Sigma rule: Tor Client/Browser Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-a287b80c1655, updated 2025-10-27T00:00:00.000Z.

Rule

Title
Tor Client/Browser Execution
Status
test
Level
high
Author
frack113
Date
2022-02-20
Modified
2025-10-27
File
rules/windows/process_creation/proc_creation_win_browsers_tor_execution.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the use of Tor or Tor-Browser to connect to onion routing networks

Log source

product
windows
category
process_creation

Detection

selection:
    - Description: 'Tor Browser'
    - Product: 'Tor Browser'
    - Image|endswith:
          - '\tor.exe'
          - '\Tor Browser\Browser\firefox.exe'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.command-and-control
  • attack.t1090.003

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/windows/process_creation/proc_creation_win_browsers_tor_execution.yml

Sources and licences

  • SigmaHQ

    "Tor Client/Browser Execution" by frack113 (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_browsers_tor_execution.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: Tor Client/Browser Execution",
entity page, dataset version ref-a287b80c1655, updated 2025-10-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/62f7c9bf-9135-49b2-8aeb-1e54a6ecc13c (accessed 2026-11-03).
Underlying source: SigmaHQ rule 62f7c9bf-9135-49b2-8aeb-1e54a6ecc13c, 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.