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

requiredDataConnectors:
- dataTypes:
  - CiscoDuo
  connectorId: CiscoDuoSecurity
queryPeriod: 1h
triggerThreshold: 0
queryFrequency: 1h
version: 1.0.1
status: Available
severity: High
description: |
    'Detects when multiple user login failures occurs.'
name: Cisco Duo - Multiple user login failures
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AccountCustomEntity
  entityType: Account
triggerOperator: gt
id: 034f62b6-df51-49f3-831f-1e4cfd3c40d2
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoDuoSecurity/Analytic Rules/CiscoDuoMultipleUserLoginFailures.yaml
tactics:
- InitialAccess
relevantTechniques:
- T1078
kind: Scheduled
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

ARM