the rule lists them)

  • DNS queries for "ufile" are not malicious by nature necessarily. Investigate the source to determine the necessary actions to take

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_ufile_io_query.yml

Sources and licences

  • SigmaHQ

    "DNS Query To Ufile.io" by yatinwad, TheDFIRReport (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/dns_query/dns_query_win_ufile_io_query.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 To Ufile.io",
entity page, dataset version ref-37821545c798, updated 2023-09-18T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/1cbbeaaf-3c8c-4e4c-9d72-49485b6a176b (accessed 2026-11-03).
Underlying source: SigmaHQ rule 1cbbeaaf-3c8c-4e4c-9d72-49485b6a176b, 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.