Cisco Duo - Multiple user login failures

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Id	034f62b6-df51-49f3-831f-1e4cfd3c40d2
Rulename	Cisco Duo - Multiple user login failures
Description	Detects when multiple user login failures occurs.
Severity	High
Tactics	InitialAccess
Techniques	T1078
Required data connectors	CiscoDuoSecurity
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoDuoSecurity/Analytic Rules/CiscoDuoMultipleUserLoginFailures.yaml
Version	1.0.1
Arm template	034f62b6-df51-49f3-831f-1e4cfd3c40d2.json

KQL

let threshold = 10;
CiscoDuo
| where EventType =~ 'authentication'
| where EventResult in~ ('denied', 'failure')
| summarize count() by DstUserName, bin(TimeGenerated, 10m)
| where count_ > threshold
| extend AccountCustomEntity = DstUserName

YAML

status: Available
queryFrequency: 1h
id: 034f62b6-df51-49f3-831f-1e4cfd3c40d2
tactics:
- InitialAccess
entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
  entityType: Account
requiredDataConnectors:
- connectorId: CiscoDuoSecurity
  dataTypes:
  - CiscoDuo
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoDuoSecurity/Analytic Rules/CiscoDuoMultipleUserLoginFailures.yaml
version: 1.0.1
query: |
  let threshold = 10;
  CiscoDuo
  | where EventType =~ 'authentication'
  | where EventResult in~ ('denied', 'failure')
  | summarize count() by DstUserName, bin(TimeGenerated, 10m)
  | where count_ > threshold
  | extend AccountCustomEntity = DstUserName  
description: |
    'Detects when multiple user login failures occurs.'
relevantTechniques:
- T1078
triggerThreshold: 0
queryPeriod: 1h
triggerOperator: gt
name: Cisco Duo - Multiple user login failures
severity: High
kind: Scheduled

ARM