Tor Client/Browser Execution

Description

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

Query · sigma

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

Known false positives

  • Unknown
Raw source Tor Client/Browser Execution · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
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

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