{"id":"2975af79-28c4-4d2f-a951-9095f229df29","title":"Cobalt Strike DNS Beaconing","description":"Detects suspicious DNS queries known from Cobalt Strike beacons","author":"Florian Roth (Nextron Systems)","status":"test","level":"critical","date":"2018-05-10","modified":"2022-10-09","tags":["attack.command-and-control","attack.t1071.004"],"technique_ids":["T1071.004"],"logsource":{"category":"dns"},"falsepositives":["Unknown"],"references":["https://www.icebrg.io/blog/footprints-of-fin7-tracking-actor-patterns","https://www.sekoia.io/en/hunting-and-detecting-cobalt-strike/"],"source_path":"rules/network/dns/net_dns_mal_cobaltstrike.yml","source_sha256":"427596be2627bf4bd69fa9fe10716aa5890745861a68be350eb0624a45d1d8da","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/network/dns/net_dns_mal_cobaltstrike.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Cobalt Strike DNS Beaconing\nid: 2975af79-28c4-4d2f-a951-9095f229df29\nstatus: test\ndescription: Detects suspicious DNS queries known from Cobalt Strike beacons\nreferences:\n    - https://www.icebrg.io/blog/footprints-of-fin7-tracking-actor-patterns\n    - https://www.sekoia.io/en/hunting-and-detecting-cobalt-strike/\nauthor: Florian Roth (Nextron Systems)\ndate: 2018-05-10\nmodified: 2022-10-09\ntags:\n    - attack.command-and-control\n    - attack.t1071.004\nlogsource:\n    category: dns\ndetection:\n    selection1:\n        query|startswith:\n            - 'aaa.stage.'\n            - 'post.1'\n    selection2:\n        query|contains: '.stage.123456.'\n    condition: 1 of selection*\nfalsepositives:\n    - Unknown\nlevel: critical\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1071.004","id":"T1071.004","name":"DNS","page":"techniques/enterprise/T1071.004/"}],"data_path":"data/detection-rules/2975af79-28c4-4d2f-a951-9095f229df29.json","kind":"sigma"}