{"id":"7b449a5e-1db5-4dd0-a2dc-4e3a67282538","title":"Hidden Local User Creation","description":"Detects the creation of a local hidden user account which should not happen for event ID 4720.","author":"Christian Burkard (Nextron Systems)","status":"test","level":"high","date":"2021-05-03","modified":"2024-01-16","tags":["attack.persistence","attack.t1136.001"],"technique_ids":["T1136.001"],"logsource":{"product":"windows","service":"security"},"falsepositives":["Unknown"],"references":["https://twitter.com/SBousseaden/status/1387743867663958021"],"source_path":"rules/windows/builtin/security/win_security_hidden_user_creation.yml","source_sha256":"f455ebd3c6ea873c0e9ac3c059b3a0a62200fea73674ea4080c111b4325846d3","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/builtin/security/win_security_hidden_user_creation.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Hidden Local User Creation\nid: 7b449a5e-1db5-4dd0-a2dc-4e3a67282538\nstatus: test\ndescription: Detects the creation of a local hidden user account which should not happen for event ID 4720.\nreferences:\n    - https://twitter.com/SBousseaden/status/1387743867663958021\nauthor: Christian Burkard (Nextron Systems)\ndate: 2021-05-03\nmodified: 2024-01-16\ntags:\n    - attack.persistence\n    - attack.t1136.001\nlogsource:\n    product: windows\n    service: security\ndetection:\n    selection:\n        EventID: 4720\n        TargetUserName|endswith: '$'\n    filter_main_homegroup:\n        TargetUserName: 'HomeGroupUser$'\n    condition: selection and not 1 of filter_main_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1136.001","id":"T1136.001","name":"Local Account","page":"techniques/enterprise/T1136.001/"}],"data_path":"data/detection-rules/7b449a5e-1db5-4dd0-a2dc-4e3a67282538.json","kind":"sigma"}