{"id":"db809f10-56ce-4420-8c86-d6a7d793c79c","title":"Potential Defense Evasion Via Raw Disk Access By Uncommon Tools","description":"Detects raw disk access using uncommon tools or tools that are located in suspicious locations (heavy filtering is required), which could indicate possible defense evasion attempts","author":"Teymur Kheirkhabarov, oscd.community","status":"test","level":"low","date":"2019-10-22","modified":"2025-12-03","tags":["attack.stealth","attack.t1006"],"technique_ids":["T1006"],"logsource":{"product":"windows","category":"raw_access_thread"},"falsepositives":["Likely"],"references":["https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment"],"source_path":"rules/windows/raw_access_thread/raw_access_thread_susp_disk_access_using_uncommon_tools.yml","source_sha256":"4036d2a68c163f608433bc050b413f20527a16215766077e762ddd3a47e650ac","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/raw_access_thread/raw_access_thread_susp_disk_access_using_uncommon_tools.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential Defense Evasion Via Raw Disk Access By Uncommon Tools\nid: db809f10-56ce-4420-8c86-d6a7d793c79c\nstatus: test\ndescription: Detects raw disk access using uncommon tools or tools that are located in suspicious locations (heavy filtering is required), which could indicate possible defense evasion attempts\nreferences:\n    - https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment\nauthor: Teymur Kheirkhabarov, oscd.community\ndate: 2019-10-22\nmodified: 2025-12-03\ntags:\n    - attack.stealth\n    - attack.t1006\nlogsource:\n    product: windows\n    category: raw_access_thread\ndetection:\n    filter_main_floppy:\n        Device|contains: floppy\n    filter_main_generic:\n        Image|startswith:\n            - 'C:\\$WINDOWS.~BT\\'\n            - 'C:\\Program Files (x86)\\'\n            - 'C:\\Program Files\\'\n            - 'C:\\Windows\\CCM\\'\n            - 'C:\\Windows\\explorer.exe'\n            - 'C:\\Windows\\servicing\\'\n            - 'C:\\Windows\\SoftwareDistribution\\'\n            - 'C:\\Windows\\System32\\'\n            - 'C:\\Windows\\SystemApps\\'\n            - 'C:\\Windows\\SysWOW64\\'\n            - 'C:\\Windows\\uus\\'\n            - 'C:\\Windows\\WinSxS\\'\n    filter_main_system_images:\n        Image:\n            - 'Registry'\n            - 'System'\n    filter_main_windefender:\n        Image|startswith: 'C:\\ProgramData\\Microsoft\\Windows Defender\\Platform\\'\n        Image|endswith:\n            - '\\MsMpEng.exe'\n            - '\\MpDefenderCoreService.exe'\n    filter_main_microsoft_appdata:\n        Image|startswith: 'C:\\Users\\'\n        Image|contains|all:\n            - '\\AppData\\'\n            - '\\Microsoft\\'\n    filter_main_ssd_nvme:\n        Image|startswith: 'C:\\Windows\\Temp\\'\n        Image|endswith:\n            - '\\Executables\\SSDUpdate.exe'\n            - '\\HostMetadata\\NVMEHostmetadata.exe'\n    filter_main_null:\n        Image: null\n    filter_main_systemsettings:\n        Image: 'C:\\Windows\\ImmersiveControlPanel\\SystemSettings.exe'\n    filter_main_update:\n        Image|startswith: 'C:\\$WinREAgent\\Scratch\\'\n    filter_optional_github_desktop:\n        Image|startswith: 'C:\\Users\\'\n        Image|contains: '\\AppData\\Local\\GitHubDesktop\\app-'\n        Image|endswith: '\\resources\\app\\git\\mingw64\\bin\\git.exe'\n    filter_optional_nextron:\n        Image|startswith: 'C:\\Windows\\Temp\\asgard2-agent\\'\n        Image|endswith: '\\thor.exe'\n    filter_optional_Keybase:\n        Image|startswith: 'C:\\Users\\'\n        Image|contains: '\\AppData\\Local\\Keybase\\upd.exe'\n    condition: not 1 of filter_main_* and not 1 of filter_optional_*\nfalsepositives:\n    - Likely\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1006","id":"T1006","name":"Direct Volume Access","page":"techniques/enterprise/T1006/"}],"data_path":"data/detection-rules/db809f10-56ce-4420-8c86-d6a7d793c79c.json","kind":"sigma"}