{"id":"ea9bf0fa-edec-4fb8-8b78-b119f2528186","title":"Windows Defender AMSI Trigger Detected","description":"Detects triggering of AMSI by Windows Defender.","author":"Bhabesh Raj","status":"stable","level":"high","date":"2020-09-14","modified":"2022-12-07","tags":["attack.execution","attack.t1059"],"technique_ids":["T1059"],"logsource":{"product":"windows","service":"windefend"},"falsepositives":["Unlikely"],"references":["https://learn.microsoft.com/en-us/windows/win32/amsi/how-amsi-helps"],"source_path":"rules/windows/builtin/windefend/win_defender_malware_detected_amsi_source.yml","source_sha256":"76237a7d942e4731124ba5cf0d9b85bb8f62ba0a55e85d072e56cb0b9e2e3030","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/builtin/windefend/win_defender_malware_detected_amsi_source.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 AMSI Trigger Detected\nid: ea9bf0fa-edec-4fb8-8b78-b119f2528186\nstatus: stable\ndescription: Detects triggering of AMSI by Windows Defender.\nreferences:\n    - https://learn.microsoft.com/en-us/windows/win32/amsi/how-amsi-helps\nauthor: Bhabesh Raj\ndate: 2020-09-14\nmodified: 2022-12-07\ntags:\n    - attack.execution\n    - attack.t1059\nlogsource:\n    product: windows\n    service: windefend\ndetection:\n    selection:\n        EventID: 1116 # The antimalware platform detected malware or other potentially unwanted software.\n        SourceName: 'AMSI'\n    condition: selection\nfalsepositives:\n    - Unlikely\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1059","id":"T1059","name":"Command and Scripting Interpreter","page":"techniques/enterprise/T1059/"}],"data_path":"data/detection-rules/ea9bf0fa-edec-4fb8-8b78-b119f2528186.json","kind":"sigma"}