{"id":"be344333-921d-4c4d-8bb8-e584cf584780","title":"Potentially Suspicious Event Viewer Child Process","description":"Detects uncommon or suspicious child processes of \"eventvwr.exe\" which might indicate a UAC bypass attempt","author":"Florian Roth (Nextron Systems)","status":"test","level":"high","date":"2017-03-19","modified":"2023-09-28","tags":["attack.privilege-escalation","attack.t1548.002","car.2019-04-001"],"technique_ids":["T1548.002"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://enigma0x3.net/2016/08/15/fileless-uac-bypass-using-eventvwr-exe-and-registry-hijacking/","https://www.hybrid-analysis.com/sample/e122bc8bf291f15cab182a5d2d27b8db1e7019e4e96bb5cdbd1dfe7446f3f51f?environmentId=100"],"source_path":"rules/windows/process_creation/proc_creation_win_eventvwr_susp_child_process.yml","source_sha256":"6038dcc5714a06bba519c49406edd7d78173ed7cf300cf07aeba59bc099d622f","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_eventvwr_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: Potentially Suspicious Event Viewer Child Process\nid: be344333-921d-4c4d-8bb8-e584cf584780\nrelated:\n    - id: 7c81fec3-1c1d-43b0-996a-46753041b1b6\n      type: derived\nstatus: test\ndescription: Detects uncommon or suspicious child processes of \"eventvwr.exe\" which might indicate a UAC bypass attempt\nreferences:\n    - https://enigma0x3.net/2016/08/15/fileless-uac-bypass-using-eventvwr-exe-and-registry-hijacking/\n    - https://www.hybrid-analysis.com/sample/e122bc8bf291f15cab182a5d2d27b8db1e7019e4e96bb5cdbd1dfe7446f3f51f?environmentId=100\nauthor: Florian Roth (Nextron Systems)\ndate: 2017-03-19\nmodified: 2023-09-28\ntags:\n    - attack.privilege-escalation\n    - attack.t1548.002\n    - car.2019-04-001\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        ParentImage|endswith: '\\eventvwr.exe'\n    filter_main_generic:\n        Image|endswith:\n            - ':\\Windows\\System32\\mmc.exe'\n            - ':\\Windows\\System32\\WerFault.exe'\n            - ':\\Windows\\SysWOW64\\WerFault.exe'\n    condition: selection and not 1 of filter_main_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1548.002","id":"T1548.002","name":"Bypass User Account Control","page":"techniques/enterprise/T1548.002/"}],"data_path":"data/detection-rules/be344333-921d-4c4d-8bb8-e584cf584780.json","kind":"sigma"}