{"id":"c9fbe8e9-119d-40a6-9b59-dd58a5d84429","title":"Potential Ransomware or Unauthorized MBR Tampering Via Bcdedit.EXE","description":"Detects potential malicious and unauthorized usage of bcdedit.exe","author":"@neu5ron","status":"test","level":"medium","date":"2019-02-07","modified":"2023-02-15","tags":["attack.stealth","attack.t1070","attack.persistence","attack.t1542.003"],"technique_ids":["T1070","T1542.003"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":[],"references":["https://learn.microsoft.com/en-us/windows-hardware/drivers/devtest/bcdedit--set","https://twitter.com/malwrhunterteam/status/1372536434125512712/photo/2"],"source_path":"rules/windows/process_creation/proc_creation_win_bcdedit_susp_execution.yml","source_sha256":"d239927c564f654165ce4f1fe5ef290fbe9b8802e61644d0c9aa354bc79cb946","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_bcdedit_susp_execution.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential Ransomware or Unauthorized MBR Tampering Via Bcdedit.EXE\nid: c9fbe8e9-119d-40a6-9b59-dd58a5d84429\nstatus: test\ndescription: Detects potential malicious and unauthorized usage of bcdedit.exe\nreferences:\n    - https://learn.microsoft.com/en-us/windows-hardware/drivers/devtest/bcdedit--set\n    - https://twitter.com/malwrhunterteam/status/1372536434125512712/photo/2\nauthor: '@neu5ron'\ndate: 2019-02-07\nmodified: 2023-02-15\ntags:\n    - attack.stealth\n    - attack.t1070\n    - attack.persistence\n    - attack.t1542.003\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\bcdedit.exe'\n        - OriginalFileName: 'bcdedit.exe'\n    selection_cli:\n        CommandLine|contains:\n            - 'delete'\n            - 'deletevalue'\n            - 'import'\n            - 'safeboot'\n            - 'network'\n    condition: all of selection_*\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1070","id":"T1070","name":"Indicator Removal","page":"techniques/enterprise/T1070/"},{"key":"enterprise/T1542.003","id":"T1542.003","name":"Bootkit","page":"techniques/enterprise/T1542.003/"}],"data_path":"data/detection-rules/c9fbe8e9-119d-40a6-9b59-dd58a5d84429.json","kind":"sigma"}