{"id":"8a4519e8-e64a-40b6-ae85-ba8ad2177559","title":"Renamed BrowserCore.EXE Execution","description":"Detects process creation with a renamed BrowserCore.exe (used to extract Azure tokens)","author":"Max Altgelt (Nextron Systems)","status":"test","level":"high","date":"2022-06-02","modified":"2023-02-03","tags":["attack.credential-access","attack.stealth","attack.t1528","attack.t1036.003"],"technique_ids":["T1036.003","T1528"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://twitter.com/mariuszbit/status/1531631015139102720"],"source_path":"rules/windows/process_creation/proc_creation_win_renamed_browsercore.yml","source_sha256":"c1db5b01fc067d3f74f2ba83516fbc9a89428b5c37ce43a99b5f65aa82829a84","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_renamed_browsercore.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Renamed BrowserCore.EXE Execution\nid: 8a4519e8-e64a-40b6-ae85-ba8ad2177559\nstatus: test\ndescription: Detects process creation with a renamed BrowserCore.exe (used to extract Azure tokens)\nreferences:\n    - https://twitter.com/mariuszbit/status/1531631015139102720\nauthor: Max Altgelt (Nextron Systems)\ndate: 2022-06-02\nmodified: 2023-02-03\ntags:\n    - attack.credential-access\n    - attack.stealth\n    - attack.t1528\n    - attack.t1036.003\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        OriginalFileName: BrowserCore.exe\n    filter_realbrowsercore:\n        Image|endswith: '\\BrowserCore.exe'\n    condition: selection and not 1 of filter_*\nfalsepositives:\n    - Unknown\nlevel: high\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/T1528","id":"T1528","name":"Steal Application Access Token","page":"techniques/enterprise/T1528/"}],"data_path":"data/detection-rules/8a4519e8-e64a-40b6-ae85-ba8ad2177559.json","kind":"sigma"}