{"id":"49329257-089d-46e6-af37-4afce4290685","title":"HackTool - SharpEvtMute DLL Load","description":"Detects the load of EvtMuteHook.dll, a key component of SharpEvtHook, a tool that tampers with the Windows event logs","author":"Florian Roth (Nextron Systems)","status":"test","level":"high","date":"2022-09-07","modified":"2024-11-23","tags":["attack.defense-impairment","attack.t1685.001"],"technique_ids":["T1685.001"],"logsource":{"category":"image_load","product":"windows"},"falsepositives":["Other DLLs with the same Imphash"],"references":["https://github.com/bats3c/EvtMute"],"source_path":"rules/windows/image_load/image_load_hktl_sharpevtmute.yml","source_sha256":"99281e45908d1bf79d3f1b15a2d04714a9f1522a0ce0679a5a10a8b4fbf5085b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/image_load/image_load_hktl_sharpevtmute.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: HackTool - SharpEvtMute DLL Load\nid: 49329257-089d-46e6-af37-4afce4290685\nrelated:\n    - id: bedfc8ad-d1c7-4e37-a20e-e2b0dbee759c # Process Creation\n      type: similar\nstatus: test\ndescription: Detects the load of EvtMuteHook.dll, a key component of SharpEvtHook, a tool that tampers with the Windows event logs\nreferences:\n    - https://github.com/bats3c/EvtMute\nauthor: Florian Roth (Nextron Systems)\ndate: 2022-09-07\nmodified: 2024-11-23\ntags:\n    - attack.defense-impairment\n    - attack.t1685.001\nlogsource:\n    category: image_load\n    product: windows\ndetection:\n    selection:\n        Hashes|contains: 'IMPHASH=330768A4F172E10ACB6287B87289D83B'\n    condition: selection\nfalsepositives:\n    - Other DLLs with the same Imphash\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1685.001","id":"T1685.001","name":"Disable or Modify Windows Event Log","page":"techniques/enterprise/T1685.001/"}],"data_path":"data/detection-rules/49329257-089d-46e6-af37-4afce4290685.json","kind":"sigma"}