let allowed_auth_f = dynamic(['duo_push', 'duo_mobile_passcode']);
CiscoDuo
| where EventType =~ 'authentication'
| where EventResult =~ 'success'
| where AuthFactor !in~ (allowed_auth_f)
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = DstUserName
id: 16c91a2c-17ad-4985-a9ad-4a4f1cb11830
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoDuoSecurity/Analytic Rules/CiscoDuoUnexpectedAuthFactor.yaml
entityMappings:
- fieldMappings:
- identifier: Address
columnName: IPCustomEntity
entityType: IP
- fieldMappings:
- identifier: Name
columnName: AccountCustomEntity
entityType: Account
requiredDataConnectors:
- dataTypes:
- CiscoDuo
connectorId: CiscoDuoSecurity
queryFrequency: 1h
queryPeriod: 1h
status: Available
query: |
let allowed_auth_f = dynamic(['duo_push', 'duo_mobile_passcode']);
CiscoDuo
| where EventType =~ 'authentication'
| where EventResult =~ 'success'
| where AuthFactor !in~ (allowed_auth_f)
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = DstUserName
name: Cisco Duo - Unexpected authentication factor
kind: Scheduled
tactics:
- InitialAccess
severity: Medium
relevantTechniques:
- T1078
triggerThreshold: 0
version: 1.0.0
description: |
'Detects when unexpected authentication factor used.'
