{"id":"90f342e1-1aaa-4e43-b092-39fda57ed11e","title":"ETW Logging Disabled For rpcrt4.dll","description":"Detects changes to the \"ExtErrorInformation\" key in order to disable ETW logging for rpcrt4.dll","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"low","date":"2022-12-09","modified":"2023-08-17","tags":["attack.persistence","attack.defense-impairment","attack.t1112","attack.t1685"],"technique_ids":["T1112","T1685"],"logsource":{"product":"windows","category":"registry_set"},"falsepositives":["Unknown"],"references":["http://redplait.blogspot.com/2020/07/whats-wrong-with-etw.html"],"source_path":"rules/windows/registry/registry_set/registry_set_rpcrt4_etw_tamper.yml","source_sha256":"dbd920f0f17e766808a378518ce31e08c0ff52abe61853539c8db5cccadd923a","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/registry/registry_set/registry_set_rpcrt4_etw_tamper.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: ETW Logging Disabled For rpcrt4.dll\nid: 90f342e1-1aaa-4e43-b092-39fda57ed11e\nstatus: test\ndescription: Detects changes to the \"ExtErrorInformation\" key in order to disable ETW logging for rpcrt4.dll\nreferences:\n    - http://redplait.blogspot.com/2020/07/whats-wrong-with-etw.html\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-12-09\nmodified: 2023-08-17\ntags:\n    - attack.persistence\n    - attack.defense-impairment\n    - attack.t1112\n    - attack.t1685\nlogsource:\n    product: windows\n    category: registry_set\ndetection:\n    selection:\n        TargetObject|endswith: '\\Microsoft\\Windows NT\\Rpc\\ExtErrorInformation'\n        Details:\n            # This is disabled by default for some reason\n            - 'DWORD (0x00000000)' # Off\n            - 'DWORD (0x00000002)' # Off with exceptions\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1112","id":"T1112","name":"Modify Registry","page":"techniques/enterprise/T1112/"},{"key":"enterprise/T1685","id":"T1685","name":"Disable or Modify Tools","page":"techniques/enterprise/T1685/"}],"data_path":"data/detection-rules/90f342e1-1aaa-4e43-b092-39fda57ed11e.json","kind":"sigma"}