Google Threat Intelligence - Threat Hunting Url

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Id	89290690-54c4-4196-91c5-d32b1df5d873
Rulename	Google Threat Intelligence - Threat Hunting Url
Description	Google Threat Intelligence Url correlation.
Severity	Medium
Tactics	InitialAccess
Techniques	T1566
Required data connectors	ThreatIntelligence
Kind	Scheduled
Query frequency	30m
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Google Threat Intelligence/Analytic Rules/ThreatHunting/ThreatHuntUrl.yaml
Version	1.0.0
Arm template	89290690-54c4-4196-91c5-d32b1df5d873.json

KQL

let ioc_lookBack = 1d;
_Im_WebSession
| where isnotempty(Url)
| extend lowerUrl=tolower(Url)
| join kind=inner (
ThreatIntelIndicators
| where ObservableKey == 'url:value'
| where isnotempty(ObservableValue)
| where SourceSystem == "Google Threat Intelligence"
| where TimeGenerated >= ago(ioc_lookBack)
| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
| where IsActive == true and (isnull(ValidUntil) or ValidUntil > now())
| extend lowerUrl=tolower(ObservableValue)
) on lowerUrl
| project Url=ObservableValue, Description=Data.description, Type, TimeGenerated

YAML

version: 1.0.0
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Google Threat Intelligence/Analytic Rules/ThreatHunting/ThreatHuntUrl.yaml
description: |
    'Google Threat Intelligence Url correlation.'
alertDetailsOverride:
  alertDisplayNameFormat: Google Threat Intelligence Match
  alertDescriptionFormat: Correlation found from the {{Type}} table.
queryFrequency: 30m
name: Google Threat Intelligence - Threat Hunting Url
tactics:
- InitialAccess
triggerThreshold: 0
id: 89290690-54c4-4196-91c5-d32b1df5d873
query: |
  let ioc_lookBack = 1d;
  _Im_WebSession
  | where isnotempty(Url)
  | extend lowerUrl=tolower(Url)
  | join kind=inner (
  ThreatIntelIndicators
  | where ObservableKey == 'url:value'
  | where isnotempty(ObservableValue)
  | where SourceSystem == "Google Threat Intelligence"
  | where TimeGenerated >= ago(ioc_lookBack)
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
  | where IsActive == true and (isnull(ValidUntil) or ValidUntil > now())
  | extend lowerUrl=tolower(ObservableValue)
  ) on lowerUrl
  | project Url=ObservableValue, Description=Data.description, Type, TimeGenerated  
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: true
    lookbackDuration: 1h
severity: Medium
eventGroupingSettings:
  aggregationKind: AlertPerResult
queryPeriod: 1d
entityMappings:
- fieldMappings:
  - columnName: Url
    identifier: Url
  entityType: URL
relevantTechniques:
- T1566
kind: Scheduled
requiredDataConnectors:
- connectorId: ThreatIntelligence
  dataTypes:
  - ThreatIntelIndicators

ARM