Darktrace Model Alert

DarktraceModelAlerts_CL
| where TimeGenerated >= ago(5m)
| extend SentinelSeverity = case(
compliance == true, "Informational",
category == "Informational", "Low",
category == "Suspicious", "Medium",
category == "Critical", "High",
"Informational")
| extend ProviderName = "Darktrace"
| mv-apply item = mitreTechniques on (
    extend techniqueId = tostring(item.techniqueId)
    | summarize techniqueIdArray = make_list(techniqueId, 5)
)

relevantTechniques:
- T1190
- T1059
- T1021
- T1071
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: false
    lookbackDuration: PT5H
    matchingMethod: AllEntities
    enabled: false
  createIncident: false
customDetails:
  DeviceCredentials: deviceCredentials
  Compliance: compliance
  CustomLabel: customLabel
  Category: category
  DeviceHostname: deviceHostname
  Score: score
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: accountName
    identifier: FullName
- entityType: IP
  fieldMappings:
  - columnName: sourceIp
    identifier: Address
- entityType: IP
  fieldMappings:
  - columnName: destIp
    identifier: Address
- entityType: Host
  fieldMappings:
  - columnName: destHost
    identifier: HostName
- entityType: Host
  fieldMappings:
  - columnName: sourceHost
    identifier: HostName
id: 9392a06f-63a4-4a5d-8ca3-647064b13c28
severity: High
description: |
  This query searches for Darktrace model alerts and creates a Microsoft Sentinel alert
  from each matching event. Edit this analytic rule if you would like it to create
  Microsoft Sentinel incidents.
alertDetailsOverride:
  alertSeverityColumnName: SentinelSeverity
  alertDescriptionFormat: '{{message}}'
  alertDynamicProperties:
  - value: alertUrl
    alertProperty: AlertLink
  - value: darktraceProduct
    alertProperty: ProductName
  - value: ProviderName
    alertProperty: ProviderName
  - value: techniqueIdArray
    alertProperty: Techniques
  alertDisplayNameFormat: 'Darktrace Model Alert: {{modelName}}  '
query: |
  DarktraceModelAlerts_CL
  | where TimeGenerated >= ago(5m)
  | extend SentinelSeverity = case(
  compliance == true, "Informational",
  category == "Informational", "Low",
  category == "Suspicious", "Medium",
  category == "Critical", "High",
  "Informational")
  | extend ProviderName = "Darktrace"
  | mv-apply item = mitreTechniques on (
      extend techniqueId = tostring(item.techniqueId)
      | summarize techniqueIdArray = make_list(techniqueId, 5)
  )
requiredDataConnectors:
- connectorId: DarktraceActiveAISecurityPlatform
  dataTypes:
  - DarktraceModelAlerts_CL
version: 1.1.0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Darktrace/Analytic%20Rules/DarktraceModelAlert.yaml
name: Darktrace Model Alert
tactics:
- InitialAccess
- Execution
- LateralMovement
- CommandAndControl
kind: NRT
eventGroupingSettings:
  aggregationKind: AlertPerResult

{
  "$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/9392a06f-63a4-4a5d-8ca3-647064b13c28')]",
      "kind": "NRT",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9392a06f-63a4-4a5d-8ca3-647064b13c28')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "{{message}}",
          "alertDisplayNameFormat": "Darktrace Model Alert: {{modelName}}  ",
          "alertDynamicProperties": [
            {
              "alertProperty": "AlertLink",
              "value": "alertUrl"
            },
            {
              "alertProperty": "ProductName",
              "value": "darktraceProduct"
            },
            {
              "alertProperty": "ProviderName",
              "value": "ProviderName"
            },
            {
              "alertProperty": "Techniques",
              "value": "techniqueIdArray"
            }
          ],
          "alertSeverityColumnName": "SentinelSeverity"
        },
        "alertRuleTemplateName": "9392a06f-63a4-4a5d-8ca3-647064b13c28",
        "customDetails": {
          "Category": "category",
          "Compliance": "compliance",
          "CustomLabel": "customLabel",
          "DeviceCredentials": "deviceCredentials",
          "DeviceHostname": "deviceHostname",
          "Score": "score"
        },
        "description": "This query searches for Darktrace model alerts and creates a Microsoft Sentinel alert\nfrom each matching event. Edit this analytic rule if you would like it to create\nMicrosoft Sentinel incidents.\n",
        "displayName": "Darktrace Model Alert",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "accountName",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "sourceIp",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "destIp",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "destHost",
                "identifier": "HostName"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "sourceHost",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": false,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Darktrace/Analytic%20Rules/DarktraceModelAlert.yaml",
        "query": "DarktraceModelAlerts_CL\n| where TimeGenerated >= ago(5m)\n| extend SentinelSeverity = case(\ncompliance == true, \"Informational\",\ncategory == \"Informational\", \"Low\",\ncategory == \"Suspicious\", \"Medium\",\ncategory == \"Critical\", \"High\",\n\"Informational\")\n| extend ProviderName = \"Darktrace\"\n| mv-apply item = mitreTechniques on (\n    extend techniqueId = tostring(item.techniqueId)\n    | summarize techniqueIdArray = make_list(techniqueId, 5)\n)\n",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "Execution",
          "InitialAccess",
          "LateralMovement"
        ],
        "techniques": [
          "T1021",
          "T1059",
          "T1071",
          "T1190"
        ],
        "templateVersion": "1.1.0"
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}