{"id":"60f6535a-760f-42a9-be3f-c9a0a025906e","title":"Use of Legacy Authentication Protocols","description":"Alert on when legacy authentication has been used on an account","author":"Yochana Henderson, '@Yochana-H'","status":"test","level":"high","date":"2022-06-17","modified":"","tags":["attack.privilege-escalation","attack.persistence","attack.initial-access","attack.credential-access","attack.stealth","attack.t1078.004","attack.t1110"],"technique_ids":["T1078.004","T1110"],"logsource":{"product":"azure","service":"signinlogs"},"falsepositives":["User has been put in acception group so they can use legacy authentication"],"references":["https://learn.microsoft.com/en-gb/entra/architecture/security-operations-privileged-accounts"],"source_path":"rules/cloud/azure/signin_logs/azure_legacy_authentication_protocols.yml","source_sha256":"cc6acbb1bec5df7c60bdbe7a5b13df11f7b231b972c0fcadf2a0e5f9fef038ff","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/cloud/azure/signin_logs/azure_legacy_authentication_protocols.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Use of Legacy Authentication Protocols\nid: 60f6535a-760f-42a9-be3f-c9a0a025906e\nstatus: test\ndescription: Alert on when legacy authentication has been used on an account\nreferences:\n    - https://learn.microsoft.com/en-gb/entra/architecture/security-operations-privileged-accounts\nauthor: Yochana Henderson, '@Yochana-H'\ndate: 2022-06-17\ntags:\n    - attack.privilege-escalation\n    - attack.persistence\n    - attack.initial-access\n    - attack.credential-access\n    - attack.stealth\n    - attack.t1078.004\n    - attack.t1110\nlogsource:\n    product: azure\n    service: signinlogs\ndetection:\n    selection:\n        ActivityDetails: Sign-ins\n        ClientApp:\n            - Other client\n            - IMAP\n            - POP3\n            - MAPI\n            - SMTP\n            - Exchange ActiveSync\n            - Exchange Web Services\n        Username: 'UPN'\n    condition: selection\nfalsepositives:\n    - User has been put in acception group so they can use legacy authentication\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1078.004","id":"T1078.004","name":"Cloud Accounts","page":"techniques/enterprise/T1078.004/"},{"key":"enterprise/T1110","id":"T1110","name":"Brute Force","page":"techniques/enterprise/T1110/"}],"data_path":"data/detection-rules/60f6535a-760f-42a9-be3f-c9a0a025906e.json","kind":"sigma"}