{"id":"96036718-71cc-4027-a538-d1587e0006a7","title":"Windows Processes Suspicious Parent Directory","description":"Detect suspicious parent processes of well-known Windows processes","author":"vburov","status":"test","level":"low","date":"2019-02-23","modified":"2025-03-06","tags":["attack.stealth","attack.t1036.003","attack.t1036.005"],"technique_ids":["T1036.003","T1036.005"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Some security products seem to spawn these"],"references":["https://web.archive.org/web/20180718061628/https://securitybytes.io/blue-team-fundamentals-part-two-windows-processes-759fe15965e2","https://www.carbonblack.com/2014/06/10/screenshot-demo-hunt-evil-faster-than-ever-with-carbon-black/","https://www.13cubed.com/downloads/windows_process_genealogy_v2.pdf"],"source_path":"rules/windows/process_creation/proc_creation_win_susp_proc_wrong_parent.yml","source_sha256":"c9e45b12e36d1381bce6ddbd22ee1a4dbdd7be1a455836387746d15fbc967597","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_susp_proc_wrong_parent.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Windows Processes Suspicious Parent Directory\nid: 96036718-71cc-4027-a538-d1587e0006a7\nstatus: test\ndescription: Detect suspicious parent processes of well-known Windows processes\nreferences:\n    - https://web.archive.org/web/20180718061628/https://securitybytes.io/blue-team-fundamentals-part-two-windows-processes-759fe15965e2\n    - https://www.carbonblack.com/2014/06/10/screenshot-demo-hunt-evil-faster-than-ever-with-carbon-black/\n    - https://www.13cubed.com/downloads/windows_process_genealogy_v2.pdf\nauthor: vburov\ndate: 2019-02-23\nmodified: 2025-03-06\ntags:\n    - attack.stealth\n    - attack.t1036.003\n    - attack.t1036.005\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        Image|endswith:\n            - '\\svchost.exe'\n            - '\\taskhost.exe'\n            - '\\lsm.exe'\n            - '\\lsass.exe'\n            - '\\services.exe'\n            - '\\lsaiso.exe'\n            - '\\csrss.exe'\n            - '\\wininit.exe'\n            - '\\winlogon.exe'\n    filter_sys:\n        - ParentImage|endswith:\n              - '\\SavService.exe'\n              - '\\ngen.exe'\n        - ParentImage|contains:\n              - '\\System32\\'\n              - '\\SysWOW64\\'\n    filter_msmpeng:\n        ParentImage|contains:\n            - '\\Windows Defender\\'\n            - '\\Microsoft Security Client\\'\n        ParentImage|endswith: '\\MsMpEng.exe'\n    filter_null:\n        - ParentImage: null\n        - ParentImage:\n              - ''\n              - '-'\n    condition: selection and not 1 of filter_*\nfalsepositives:\n    - Some security products seem to spawn these\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1036.003","id":"T1036.003","name":"Rename Legitimate Utilities","page":"techniques/enterprise/T1036.003/"},{"key":"enterprise/T1036.005","id":"T1036.005","name":"Match Legitimate Resource Name or Location","page":"techniques/enterprise/T1036.005/"}],"data_path":"data/detection-rules/96036718-71cc-4027-a538-d1587e0006a7.json","kind":"sigma"}