{"id":"a8322756-015c-42e7-afb1-436e85ed3ff5","title":"DNS TOR Proxies","description":"Identifies IPs performing DNS lookups associated with common Tor proxies.","author":"Saw Winn Naung , Azure-Sentinel","status":"test","level":"medium","date":"2021-08-15","modified":"2025-09-12","tags":["attack.exfiltration","attack.t1048"],"technique_ids":["T1048"],"logsource":{"service":"dns","product":"zeek"},"falsepositives":["Unknown"],"references":["https://github.com/Azure/Azure-Sentinel/blob/f99542b94afe0ad2f19a82cc08262e7ac8e1428e/Detections/ASimDNS/imDNS_TorProxies.yaml"],"source_path":"rules/network/zeek/zeek_dns_torproxy.yml","source_sha256":"c7337db6149aa534052d6735053797351f8dc1d5111931a02c0f143b75c746a3","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/network/zeek/zeek_dns_torproxy.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: DNS TOR Proxies\nid: a8322756-015c-42e7-afb1-436e85ed3ff5\nrelated:\n    - id: b55ca2a3-7cff-4dda-8bdd-c7bfa63bf544\n      type: similar\n    - id: 8384bd26-bde6-4da9-8e5d-4174a7a47ca2\n      type: similar\nstatus: test\ndescription: Identifies IPs performing DNS lookups associated with common Tor proxies.\nreferences:\n    - https://github.com/Azure/Azure-Sentinel/blob/f99542b94afe0ad2f19a82cc08262e7ac8e1428e/Detections/ASimDNS/imDNS_TorProxies.yaml\nauthor: Saw Winn Naung , Azure-Sentinel\ndate: 2021-08-15\nmodified: 2025-09-12\ntags:\n    - attack.exfiltration\n    - attack.t1048\nlogsource:\n    service: dns\n    product: zeek\ndetection:\n    selection:\n        query|endswith:\n            - '.hiddenservice.net'\n            - '.onion.ca'\n            - '.onion.cab'\n            - '.onion.casa'\n            - '.onion.city'\n            - '.onion.direct'\n            - '.onion.dog'\n            - '.onion.glass'\n            - '.onion.gq'\n            - '.onion.guide'\n            - '.onion.in.net'\n            - '.onion.ink'\n            - '.onion.it'\n            - '.onion.link'\n            - '.onion.lt'\n            - '.onion.lu'\n            - '.onion.ly'\n            - '.onion.mn'\n            - '.onion.network'\n            - '.onion.nu'\n            - '.onion.pet'\n            - '.onion.plus'\n            - '.onion.pt'\n            - '.onion.pw'\n            - '.onion.rip'\n            - '.onion.sh'\n            - '.onion.si'\n            - '.onion.to'\n            - '.onion.top'\n            - '.onion.ws'\n            - '.onion'\n            - '.s1.tor-gateways.de'\n            - '.s2.tor-gateways.de'\n            - '.s3.tor-gateways.de'\n            - '.s4.tor-gateways.de'\n            - '.s5.tor-gateways.de'\n            - '.t2w.pw'\n            - '.tor2web.ae.org'\n            - '.tor2web.blutmagie.de'\n            - '.tor2web.com'\n            - '.tor2web.fi'\n            - '.tor2web.io'\n            - '.tor2web.org'\n            - '.tor2web.xyz'\n            - '.torlink.co'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1048","id":"T1048","name":"Exfiltration Over Alternative Protocol","page":"techniques/enterprise/T1048/"}],"data_path":"data/detection-rules/a8322756-015c-42e7-afb1-436e85ed3ff5.json","kind":"sigma"}