VTI - High Severity Domain Collision Detection

Back


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

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

ARM