Claroty - Multiple failed logins to same destinations

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Id	1c2310ef-19bf-4caf-b2b0-a4c983932fa5
Rulename	Claroty - Multiple failed logins to same destinations
Description	Detects multiple failed logins to same destinations.
Severity	High
Tactics	InitialAccess
Techniques	T1190 T1133
Required data connectors	CefAma
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/Claroty/Analytic Rules/ClarotyMultipleFailedLoginsSameDst.yaml
Version	1.0.3
Arm template	1c2310ef-19bf-4caf-b2b0-a4c983932fa5.json

KQL

let threshold = 10;
ClarotyEvent
| where EventType has 'Login to SRA'
| where EventType !has 'succeeded'
| extend Site = column_ifexists("site_name","")
| where isnotempty(Site)
| extend SrcUsername = extract(@'User\s(.*?)\sfailed', 1, EventMessage)
| summarize count() by Site, bin(TimeGenerated, 5m)
| where count_ > threshold
| extend SGCustomEntity = Site

YAML

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Claroty/Analytic Rules/ClarotyMultipleFailedLoginsSameDst.yaml
queryPeriod: 1h
kind: Scheduled
name: Claroty - Multiple failed logins to same destinations
status: Available
entityMappings:
- fieldMappings:
  - columnName: SGCustomEntity
    identifier: DistinguishedName
  entityType: SecurityGroup
tactics:
- InitialAccess
description: |
    'Detects multiple failed logins to same destinations.'
severity: High
requiredDataConnectors:
- connectorId: CefAma
  dataTypes:
  - CommonSecurityLog
queryFrequency: 1h
triggerThreshold: 0
version: 1.0.3
query: |
  let threshold = 10;
  ClarotyEvent
  | where EventType has 'Login to SRA'
  | where EventType !has 'succeeded'
  | extend Site = column_ifexists("site_name","")
  | where isnotempty(Site)
  | extend SrcUsername = extract(@'User\s(.*?)\sfailed', 1, EventMessage)
  | summarize count() by Site, bin(TimeGenerated, 5m)
  | where count_ > threshold
  | extend SGCustomEntity = Site  
relevantTechniques:
- T1190
- T1133
id: 1c2310ef-19bf-4caf-b2b0-a4c983932fa5
triggerOperator: gt

ARM