Create Incidents from IronDefense

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Id	3cf46cb9-99d5-42ee-a43c-7bd88ea394a1
Rulename	Create Incidents from IronDefense
Description	Creates incidents based on behavioral detections from IronDefense.
Severity	Medium
Required data connectors	IronNetIronDefense
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IronNet IronDefense/Analytic Rules/IronDefense_Detection_Query.yaml
Version	1.0.1
Arm template	3cf46cb9-99d5-42ee-a43c-7bd88ea394a1.json

KQL

CommonSecurityLog
| where DeviceProduct == "IronDefense"
| summarize arg_max(TimeGenerated, *) by DeviceCustomString4, DeviceCustomString2
| extend Category = coalesce(column_ifexists("DeviceEventCategory",""),extract(@'cat=([^;]+)(\;|$)', 1, AdditionalExtensions))	
| extend Subcategory = extract(@'subcat=([^;]+)(\;|$)', 1, AdditionalExtensions)
| extend AlertDescription = strcat(Category, ': ', Subcategory)
| extend Status = tostring(DeviceCustomString2)
| extend IronVueUrl = replace(@'\\', @'', tostring(DeviceCustomString3))

YAML

customDetails:
  AlertCreatedTime: TimeGenerated
  AnalystRating: LogSeverity
  IronVueUrl: IronVueUrl
  IronDefenseAlertId: DeviceCustomString4
  IronDefenseStatus: Status
  AnalystSeverity: DeviceCustomString1
description: |
    'Creates incidents based on behavioral detections from IronDefense.'
status: Available
queryPeriod: 5m
severity: Medium
alertDetailsOverride:
  alertDisplayNameFormat: |
        {{Category}}: {{Subcategory}} ({{DeviceCustomString4}})
  alertDescriptionFormat: |
        IronDefense detected suspicious activity on {{TimeGenerated}} and categorized it as "{{AlertDescription}}".  View full details in IronVue: {{IronVueUrl}}
  alertSeverityColumnName: LogSeverity
triggerOperator: gt
kind: Scheduled
triggerThreshold: 0
relevantTechniques: 
version: 1.0.1
name: Create Incidents from IronDefense
eventGroupingSettings:
  aggregationKind: AlertPerResult
queryFrequency: 5m
id: 3cf46cb9-99d5-42ee-a43c-7bd88ea394a1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IronNet IronDefense/Analytic Rules/IronDefense_Detection_Query.yaml
entityMappings:
- fieldMappings:
  - columnName: DestinationIP
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: SourceIP
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: DestinationHostName
    identifier: FullName
  entityType: Host
- fieldMappings:
  - columnName: SourceHostName
    identifier: FullName
  entityType: Host
- fieldMappings:
  - columnName: RequestURL
    identifier: Url
  entityType: URL
tactics: 
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: IronNetIronDefense
query: |
  CommonSecurityLog
  | where DeviceProduct == "IronDefense"
  | summarize arg_max(TimeGenerated, *) by DeviceCustomString4, DeviceCustomString2
  | extend Category = coalesce(column_ifexists("DeviceEventCategory",""),extract(@'cat=([^;]+)(\;|$)', 1, AdditionalExtensions))	
  | extend Subcategory = extract(@'subcat=([^;]+)(\;|$)', 1, AdditionalExtensions)
  | extend AlertDescription = strcat(Category, ': ', Subcategory)
  | extend Status = tostring(DeviceCustomString2)
  | extend IronVueUrl = replace(@'\\', @'', tostring(DeviceCustomString3))

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/3cf46cb9-99d5-42ee-a43c-7bd88ea394a1')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/3cf46cb9-99d5-42ee-a43c-7bd88ea394a1')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "IronDefense detected suspicious activity on {{TimeGenerated}} and categorized it as \"{{AlertDescription}}\".  View full details in IronVue: {{IronVueUrl}}\n",
          "alertDisplayNameFormat": "{{Category}}: {{Subcategory}} ({{DeviceCustomString4}})\n",
          "alertSeverityColumnName": "LogSeverity"
        },
        "alertRuleTemplateName": "3cf46cb9-99d5-42ee-a43c-7bd88ea394a1",
        "customDetails": {
          "AlertCreatedTime": "TimeGenerated",
          "AnalystRating": "LogSeverity",
          "AnalystSeverity": "DeviceCustomString1",
          "IronDefenseAlertId": "DeviceCustomString4",
          "IronDefenseStatus": "Status",
          "IronVueUrl": "IronVueUrl"
        },
        "description": "'Creates incidents based on behavioral detections from IronDefense.'\n",
        "displayName": "Create Incidents from IronDefense",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "DestinationIP",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SourceIP",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DestinationHostName",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "SourceHostName",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "RequestURL",
                "identifier": "Url"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IronNet IronDefense/Analytic Rules/IronDefense_Detection_Query.yaml",
        "query": "CommonSecurityLog\n| where DeviceProduct == \"IronDefense\"\n| summarize arg_max(TimeGenerated, *) by DeviceCustomString4, DeviceCustomString2\n| extend Category = coalesce(column_ifexists(\"DeviceEventCategory\",\"\"),extract(@'cat=([^;]+)(\\;|$)', 1, AdditionalExtensions))\t\n| extend Subcategory = extract(@'subcat=([^;]+)(\\;|$)', 1, AdditionalExtensions)\n| extend AlertDescription = strcat(Category, ': ', Subcategory)\n| extend Status = tostring(DeviceCustomString2)\n| extend IronVueUrl = replace(@'\\\\', @'', tostring(DeviceCustomString3))\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "Medium",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": null,
        "techniques": null,
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}