{"id":"5df86130-4e95-4a54-90f7-26541b40aec2","title":"Registry Modification to Hidden File Extension","description":"Hides the file extension through modification of the registry","author":"frack113","status":"test","level":"medium","date":"2022-01-22","modified":"2023-08-17","tags":["attack.persistence","attack.t1137"],"technique_ids":["T1137"],"logsource":{"category":"registry_set","product":"windows"},"falsepositives":["Administrative scripts"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-1---modify-registry-of-current-user-profile---cmd","https://unit42.paloaltonetworks.com/ransomware-families/","https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?name=TrojanSpy%3aMSIL%2fHakey.A"],"source_path":"rules/windows/registry/registry_set/registry_set_hidden_extention.yml","source_sha256":"4f85cf8f35a103c6177f2d82e84fe0cb43b592fac321d72b6127f32d93704187","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/registry/registry_set/registry_set_hidden_extention.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Registry Modification to Hidden File Extension\nid: 5df86130-4e95-4a54-90f7-26541b40aec2\nstatus: test\ndescription: Hides the file extension through modification of the registry\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-1---modify-registry-of-current-user-profile---cmd\n    - https://unit42.paloaltonetworks.com/ransomware-families/\n    - https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?name=TrojanSpy%3aMSIL%2fHakey.A\nauthor: frack113\ndate: 2022-01-22\nmodified: 2023-08-17\ntags:\n    - attack.persistence\n    - attack.t1137\nlogsource:\n    category: registry_set\n    product: windows\ndetection:\n    selection_HideFileExt:\n        TargetObject|endswith: '\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced\\HideFileExt'\n        Details: 'DWORD (0x00000001)'\n    selection_Hidden:\n        TargetObject|endswith: '\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced\\Hidden'\n        Details: 'DWORD (0x00000002)'\n    condition: 1 of selection_*\nfalsepositives:\n    - Administrative scripts\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1137","id":"T1137","name":"Office Application Startup","page":"techniques/enterprise/T1137/"}],"data_path":"data/detection-rules/5df86130-4e95-4a54-90f7-26541b40aec2.json","kind":"sigma"}