{"id":"9719a8aa-401c-41af-8108-ced7ec9cd75c","title":"Windows Defender Definition Files Removed","description":"Adversaries may disable security tools to avoid possible detection of their tools and activities by removing Windows Defender Definition Files","author":"frack113","status":"test","level":"high","date":"2021-07-07","modified":"2023-07-18","tags":["attack.defense-impairment","attack.t1685"],"technique_ids":["T1685"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md","https://unit42.paloaltonetworks.com/unit42-gorgon-group-slithering-nation-state-cybercrime/"],"source_path":"rules/windows/process_creation/proc_creation_win_mpcmdrun_remove_windows_defender_definition.yml","source_sha256":"5bd66d4e59e9c46acad57f7245e611f37d0d81d65f721ec81125a6f22f9f6c87","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_mpcmdrun_remove_windows_defender_definition.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Windows Defender Definition Files Removed\nid: 9719a8aa-401c-41af-8108-ced7ec9cd75c\nstatus: test\ndescription: Adversaries may disable security tools to avoid possible detection of their tools and activities by removing Windows Defender Definition Files\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md\n    - https://unit42.paloaltonetworks.com/unit42-gorgon-group-slithering-nation-state-cybercrime/\nauthor: frack113\ndate: 2021-07-07\nmodified: 2023-07-18\ntags:\n    - attack.defense-impairment\n    - attack.t1685\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\MpCmdRun.exe'\n        - OriginalFileName: MpCmdRun.exe\n    selection_cli:\n        CommandLine|contains|all:\n            - ' -RemoveDefinitions'\n            - ' -All'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1685","id":"T1685","name":"Disable or Modify Tools","page":"techniques/enterprise/T1685/"}],"data_path":"data/detection-rules/9719a8aa-401c-41af-8108-ced7ec9cd75c.json","kind":"sigma"}