{"id":"e2b5163d-7deb-4566-9af3-40afea6858c3","title":"Certificate Private Key Acquired","description":"Detects when an application acquires a certificate private key","author":"Zach Mathis","status":"test","level":"medium","date":"2023-05-13","modified":"","tags":["attack.credential-access","attack.t1649"],"technique_ids":["T1649"],"logsource":{"product":"windows","service":"capi2","definition":"Requirements: The CAPI2 Operational log needs to be enabled"},"falsepositives":["Legitimate application requesting certificate exports will trigger this. Apply additional filters as needed"],"references":["https://www.splunk.com/en_us/blog/security/breaking-the-chain-defending-against-certificate-services-abuse.html"],"source_path":"rules/windows/builtin/capi2/win_capi2_acquire_certificate_private_key.yml","source_sha256":"354be3ee2cb17757993b1fa9d45cd61dfc5c03f0e099767a8b7a3e7c78b2d6b4","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/builtin/capi2/win_capi2_acquire_certificate_private_key.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Certificate Private Key Acquired\nid: e2b5163d-7deb-4566-9af3-40afea6858c3\nstatus: test\ndescription: Detects when an application acquires a certificate private key\nreferences:\n    - https://www.splunk.com/en_us/blog/security/breaking-the-chain-defending-against-certificate-services-abuse.html\nauthor: Zach Mathis\ndate: 2023-05-13\ntags:\n    - attack.credential-access\n    - attack.t1649\nlogsource:\n    product: windows\n    service: capi2\n    definition: 'Requirements: The CAPI2 Operational log needs to be enabled'\ndetection:\n    selection:\n        EventID: 70 # Acquire Certificate Private Key\n    condition: selection\nfalsepositives:\n    - Legitimate application requesting certificate exports will trigger this. Apply additional filters as needed\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1649","id":"T1649","name":"Steal or Forge Authentication Certificates","page":"techniques/enterprise/T1649/"}],"data_path":"data/detection-rules/e2b5163d-7deb-4566-9af3-40afea6858c3.json","kind":"sigma"}