{"id":"9577edbb-851f-4243-8c91-1d5b50c1a39b","title":"Atbroker Registry Change","description":"Detects creation/modification of Assistive Technology applications and persistence with usage of 'at'","author":"Mateusz Wydra, oscd.community","status":"test","level":"medium","date":"2020-10-13","modified":"2023-01-19","tags":["attack.privilege-escalation","attack.stealth","attack.t1218","attack.persistence","attack.t1547"],"technique_ids":["T1218","T1547"],"logsource":{"category":"registry_event","product":"windows"},"falsepositives":["Creation of non-default, legitimate at usage"],"references":["http://www.hexacorn.com/blog/2016/07/22/beyond-good-ol-run-key-part-42/","https://lolbas-project.github.io/lolbas/Binaries/Atbroker/"],"source_path":"rules/windows/registry/registry_event/registry_event_susp_atbroker_change.yml","source_sha256":"cdcb0cfb393add5f457f8bebbf578460346b3e5f43faade731c30cfa75ebe2be","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/registry/registry_event/registry_event_susp_atbroker_change.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Atbroker Registry Change\nid: 9577edbb-851f-4243-8c91-1d5b50c1a39b\nstatus: test\ndescription: Detects creation/modification of Assistive Technology applications and persistence with usage of 'at'\nreferences:\n    - http://www.hexacorn.com/blog/2016/07/22/beyond-good-ol-run-key-part-42/\n    - https://lolbas-project.github.io/lolbas/Binaries/Atbroker/\nauthor: Mateusz Wydra, oscd.community\ndate: 2020-10-13\nmodified: 2023-01-19\ntags:\n    - attack.privilege-escalation\n    - attack.stealth\n    - attack.t1218\n    - attack.persistence\n    - attack.t1547\nlogsource:\n    category: registry_event\n    product: windows\ndetection:\n    selection:\n        TargetObject|contains:\n            - 'Software\\Microsoft\\Windows NT\\CurrentVersion\\Accessibility\\ATs'\n            - 'Software\\Microsoft\\Windows NT\\CurrentVersion\\Accessibility\\Configuration'\n    filter_atbroker:\n        Image: 'C:\\Windows\\system32\\atbroker.exe'\n        TargetObject|contains: '\\Microsoft\\Windows NT\\CurrentVersion\\Accessibility\\Configuration'\n        Details: '(Empty)'\n    filter_uninstallers:\n        Image|startswith: 'C:\\Windows\\Installer\\MSI'\n        TargetObject|contains: 'Software\\Microsoft\\Windows NT\\CurrentVersion\\Accessibility\\ATs'\n    condition: selection and not 1 of filter_*\nfalsepositives:\n    - Creation of non-default, legitimate at usage\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218","id":"T1218","name":"System Binary Proxy Execution","page":"techniques/enterprise/T1218/"},{"key":"enterprise/T1547","id":"T1547","name":"Boot or Logon Autostart Execution","page":"techniques/enterprise/T1547/"}],"data_path":"data/detection-rules/9577edbb-851f-4243-8c91-1d5b50c1a39b.json","kind":"sigma"}