{"id":"67d5f8fc-8325-44e4-8f5f-7c0ac07cb5ae","title":"Measurable Increase Of Successful Authentications","description":"Detects when successful sign-ins increased by 10% or greater.","author":"Mark Morowczynski '@markmorow', MikeDuddington, '@dudders1', Tim Shelton","status":"test","level":"low","date":"2022-08-11","modified":"2022-08-18","tags":["attack.privilege-escalation","attack.persistence","attack.initial-access","attack.stealth","attack.t1078"],"technique_ids":["T1078"],"logsource":{"product":"azure","service":"signinlogs"},"falsepositives":["Increase of users in the environment"],"references":["https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#monitoring-for-successful-unusual-sign-ins"],"source_path":"rules/cloud/azure/signin_logs/azure_ad_auth_sucess_increase.yml","source_sha256":"0901851dadde50e2796ecb449507b8d69030fadbd664512f4feb6e384b51bf4f","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/cloud/azure/signin_logs/azure_ad_auth_sucess_increase.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Measurable Increase Of Successful Authentications\nid: 67d5f8fc-8325-44e4-8f5f-7c0ac07cb5ae\nstatus: test\ndescription: Detects when successful sign-ins increased by 10% or greater.\nreferences:\n    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#monitoring-for-successful-unusual-sign-ins\nauthor: Mark Morowczynski '@markmorow', MikeDuddington, '@dudders1', Tim Shelton\ndate: 2022-08-11\nmodified: 2022-08-18\ntags:\n    - attack.privilege-escalation\n    - attack.persistence\n    - attack.initial-access\n    - attack.stealth\n    - attack.t1078\nlogsource:\n    product: azure\n    service: signinlogs\ndetection:\n    selection:\n        Status: Success\n        Count: \"<10%\"\n    condition: selection\nfalsepositives:\n    - Increase of users in the environment\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1078","id":"T1078","name":"Valid Accounts","page":"techniques/enterprise/T1078/"}],"data_path":"data/detection-rules/67d5f8fc-8325-44e4-8f5f-7c0ac07cb5ae.json","kind":"sigma"}