{"id":"a5c7a43f-6009-4a8c-80c5-32abf1c53ecc","title":"Microsoft Office Protected View Disabled","description":"Detects changes to Microsoft Office protected view registry keys with which the attacker disables this feature.","author":"frack113, Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2021-06-08","modified":"2023-08-17","tags":["attack.defense-impairment","attack.t1685"],"technique_ids":["T1685"],"logsource":{"product":"windows","category":"registry_set"},"falsepositives":["Unlikely"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md","https://unit42.paloaltonetworks.com/unit42-gorgon-group-slithering-nation-state-cybercrime/","https://yoroi.company/research/cyber-criminal-espionage-operation-insists-on-italian-manufacturing/","https://admx.help/HKCU/software/policies/microsoft/office/16.0/excel/security/protectedview"],"source_path":"rules/windows/registry/registry_set/registry_set_office_disable_protected_view_features.yml","source_sha256":"87002ec183943d67c2b490d3146839acfe34e6d226d95afd90826c6273ab0c0d","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/registry/registry_set/registry_set_office_disable_protected_view_features.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Microsoft Office Protected View Disabled\nid: a5c7a43f-6009-4a8c-80c5-32abf1c53ecc\nrelated:\n    - id: 7c637634-c95d-4bbf-b26c-a82510874b34\n      type: obsolete\nstatus: test\ndescription: Detects changes to Microsoft Office protected view registry keys with which the attacker disables this feature.\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md\n    - https://unit42.paloaltonetworks.com/unit42-gorgon-group-slithering-nation-state-cybercrime/\n    - https://yoroi.company/research/cyber-criminal-espionage-operation-insists-on-italian-manufacturing/\n    - https://admx.help/HKCU/software/policies/microsoft/office/16.0/excel/security/protectedview\nauthor: frack113, Nasreddine Bencherchali (Nextron Systems)\ndate: 2021-06-08\nmodified: 2023-08-17\ntags:\n    - attack.defense-impairment\n    - attack.t1685\nlogsource:\n    product: windows\n    category: registry_set\ndetection:\n    selection_path:\n        TargetObject|contains|all:\n            - '\\SOFTWARE\\Microsoft\\Office\\'\n            - '\\Security\\ProtectedView\\'\n    selection_values_1:\n        Details: 'DWORD (0x00000001)'\n        TargetObject|endswith:\n            - '\\DisableAttachementsInPV' # Turn off Protected View for attachments opened from Outlook\n            - '\\DisableInternetFilesInPV' # Turn off Protected View for files downloaded from Internet zone\n            - '\\DisableIntranetCheck' # Turn off Protected View for file located in UNC paths\n            - '\\DisableUnsafeLocationsInPV' # Turn off Protected View for unsafe locations\n    selection_values_0:\n        Details: 'DWORD (0x00000000)'\n        TargetObject|endswith:\n            - '\\enabledatabasefileprotectedview'\n            - '\\enableforeigntextfileprotectedview'\n    condition: selection_path and 1 of selection_values_*\nfalsepositives:\n    - Unlikely\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1685","id":"T1685","name":"Disable or Modify Tools","page":"techniques/enterprise/T1685/"}],"data_path":"data/detection-rules/a5c7a43f-6009-4a8c-80c5-32abf1c53ecc.json","kind":"sigma"}