Create Incidents from IronDefense

Back


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

relevantTechniques: 
name: Create Incidents from IronDefense
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: IronNetIronDefense
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: DestinationIP
  entityType: IP
- fieldMappings:
  - identifier: Address
    columnName: SourceIP
  entityType: IP
- fieldMappings:
  - identifier: FullName
    columnName: DestinationHostName
  entityType: Host
- fieldMappings:
  - identifier: FullName
    columnName: SourceHostName
  entityType: Host
- fieldMappings:
  - identifier: Url
    columnName: RequestURL
  entityType: URL
triggerThreshold: 0
id: 3cf46cb9-99d5-42ee-a43c-7bd88ea394a1
tactics: 
version: 1.0.1
customDetails:
  AnalystRating: LogSeverity
  IronVueUrl: IronVueUrl
  AlertCreatedTime: TimeGenerated
  IronDefenseAlertId: DeviceCustomString4
  AnalystSeverity: DeviceCustomString1
  IronDefenseStatus: Status
alertDetailsOverride:
  alertDisplayNameFormat: |
        {{Category}}: {{Subcategory}} ({{DeviceCustomString4}})
  alertSeverityColumnName: LogSeverity
  alertDescriptionFormat: |
        IronDefense detected suspicious activity on {{TimeGenerated}} and categorized it as "{{AlertDescription}}".  View full details in IronVue: {{IronVueUrl}}
queryPeriod: 5m
kind: Scheduled
eventGroupingSettings:
  aggregationKind: AlertPerResult
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IronNet IronDefense/Analytic Rules/IronDefense_Detection_Query.yaml
queryFrequency: 5m
severity: Medium
status: Available
description: |
    'Creates incidents based on behavioral detections from IronDefense.'
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))  
triggerOperator: gt

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/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",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": null,
        "techniques": null,
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}