VTI - High Severity Domain Collision Detection

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Id	7be47078-657a-43cf-9c93-b4705a9f6134
Rulename	VTI - High Severity Domain Collision Detection
Description	This will alert when a collision is detected for EmailUrlInfo events with VTI high severity domain IoCs
Severity	High
Tactics	InitialAccess
Techniques	T1566
Required data connectors	VisaThreatIntelligence
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/Visa Threat Intelligence (VTI)/Analytic Rules/VTIP_high_severity_domain.yaml
Version	1.0.0
Arm template	7be47078-657a-43cf-9c93-b4705a9f6134.json

KQL

EmailUrlInfo
| join kind=inner (VisaThreatIntelligenceIOC_CL  | where IOCType == "domain" and SourceSeverity == "High")
on $left.UrlDomain == $right.Value

YAML

name: VTI - High Severity Domain Collision Detection
incidentConfiguration:
  groupingConfiguration:
    enabled: true
    reopenClosedIncident: false
    lookbackDuration: 1h
    matchingMethod: AllEntities
  createIncident: true
query: |-
  EmailUrlInfo
  | join kind=inner (VisaThreatIntelligenceIOC_CL  | where IOCType == "domain" and SourceSeverity == "High")
  on $left.UrlDomain == $right.Value  
queryPeriod: 1h
triggerOperator: gt
suppressionEnabled: false
tactics:
- InitialAccess
suppressionDuration: 1h
kind: Scheduled
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Visa Threat Intelligence (VTI)/Analytic Rules/VTIP_high_severity_domain.yaml
eventGroupingSettings:
  aggregationKind: SingleAlert
relevantTechniques:
- T1566
id: 7be47078-657a-43cf-9c93-b4705a9f6134
severity: High
requiredDataConnectors:
- connectorId: VisaThreatIntelligence
  dataTypes:
  - VisaThreatIntelligenceIOC_CL
  - EmailUrlInfo
version: 1.0.0
description: This will alert when a collision is detected for EmailUrlInfo events with VTI high severity domain IoCs
entityMappings:
- entityType: URL
  fieldMappings:
  - columnName: Url
    identifier: Url
- entityType: DNS
  fieldMappings:
  - columnName: UrlDomain
    identifier: DomainName
queryFrequency: 1h

ARM