{"id":"1a5c46e9-f32f-42f7-b2bc-6e9084db7fbf","title":"Trust Access Disable For VBApplications","description":"Detects registry changes to Microsoft Office \"AccessVBOM\" to a value of \"1\" which disables trust access for VBA on the victim machine and lets attackers execute malicious macros without any Microsoft Office warnings.","author":"Trent Liffick (@tliffick), Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2020-05-22","modified":"2023-08-17","tags":["attack.persistence","attack.defense-impairment","attack.t1112"],"technique_ids":["T1112"],"logsource":{"category":"registry_set","product":"windows"},"falsepositives":["Unlikely"],"references":["https://twitter.com/inversecos/status/1494174785621819397","https://www.mcafee.com/blogs/other-blogs/mcafee-labs/zloader-with-a-new-infection-technique/","https://securelist.com/scarcruft-surveilling-north-korean-defectors-and-human-rights-activists/105074/"],"source_path":"rules/windows/registry/registry_set/registry_set_office_access_vbom_tamper.yml","source_sha256":"90810ac623d402354f1f0f5a5f25d67215fbcfea58c7425dc87fe18e6da345fe","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/registry/registry_set/registry_set_office_access_vbom_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: Trust Access Disable For VBApplications\nid: 1a5c46e9-f32f-42f7-b2bc-6e9084db7fbf\nrelated:\n    - id: 9b894e57-033f-46cf-b7fa-a52804181973\n      type: obsolete\nstatus: test\ndescription: Detects registry changes to Microsoft Office \"AccessVBOM\" to a value of \"1\" which disables trust access for VBA on the victim machine and lets attackers execute malicious macros without any Microsoft Office warnings.\nreferences:\n    - https://twitter.com/inversecos/status/1494174785621819397\n    - https://www.mcafee.com/blogs/other-blogs/mcafee-labs/zloader-with-a-new-infection-technique/\n    - https://securelist.com/scarcruft-surveilling-north-korean-defectors-and-human-rights-activists/105074/\nauthor: Trent Liffick (@tliffick), Nasreddine Bencherchali (Nextron Systems)\ndate: 2020-05-22\nmodified: 2023-08-17\ntags:\n    - attack.persistence\n    - attack.defense-impairment\n    - attack.t1112\nlogsource:\n    category: registry_set\n    product: windows\ndetection:\n    selection:\n        TargetObject|endswith: '\\Security\\AccessVBOM'\n        Details: 'DWORD (0x00000001)'\n    condition: selection\nfalsepositives:\n    - Unlikely\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1112","id":"T1112","name":"Modify Registry","page":"techniques/enterprise/T1112/"}],"data_path":"data/detection-rules/1a5c46e9-f32f-42f7-b2bc-6e9084db7fbf.json","kind":"sigma"}