Dataverse - TI map URL to DataverseActivity

let dt_lookBack = 1h;
let ioc_lookBack = 14d;
ThreatIntelligenceIndicator
| where TimeGenerated >= ago(ioc_lookBack) and ExpirationDateTime > now()
| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
| where Active == true
| where isnotempty(Url)
| join kind=innerunique (
    DataverseActivity
    | where TimeGenerated >= ago(dt_lookBack)
    | where Message in ("Create", "Update")
    | where isnotempty(Fields) and Fields has "http"
    | extend
        ExtractedUrls = extract_all("(http[s]?://(?:[a-zA-Z\\.-]|[0-9])+)", tostring(Fields)),
        DataverseActivity_TimeGenerated = TimeGenerated
    | mv-expand Url = ExtractedUrls
    | project
        DataverseActivity_TimeGenerated,
        tostring(Url),
        UserId,
        ClientIp,
        InstanceUrl,
        EntityName
    )
    on Url
| where DataverseActivity_TimeGenerated < ExpirationDateTime
| summarize DataverseActivity_TimeGenerated  = arg_max(DataverseActivity_TimeGenerated, *) by IndicatorId, Url
| extend
    CloudAppId = int(32780),
    AccountName = tostring(split(UserId, '@')[0]),
    UPNSuffix = tostring(split(UserId, '@')[1])
| project
    DataverseActivity_TimeGenerated,
    Description,
    ActivityGroupNames,
    IndicatorId,
    ThreatType,
    ExpirationDateTime,
    ConfidenceScore,
    UserId,
    ClientIp,
    InstanceUrl,
    CloudAppId,
    AccountName,
    UPNSuffix,
    Url

entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: AccountName
  - identifier: UPNSuffix
    columnName: UPNSuffix
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: ClientIp
- entityType: URL
  fieldMappings:
  - identifier: Url
    columnName: Url
- entityType: CloudApplication
  fieldMappings:
  - identifier: AppId
    columnName: CloudAppId
  - identifier: InstanceName
    columnName: InstanceUrl
queryFrequency: 1h
name: Dataverse - TI map URL to DataverseActivity
alertDetailsOverride:
  alertDisplayNameFormat: Dataverse - TI match on URL in {{InstanceUrl}}
  alertDescriptionFormat: Malicous IP {{Url}} was found in {{InstanceUrl}}. Associated user is {{UserId}}
kind: Scheduled
tactics:
- InitialAccess
- Execution
- Persistence
triggerThreshold: 0
query: |
  let dt_lookBack = 1h;
  let ioc_lookBack = 14d;
  ThreatIntelligenceIndicator
  | where TimeGenerated >= ago(ioc_lookBack) and ExpirationDateTime > now()
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
  | where Active == true
  | where isnotempty(Url)
  | join kind=innerunique (
      DataverseActivity
      | where TimeGenerated >= ago(dt_lookBack)
      | where Message in ("Create", "Update")
      | where isnotempty(Fields) and Fields has "http"
      | extend
          ExtractedUrls = extract_all("(http[s]?://(?:[a-zA-Z\\.-]|[0-9])+)", tostring(Fields)),
          DataverseActivity_TimeGenerated = TimeGenerated
      | mv-expand Url = ExtractedUrls
      | project
          DataverseActivity_TimeGenerated,
          tostring(Url),
          UserId,
          ClientIp,
          InstanceUrl,
          EntityName
      )
      on Url
  | where DataverseActivity_TimeGenerated < ExpirationDateTime
  | summarize DataverseActivity_TimeGenerated  = arg_max(DataverseActivity_TimeGenerated, *) by IndicatorId, Url
  | extend
      CloudAppId = int(32780),
      AccountName = tostring(split(UserId, '@')[0]),
      UPNSuffix = tostring(split(UserId, '@')[1])
  | project
      DataverseActivity_TimeGenerated,
      Description,
      ActivityGroupNames,
      IndicatorId,
      ThreatType,
      ExpirationDateTime,
      ConfidenceScore,
      UserId,
      ClientIp,
      InstanceUrl,
      CloudAppId,
      AccountName,
      UPNSuffix,
      Url  
relevantTechniques:
- T1566
- T1456
- T1474
- T0819
- T0865
- T0862
- T0863
- T1204
- T1574
- T0873
triggerOperator: gt
queryPeriod: 14d
eventGroupingSettings:
  aggregationKind: AlertPerResult
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Business Applications/Analytic Rules/Dataverse - TI map URL to DataverseActivity.yaml
severity: Medium
status: Available
id: d88a0e22-3b6a-40c2-af28-c064b44d03b7
requiredDataConnectors:
- connectorId: Dataverse
  dataTypes:
  - DataverseActivity
- connectorId: ThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: ThreatIntelligenceTaxii
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: MicrosoftDefenderThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: ThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: ThreatIntelligenceTaxii
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: MicrosoftDefenderThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
version: 3.2.0
description: Identifies a match in DataverseActivity from any URL IOC from Microsoft Sentinel Threat Intelligence.

