{"id":"a4e3d776-f12e-42c2-8510-9e6ed1f43ec3","title":"Unusual Child Process of dns.exe","description":"Detects an unexpected process spawning from dns.exe which may indicate activity related to remote code execution or other forms of exploitation as seen in CVE-2020-1350 (SigRed)","author":"Tim Rauch, Elastic (idea)","status":"test","level":"high","date":"2022-09-27","modified":"2023-02-05","tags":["attack.persistence","attack.initial-access","attack.t1133"],"technique_ids":["T1133"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://www.elastic.co/guide/en/security/current/unusual-child-process-of-dns-exe.html"],"source_path":"rules/windows/process_creation/proc_creation_win_dns_susp_child_process.yml","source_sha256":"0d7c4496c2b09e2ea37abb6b8a362534952d87b8afde79c9097aa6676bcac991","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_dns_susp_child_process.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Unusual Child Process of dns.exe\nid: a4e3d776-f12e-42c2-8510-9e6ed1f43ec3\nstatus: test\ndescription: Detects an unexpected process spawning from dns.exe which may indicate activity related to remote code execution or other forms of exploitation as seen in CVE-2020-1350 (SigRed)\nreferences:\n    - https://www.elastic.co/guide/en/security/current/unusual-child-process-of-dns-exe.html\nauthor: Tim Rauch, Elastic (idea)\ndate: 2022-09-27\nmodified: 2023-02-05\ntags:\n    - attack.persistence\n    - attack.initial-access\n    - attack.t1133\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        ParentImage|endswith: '\\dns.exe'\n    filter:\n        Image|endswith: '\\conhost.exe'\n    condition: selection and not filter\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1133","id":"T1133","name":"External Remote Services","page":"techniques/enterprise/T1133/"}],"data_path":"data/detection-rules/a4e3d776-f12e-42c2-8510-9e6ed1f43ec3.json","kind":"sigma"}