{"id":"7d4aaec2-08ed-4430-8b96-28420e030e04","title":"Uncommon Sigverif.EXE Child Process","description":"Detects uncommon child processes spawning from \"sigverif.exe\", which could indicate potential abuse of the latter as a living of the land binary in order to proxy execution.\n","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2022-08-19","modified":"2024-08-27","tags":["attack.stealth","attack.t1216"],"technique_ids":["T1216"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://www.hexacorn.com/blog/2018/04/27/i-shot-the-sigverif-exe-the-gui-based-lolbin/","https://twitter.com/0gtweet/status/1457676633809330184"],"source_path":"rules/windows/process_creation/proc_creation_win_sigverif_uncommon_child_process.yml","source_sha256":"983e382eacbcc32d1258261883bcfbe94c6b76d4a41a7c7f9ad7a9d9c7f3d9c9","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_sigverif_uncommon_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: Uncommon Sigverif.EXE Child Process\nid: 7d4aaec2-08ed-4430-8b96-28420e030e04\nstatus: test\ndescription: |\n    Detects uncommon child processes spawning from \"sigverif.exe\", which could indicate potential abuse of the latter as a living of the land binary in order to proxy execution.\nreferences:\n    - https://www.hexacorn.com/blog/2018/04/27/i-shot-the-sigverif-exe-the-gui-based-lolbin/\n    - https://twitter.com/0gtweet/status/1457676633809330184\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-08-19\nmodified: 2024-08-27\ntags:\n    - attack.stealth\n    - attack.t1216\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        ParentImage|endswith: '\\sigverif.exe'\n    filter_main_werfault:\n        Image:\n            - 'C:\\Windows\\System32\\WerFault.exe'\n            - 'C:\\Windows\\SysWOW64\\WerFault.exe'\n    condition: selection and not 1 of filter_main_*\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1216","id":"T1216","name":"System Script Proxy Execution","page":"techniques/enterprise/T1216/"}],"data_path":"data/detection-rules/7d4aaec2-08ed-4430-8b96-28420e030e04.json","kind":"sigma"}