Sensitive Data Discovered in the Last 24 Hours - Customized

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Id	79f296d9-e6e4-45dc-9ca7-1770955435fa
Rulename	Sensitive Data Discovered in the Last 24 Hours - Customized
Description	Customized query used to identify specific classifications and parameters that have been discovered on assets in the last 24 hours by Microsoft Purview. By default, the query identifies Social Security Numbers detected, but the specific classification monitored along with other data fields can be adjusted. A list of supported Microsoft Purview classifications can be found here: https://docs.microsoft.com/azure/purview/supported-classifications
Severity	Informational
Tactics	Discovery
Techniques	T1087
Required data connectors	MicrosoftAzurePurview
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Purview/Analytic Rules/MicrosoftPurviewSensitiveDataDiscoveredCustom.yaml
Version	1.0.1
Arm template	79f296d9-e6e4-45dc-9ca7-1770955435fa.json

KQL

PurviewDataSensitivityLogs
| where Classification contains "Social Security Number"
//| where SourceRegion == "westeurope"
//| where SourceType contains "Amazon"
| where TimeGenerated > ago(24h)

YAML

requiredDataConnectors:
- dataTypes:
  - PurviewDataSensitivityLogs
  connectorId: MicrosoftAzurePurview
triggerThreshold: 0
relevantTechniques:
- T1087
queryPeriod: 1d
version: 1.0.1
id: 79f296d9-e6e4-45dc-9ca7-1770955435fa
alertDetailsOverride:
  alertDisplayNameFormat: Sensitive Data Discovered in the Last 24 Hours by Microsoft Purview
  alertDescriptionFormat: Within the last 24 hours, Microsoft Purview scanned assets that contained classifications. The classifications discovered include {{Classification}}.
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Purview/Analytic Rules/MicrosoftPurviewSensitiveDataDiscoveredCustom.yaml
query: |
  PurviewDataSensitivityLogs
  | where Classification contains "Social Security Number"
  //| where SourceRegion == "westeurope"
  //| where SourceType contains "Amazon"
  | where TimeGenerated > ago(24h)  
customDetails:
  AssetPath: AssetPath
  AssetName: AssetName
  Classification: Classification
  LastScanTime: AssetLastScanTime
  PurviewAccount: PurviewAccountName
  SourceRegion: SourceRegion
entityMappings:
- fieldMappings:
  - identifier: ResourceId
    columnName: SourcePath
  entityType: AzureResource
- fieldMappings:
  - identifier: Name
    columnName: AssetName
  entityType: File
- fieldMappings:
  - identifier: Name
    columnName: PurviewAccountName
  entityType: Account
tactics:
- Discovery
severity: Informational
name: Sensitive Data Discovered in the Last 24 Hours - Customized
queryFrequency: 1d
triggerOperator: gt
kind: Scheduled
description: |
    'Customized query used to identify specific classifications and parameters that have been discovered on assets in the last 24 hours by Microsoft Purview. By default, the query identifies Social Security Numbers detected, but the specific classification monitored along with other data fields can be adjusted. A list of supported Microsoft Purview classifications can be found here: https://docs.microsoft.com/azure/purview/supported-classifications'

ARM

{
  "$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/79f296d9-e6e4-45dc-9ca7-1770955435fa')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/79f296d9-e6e4-45dc-9ca7-1770955435fa')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "Within the last 24 hours, Microsoft Purview scanned assets that contained classifications. The classifications discovered include {{Classification}}.",
          "alertDisplayNameFormat": "Sensitive Data Discovered in the Last 24 Hours by Microsoft Purview"
        },
        "alertRuleTemplateName": "79f296d9-e6e4-45dc-9ca7-1770955435fa",
        "customDetails": {
          "AssetName": "AssetName",
          "AssetPath": "AssetPath",
          "Classification": "Classification",
          "LastScanTime": "AssetLastScanTime",
          "PurviewAccount": "PurviewAccountName",
          "SourceRegion": "SourceRegion"
        },
        "description": "'Customized query used to identify specific classifications and parameters that have been discovered on assets in the last 24 hours by Microsoft Purview. By default, the query identifies Social Security Numbers detected, but the specific classification monitored along with other data fields can be adjusted. A list of supported Microsoft Purview classifications can be found here: https://docs.microsoft.com/azure/purview/supported-classifications'\n",
        "displayName": "Sensitive Data Discovered in the Last 24 Hours - Customized",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "AzureResource",
            "fieldMappings": [
              {
                "columnName": "SourcePath",
                "identifier": "ResourceId"
              }
            ]
          },
          {
            "entityType": "File",
            "fieldMappings": [
              {
                "columnName": "AssetName",
                "identifier": "Name"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "PurviewAccountName",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Purview/Analytic Rules/MicrosoftPurviewSensitiveDataDiscoveredCustom.yaml",
        "query": "PurviewDataSensitivityLogs\n| where Classification contains \"Social Security Number\"\n//| where SourceRegion == \"westeurope\"\n//| where SourceType contains \"Amazon\"\n| where TimeGenerated > ago(24h)\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "Informational",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Discovery"
        ],
        "techniques": [
          "T1087"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}