Tor Client/Browser Execution — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: high. Source dates: 2022-02-20 / 2025-10-27.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 644253272f6fbdce37cd64edecb83610b1ad236d9e249d5f6eb594d237fa82bf

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Tor Client/Browser Execution
id: 62f7c9bf-9135-49b2-8aeb-1e54a6ecc13c
status: test
description: Detects the use of Tor or Tor-Browser to connect to onion routing networks
references:
    - https://www.logpoint.com/en/blog/detecting-tor-use-with-logpoint/
author: frack113
date: 2022-02-20
modified: 2025-10-27
tags:
    - attack.command-and-control
    - attack.t1090.003
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Description: 'Tor Browser'
        - Product: 'Tor Browser'
        - Image|endswith:
              - '\tor.exe'
              - '\Tor Browser\Browser\firefox.exe'
    condition: selection
falsepositives:
    - Unknown
level: high
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_browsers_tor_execution/info.yml

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://www.logpoint.com/en/blog/detecting-tor-use-with-logpoint/