Sigma rule: Crypto Miner User Agent

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-f5396c0afa40, updated 2021-11-27T00:00:00.000Z.

Rule

Title
Crypto Miner User Agent
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2019-10-21
Modified
2021-11-27
File
rules/web/proxy_generic/proxy_ua_cryptominer.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects suspicious user agent strings used by crypto miners in proxy logs

Log source

category
proxy

Detection

selection:
    c-useragent|startswith:
    # XMRig
        - 'XMRig '
    # CCMiner
        - 'ccminer'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.command-and-control
  • attack.t1071.001

MITRE ATT&CK ids this rule names

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/web/proxy_generic/proxy_ua_cryptominer.yml

Sources and licences

  • SigmaHQ

    "Crypto Miner User Agent" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/web/proxy_generic/proxy_ua_cryptominer.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: Crypto Miner User Agent",
entity page, dataset version ref-f5396c0afa40, updated 2021-11-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/fa935401-513b-467b-81f4-f9e77aa0dd78 (accessed 2026-11-03).
Underlying source: SigmaHQ rule fa935401-513b-467b-81f4-f9e77aa0dd78, 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.