{"id":"407aecb1-e762-4acf-8c7b-d087bcff3bb6","title":"Credential Manager Access By Uncommon Applications","description":"Detects suspicious processes based on name and location that access the windows credential manager and vault.\nWhich can be a sign of credential stealing. Example case would be usage of mimikatz \"dpapi::cred\" function\n","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2022-10-11","modified":"2024-07-29","tags":["attack.t1003","attack.credential-access"],"technique_ids":["T1003"],"logsource":{"category":"file_access","product":"windows","definition":"Requirements: Microsoft-Windows-Kernel-File ETW provider"},"falsepositives":["Legitimate software installed by the users for example in the \"AppData\" directory may access these files (for any reason)."],"references":["https://hunter2.gitbook.io/darthsidious/privilege-escalation/mimikatz","https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/"],"source_path":"rules/windows/file/file_access/file_access_win_susp_credential_manager_access.yml","source_sha256":"52ca57ffea329745c5bebcb6f41c57f4b15ea27faa98789f5691503a3ee4b06e","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/file/file_access/file_access_win_susp_credential_manager_access.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Credential Manager Access By Uncommon Applications\nid: 407aecb1-e762-4acf-8c7b-d087bcff3bb6\nstatus: test\ndescription: |\n    Detects suspicious processes based on name and location that access the windows credential manager and vault.\n    Which can be a sign of credential stealing. Example case would be usage of mimikatz \"dpapi::cred\" function\nreferences:\n    - https://hunter2.gitbook.io/darthsidious/privilege-escalation/mimikatz\n    - https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-10-11\nmodified: 2024-07-29\ntags:\n    - attack.t1003\n    - attack.credential-access\nlogsource:\n    category: file_access\n    product: windows\n    definition: 'Requirements: Microsoft-Windows-Kernel-File ETW provider'\ndetection:\n    selection:\n        FileName|contains:\n            - '\\AppData\\Local\\Microsoft\\Credentials\\'\n            - '\\AppData\\Roaming\\Microsoft\\Credentials\\'\n            - '\\AppData\\Local\\Microsoft\\Vault\\'\n            - '\\ProgramData\\Microsoft\\Vault\\'\n    filter_system_folders:\n        Image|startswith:\n            - 'C:\\Program Files\\'\n            - 'C:\\Program Files (x86)\\'\n            - 'C:\\Windows\\system32\\'\n            - 'C:\\Windows\\SysWOW64\\'\n    condition: selection and not 1 of filter_*\nfalsepositives:\n    - Legitimate software installed by the users for example in the \"AppData\" directory may access these files (for any reason).\n# Increase level after false positives filters are good enough\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1003","id":"T1003","name":"OS Credential Dumping","page":"techniques/enterprise/T1003/"}],"data_path":"data/detection-rules/407aecb1-e762-4acf-8c7b-d087bcff3bb6.json","kind":"sigma"}