{"id":"39ed3c80-e6a1-431b-9df3-911ac53d08a7","title":"UAC Bypass Using NTFS Reparse Point - Process","description":"Detects the pattern of UAC Bypass using NTFS reparse point and wusa.exe DLL hijacking (UACMe 36)","author":"Christian Burkard (Nextron Systems)","status":"test","level":"high","date":"2021-08-30","modified":"2024-12-01","tags":["attack.privilege-escalation","attack.t1548.002"],"technique_ids":["T1548.002"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://github.com/hfiref0x/UACME"],"source_path":"rules/windows/process_creation/proc_creation_win_uac_bypass_ntfs_reparse_point.yml","source_sha256":"93e6d2afb47b03665744f181e0c350984531a3cd2b072abe86af6c9a86fb9fd0","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_uac_bypass_ntfs_reparse_point.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: UAC Bypass Using NTFS Reparse Point - Process\nid: 39ed3c80-e6a1-431b-9df3-911ac53d08a7\nstatus: test\ndescription: Detects the pattern of UAC Bypass using NTFS reparse point and wusa.exe DLL hijacking (UACMe 36)\nreferences:\n    - https://github.com/hfiref0x/UACME\nauthor: Christian Burkard (Nextron Systems)\ndate: 2021-08-30\nmodified: 2024-12-01\ntags:\n    - attack.privilege-escalation\n    - attack.t1548.002\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection1:\n        CommandLine|startswith: '\"C:\\Windows\\system32\\wusa.exe\"  /quiet C:\\Users\\'\n        CommandLine|endswith: '\\AppData\\Local\\Temp\\update.msu'\n        IntegrityLevel:\n            - 'High'\n            - 'System'\n            - 'S-1-16-16384' # System\n            - 'S-1-16-12288' # High\n    selection2:\n        ParentCommandLine: '\"C:\\Windows\\system32\\dism.exe\" /online /quiet /norestart /add-package /packagepath:\"C:\\Windows\\system32\\pe386\" /ignorecheck'\n        IntegrityLevel:\n            - 'High'\n            - 'System'\n        CommandLine|contains|all:\n            - 'C:\\Users\\'\n            - '\\AppData\\Local\\Temp\\'\n            - '\\dismhost.exe {'\n        Image|endswith: '\\DismHost.exe'\n    condition: 1 of selection*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1548.002","id":"T1548.002","name":"Bypass User Account Control","page":"techniques/enterprise/T1548.002/"}],"data_path":"data/detection-rules/39ed3c80-e6a1-431b-9df3-911ac53d08a7.json","kind":"sigma"}