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/d88a0e22-3b6a-40c2-af28-c064b44d03b7')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/d88a0e22-3b6a-40c2-af28-c064b44d03b7')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "Malicous IP {{Url}} was found in {{InstanceUrl}}. Associated user is {{UserId}}",
          "alertDisplayNameFormat": "Dataverse - TI match on URL in {{InstanceUrl}}"
        },
        "alertRuleTemplateName": "d88a0e22-3b6a-40c2-af28-c064b44d03b7",
        "customDetails": null,
        "description": "Identifies a match in DataverseActivity from any URL IOC from Microsoft Sentinel Threat Intelligence.",
        "displayName": "Dataverse - TI map URL to DataverseActivity",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "UPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "ClientIp",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "Url",
                "identifier": "Url"
              }
            ]
          },
          {
            "entityType": "CloudApplication",
            "fieldMappings": [
              {
                "columnName": "CloudAppId",
                "identifier": "AppId"
              },
              {
                "columnName": "InstanceUrl",
                "identifier": "InstanceName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Business Applications/Analytic Rules/Dataverse - TI map URL to DataverseActivity.yaml",
        "query": "let dt_lookBack = 1h;\nlet ioc_lookBack = 14d;\nThreatIntelligenceIndicator\n| where TimeGenerated >= ago(ioc_lookBack) and ExpirationDateTime > now()\n| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId\n| where Active == true\n| where isnotempty(Url)\n| join kind=innerunique (\n    DataverseActivity\n    | where TimeGenerated >= ago(dt_lookBack)\n    | where Message in (\"Create\", \"Update\")\n    | where isnotempty(Fields) and Fields has \"http\"\n    | extend\n        ExtractedUrls = extract_all(\"(http[s]?://(?:[a-zA-Z\\\\.-]|[0-9])+)\", tostring(Fields)),\n        DataverseActivity_TimeGenerated = TimeGenerated\n    | mv-expand Url = ExtractedUrls\n    | project\n        DataverseActivity_TimeGenerated,\n        tostring(Url),\n        UserId,\n        ClientIp,\n        InstanceUrl,\n        EntityName\n    )\n    on Url\n| where DataverseActivity_TimeGenerated < ExpirationDateTime\n| summarize DataverseActivity_TimeGenerated  = arg_max(DataverseActivity_TimeGenerated, *) by IndicatorId, Url\n| extend\n    CloudAppId = int(32780),\n    AccountName = tostring(split(UserId, '@')[0]),\n    UPNSuffix = tostring(split(UserId, '@')[1])\n| project\n    DataverseActivity_TimeGenerated,\n    Description,\n    ActivityGroupNames,\n    IndicatorId,\n    ThreatType,\n    ExpirationDateTime,\n    ConfidenceScore,\n    UserId,\n    ClientIp,\n    InstanceUrl,\n    CloudAppId,\n    AccountName,\n    UPNSuffix,\n    Url\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution",
          "InitialAccess",
          "Persistence"
        ],
        "techniques": [
          "T1204",
          "T1566",
          "T1574"
        ],
        "templateVersion": "3.2.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}