{"id":"3a8da4e0-36c1-40d2-8b29-b3e890d5172a","title":"NTDS Exfiltration Filename Patterns","description":"Detects creation of files with specific name patterns seen used in various tools that export the NTDS.DIT for exfiltration.","author":"Florian Roth (Nextron Systems)","status":"test","level":"high","date":"2022-03-11","modified":"2023-05-05","tags":["attack.credential-access","attack.t1003.003"],"technique_ids":["T1003.003"],"logsource":{"product":"windows","category":"file_event"},"falsepositives":["Unknown"],"references":["https://github.com/rapid7/metasploit-framework/blob/eb6535009f5fdafa954525687f09294918b5398d/modules/post/windows/gather/ntds_grabber.rb","https://github.com/rapid7/metasploit-framework/blob/eb6535009f5fdafa954525687f09294918b5398d/data/post/powershell/NTDSgrab.ps1","https://github.com/SecureAuthCorp/impacket/blob/7d2991d78836b376452ca58b3d14daa61b67cb40/impacket/examples/secretsdump.py#L2405"],"source_path":"rules/windows/file/file_event/file_event_win_ntds_exfil_tools.yml","source_sha256":"bb32b9c7f9335605634c96a2eb93283b5606324e92b9d85f2de4a03435d66a2f","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/file/file_event/file_event_win_ntds_exfil_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: NTDS Exfiltration Filename Patterns\nid: 3a8da4e0-36c1-40d2-8b29-b3e890d5172a\nstatus: test\ndescription: Detects creation of files with specific name patterns seen used in various tools that export the NTDS.DIT for exfiltration.\nreferences:\n    - https://github.com/rapid7/metasploit-framework/blob/eb6535009f5fdafa954525687f09294918b5398d/modules/post/windows/gather/ntds_grabber.rb\n    - https://github.com/rapid7/metasploit-framework/blob/eb6535009f5fdafa954525687f09294918b5398d/data/post/powershell/NTDSgrab.ps1\n    - https://github.com/SecureAuthCorp/impacket/blob/7d2991d78836b376452ca58b3d14daa61b67cb40/impacket/examples/secretsdump.py#L2405\nauthor: Florian Roth (Nextron Systems)\ndate: 2022-03-11\nmodified: 2023-05-05\ntags:\n    - attack.credential-access\n    - attack.t1003.003\nlogsource:\n    product: windows\n    category: file_event\ndetection:\n    selection:\n        TargetFilename|endswith:\n            - '\\All.cab' # https://github.com/rapid7/metasploit-framework/blob/eb6535009f5fdafa954525687f09294918b5398d/data/post/powershell/NTDSgrab.ps1\n            - '.ntds.cleartext' # https://github.com/SecureAuthCorp/impacket/blob/7d2991d78836b376452ca58b3d14daa61b67cb40/impacket/examples/secretsdump.py#L2405\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1003.003","id":"T1003.003","name":"NTDS","page":"techniques/enterprise/T1003.003/"}],"data_path":"data/detection-rules/3a8da4e0-36c1-40d2-8b29-b3e890d5172a.json","kind":"sigma"}