{"id":"f356a9c4-effd-4608-bbf8-408afd5cd006","title":"Suspicious Cobalt Strike DNS Beaconing - Sysmon","description":"Detects a program that invoked suspicious DNS queries known from Cobalt Strike beacons","author":"Florian Roth (Nextron Systems)","status":"test","level":"critical","date":"2021-11-09","modified":"2023-01-16","tags":["attack.command-and-control","attack.t1071.004"],"technique_ids":["T1071.004"],"logsource":{"product":"windows","category":"dns_query"},"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/windows/dns_query/dns_query_win_mal_cobaltstrike.yml","source_sha256":"71ef18383ece266d2beb091974e2d32ee13463bd3745d15d5f432eee2bdc55d6","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/dns_query/dns_query_win_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: Suspicious Cobalt Strike DNS Beaconing - Sysmon\nid: f356a9c4-effd-4608-bbf8-408afd5cd006\nrelated:\n    - id: 0d18728b-f5bf-4381-9dcf-915539fff6c2\n      type: similar\nstatus: test\ndescription: Detects a program that invoked 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: 2021-11-09\nmodified: 2023-01-16\ntags:\n    - attack.command-and-control\n    - attack.t1071.004\nlogsource:\n    product: windows\n    category: dns_query\ndetection:\n    selection1:\n        QueryName|startswith:\n            - 'aaa.stage.'\n            - 'post.1'\n    selection2:\n        QueryName|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/f356a9c4-effd-4608-bbf8-408afd5cd006.json","kind":"sigma"}