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

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

ARM