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

severity: High
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Claroty/Analytic Rules/ClarotyMultipleFailedLoginsSameDst.yaml
id: 1c2310ef-19bf-4caf-b2b0-a4c983932fa5
entityMappings:
- fieldMappings:
  - identifier: DistinguishedName
    columnName: SGCustomEntity
  entityType: SecurityGroup
kind: Scheduled
status: Available
tactics:
- InitialAccess
queryFrequency: 1h
requiredDataConnectors:
- connectorId: CefAma
  dataTypes:
  - CommonSecurityLog
relevantTechniques:
- T1190
- T1133
version: 1.0.3
description: |
    'Detects multiple failed logins to same destinations.'
triggerThreshold: 0
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  
queryPeriod: 1h
name: Claroty - Multiple failed logins to same destinations

ARM