DNS TOR Proxies

Description

Identifies IPs performing DNS lookups associated with common Tor proxies.

Query · sigma

selection:
  query|endswith:
  - .hiddenservice.net
  - .onion.ca
  - .onion.cab
  - .onion.casa
  - .onion.city
  - .onion.direct
  - .onion.dog
  - .onion.glass
  - .onion.gq
  - .onion.guide
  - .onion.in.net
  - .onion.ink
  - .onion.it
  - .onion.link
  - .onion.lt
  - .onion.lu
  - .onion.ly
  - .onion.mn
  - .onion.network
  - .onion.nu
  - .onion.pet
  - .onion.plus
  - .onion.pt
  - .onion.pw
  - .onion.rip
  - .onion.sh
  - .onion.si
  - .onion.to
  - .onion.top
  - .onion.ws
  - .onion
  - .s1.tor-gateways.de
  - .s2.tor-gateways.de
  - .s3.tor-gateways.de
  - .s4.tor-gateways.de
  - .s5.tor-gateways.de
  - .t2w.pw
  - .tor2web.ae.org
  - .tor2web.blutmagie.de
  - .tor2web.com
  - .tor2web.fi
  - .tor2web.io
  - .tor2web.org
  - .tor2web.xyz
  - .torlink.co
condition: selection

Known false positives

  • Unknown
Raw source DNS TOR Proxies · Sigma
Esc
Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: DNS TOR Proxies
id: a8322756-015c-42e7-afb1-436e85ed3ff5
related:
    - id: b55ca2a3-7cff-4dda-8bdd-c7bfa63bf544
      type: similar
    - id: 8384bd26-bde6-4da9-8e5d-4174a7a47ca2
      type: similar
status: test
description: Identifies IPs performing DNS lookups associated with common Tor proxies.
references:
    - https://github.com/Azure/Azure-Sentinel/blob/f99542b94afe0ad2f19a82cc08262e7ac8e1428e/Detections/ASimDNS/imDNS_TorProxies.yaml
author: Saw Winn Naung , Azure-Sentinel
date: 2021-08-15
modified: 2025-09-12
tags:
    - attack.exfiltration
    - attack.t1048
logsource:
    service: dns
    product: zeek
detection:
    selection:
        query|endswith:
            - '.hiddenservice.net'
            - '.onion.ca'
            - '.onion.cab'
            - '.onion.casa'
            - '.onion.city'
            - '.onion.direct'
            - '.onion.dog'
            - '.onion.glass'
            - '.onion.gq'
            - '.onion.guide'
            - '.onion.in.net'
            - '.onion.ink'
            - '.onion.it'
            - '.onion.link'
            - '.onion.lt'
            - '.onion.lu'
            - '.onion.ly'
            - '.onion.mn'
            - '.onion.network'
            - '.onion.nu'
            - '.onion.pet'
            - '.onion.plus'
            - '.onion.pt'
            - '.onion.pw'
            - '.onion.rip'
            - '.onion.sh'
            - '.onion.si'
            - '.onion.to'
            - '.onion.top'
            - '.onion.ws'
            - '.onion'
            - '.s1.tor-gateways.de'
            - '.s2.tor-gateways.de'
            - '.s3.tor-gateways.de'
            - '.s4.tor-gateways.de'
            - '.s5.tor-gateways.de'
            - '.t2w.pw'
            - '.tor2web.ae.org'
            - '.tor2web.blutmagie.de'
            - '.tor2web.com'
            - '.tor2web.fi'
            - '.tor2web.io'
            - '.tor2web.org'
            - '.tor2web.xyz'
            - '.torlink.co'
    condition: selection
falsepositives:
    - Unknown
level: medium

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