Sigma rule: Rclone Activity via Proxy

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-67627609495a, updated 2022-10-18T00:00:00.000Z.

Rule

Title
Rclone Activity via Proxy
Status
test
Level
medium
Author
Janantha Marasinghe
Date
2022-10-18
File
rules/web/proxy_generic/proxy_ua_rclone.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the use of rclone, a command-line program to manage files on cloud storage, via its default user-agent string

Log source

category
proxy

Detection

selection:
    c-useragent|startswith: 'rclone/v'
condition: selection

False positives (as the rule lists them)

  • Valid requests with this exact user agent to that is used by legitimate scripts or sysadmin operations

Tags

  • attack.exfiltration
  • attack.t1567.002

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_rclone.yml

Sources and licences

  • SigmaHQ

    "Rclone Activity via Proxy" by Janantha Marasinghe (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/web/proxy_generic/proxy_ua_rclone.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: Rclone Activity via Proxy",
entity page, dataset version ref-67627609495a, updated 2022-10-18T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/2c03648b-e081-41a5-b9fb-7d854a915091 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 2c03648b-e081-41a5-b9fb-7d854a915091, 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.