Claroty - Critical baseline deviation

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Id	9a8b4321-e2be-449b-8227-a78227441b2a
Rulename	Claroty - Critical baseline deviation
Description	Detects when critical deviation from baseline occurs.
Severity	High
Tactics	Impact
Techniques	T1529
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/ClarotyCriticalBaselineDeviation.yaml
Version	1.0.3
Arm template	9a8b4321-e2be-449b-8227-a78227441b2a.json

KQL

ClarotyEvent
| where EventOriginalType has 'Baseline Deviation' or EventType has 'Baseline Deviation'
| where EventSeverity == '5'
| project TimeGenerated, DstIpAddr
| extend IPCustomEntity = DstIpAddr

YAML

relevantTechniques:
- T1529
queryPeriod: 1h
triggerOperator: gt
version: 1.0.3
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Claroty/Analytic Rules/ClarotyCriticalBaselineDeviation.yaml
description: |
    'Detects when critical deviation from baseline occurs.'
tactics:
- Impact
severity: High
status: Available
kind: Scheduled
triggerThreshold: 0
queryFrequency: 1h
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: CefAma
entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
id: 9a8b4321-e2be-449b-8227-a78227441b2a
query: |
  ClarotyEvent
  | where EventOriginalType has 'Baseline Deviation' or EventType has 'Baseline Deviation'
  | where EventSeverity == '5'
  | project TimeGenerated, DstIpAddr
  | extend IPCustomEntity = DstIpAddr  
name: Claroty - Critical baseline deviation

ARM