Microsoft Sentinel Analytic Rules
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Internet Access Microsoft Defender for IoT

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Id9ff3b13b-287a-4ed0-8f6b-7e7b66cbbcbd
RulenameInternet Access (Microsoft Defender for IoT)
DescriptionThis alert leverages Defender for IoT to detect an OT device communicating with Internet which is possibly an indication of improper configuration of an application or malicious activity on the network.
SeverityHigh
TacticsLateralMovement
TechniquesT0886
Required data connectorsIoT
KindScheduled
Query frequency5m
Query period5m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic Rules/IoTInternetAccess.yaml
Version1.0.2
Arm template9ff3b13b-287a-4ed0-8f6b-7e7b66cbbcbd.json
Deploy To Azure
SecurityAlert
| where ProviderName == "IoTSecurity"
| where AlertName has "Internet"
| extend ExtendedProperties = parse_json(ExtendedProperties)
| where tostring(ExtendedProperties.isNew) == "True"
| extend DeviceId = tostring(ExtendedProperties.DeviceId), 
         SourceDeviceAddress = tostring(ExtendedProperties.SourceDeviceAddress), 
         DestDeviceAddress = tostring(ExtendedProperties.DestinationDeviceAddress), 
         RemediationSteps = tostring(parse_json(RemediationSteps)[0]), 
         Protocol = tostring(ExtendedProperties.Protocol), 
         AlertManagementUri = tostring(ExtendedProperties.AlertManagementUri)
| project
  TimeGenerated,
  DeviceId,
  ProductName,
  ProductComponentName,
  AlertSeverity,
  AlertName,
  Description,
  Protocol,
  SourceDeviceAddress,
  DestDeviceAddress,
  RemediationSteps,
  Tactics,
  Entities,
  VendorOriginalId,
  AlertLink,
  AlertManagementUri,
  Techniques
customDetails:
  Protocol: Protocol
  VendorOriginalId: VendorOriginalId
  Sensor: DeviceId
  AlertManagementUri: AlertManagementUri
severity: High
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic Rules/IoTInternetAccess.yaml
id: 9ff3b13b-287a-4ed0-8f6b-7e7b66cbbcbd
name: Internet Access (Microsoft Defender for IoT)
query: |
  SecurityAlert
  | where ProviderName == "IoTSecurity"
  | where AlertName has "Internet"
  | extend ExtendedProperties = parse_json(ExtendedProperties)
  | where tostring(ExtendedProperties.isNew) == "True"
  | extend DeviceId = tostring(ExtendedProperties.DeviceId), 
           SourceDeviceAddress = tostring(ExtendedProperties.SourceDeviceAddress), 
           DestDeviceAddress = tostring(ExtendedProperties.DestinationDeviceAddress), 
           RemediationSteps = tostring(parse_json(RemediationSteps)[0]), 
           Protocol = tostring(ExtendedProperties.Protocol), 
           AlertManagementUri = tostring(ExtendedProperties.AlertManagementUri)
  | project
    TimeGenerated,
    DeviceId,
    ProductName,
    ProductComponentName,
    AlertSeverity,
    AlertName,
    Description,
    Protocol,
    SourceDeviceAddress,
    DestDeviceAddress,
    RemediationSteps,
    Tactics,
    Entities,
    VendorOriginalId,
    AlertLink,
    AlertManagementUri,
    Techniques  
entityMappings:
- fieldMappings:
  - columnName: SourceDeviceAddress
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: DestDeviceAddress
    identifier: Address
  entityType: IP
queryPeriod: 5m
triggerThreshold: 0
eventGroupingSettings:
  aggregationKind: AlertPerResult
tactics:
- LateralMovement
version: 1.0.2
kind: Scheduled
relevantTechniques:
- T0886
queryFrequency: 5m
status: Available
requiredDataConnectors:
- dataTypes:
  - SecurityAlert (ASC for IoT)
  connectorId: IoT
description: |
    'This alert leverages Defender for IoT to detect an OT device communicating with Internet which is possibly an indication of improper configuration of an application or malicious activity on the network.'
alertDetailsOverride:
  alertSeverityColumnName: AlertSeverity
  alertDisplayNameFormat: (MDIoT) {{AlertName}}
  alertTacticsColumnName: Tactics
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: RemediationSteps
    value: RemediationSteps
  - alertProperty: Techniques
    value: Techniques
  - alertProperty: ProductComponentName
    value: ProductComponentName
  - alertProperty: AlertLink
    value: AlertLink
  alertDescriptionFormat: (MDIoT) {{Description}}
triggerOperator: gt
{
  "$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/9ff3b13b-287a-4ed0-8f6b-7e7b66cbbcbd')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9ff3b13b-287a-4ed0-8f6b-7e7b66cbbcbd')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "(MDIoT) {{Description}}",
          "alertDisplayNameFormat": "(MDIoT) {{AlertName}}",
          "alertDynamicProperties": [
            {
              "alertProperty": "ProductName",
              "value": "ProductName"
            },
            {
              "alertProperty": "RemediationSteps",
              "value": "RemediationSteps"
            },
            {
              "alertProperty": "Techniques",
              "value": "Techniques"
            },
            {
              "alertProperty": "ProductComponentName",
              "value": "ProductComponentName"
            },
            {
              "alertProperty": "AlertLink",
              "value": "AlertLink"
            }
          ],
          "alertSeverityColumnName": "AlertSeverity",
          "alertTacticsColumnName": "Tactics"
        },
        "alertRuleTemplateName": "9ff3b13b-287a-4ed0-8f6b-7e7b66cbbcbd",
        "customDetails": {
          "AlertManagementUri": "AlertManagementUri",
          "Protocol": "Protocol",
          "Sensor": "DeviceId",
          "VendorOriginalId": "VendorOriginalId"
        },
        "description": "'This alert leverages Defender for IoT to detect an OT device communicating with Internet which is possibly an indication of improper configuration of an application or malicious activity on the network.'\n",
        "displayName": "Internet Access (Microsoft Defender for IoT)",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SourceDeviceAddress",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "DestDeviceAddress",
                "identifier": "Address"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic Rules/IoTInternetAccess.yaml",
        "query": "SecurityAlert\n| where ProviderName == \"IoTSecurity\"\n| where AlertName has \"Internet\"\n| extend ExtendedProperties = parse_json(ExtendedProperties)\n| where tostring(ExtendedProperties.isNew) == \"True\"\n| extend DeviceId = tostring(ExtendedProperties.DeviceId), \n         SourceDeviceAddress = tostring(ExtendedProperties.SourceDeviceAddress), \n         DestDeviceAddress = tostring(ExtendedProperties.DestinationDeviceAddress), \n         RemediationSteps = tostring(parse_json(RemediationSteps)[0]), \n         Protocol = tostring(ExtendedProperties.Protocol), \n         AlertManagementUri = tostring(ExtendedProperties.AlertManagementUri)\n| project\n  TimeGenerated,\n  DeviceId,\n  ProductName,\n  ProductComponentName,\n  AlertSeverity,\n  AlertName,\n  Description,\n  Protocol,\n  SourceDeviceAddress,\n  DestDeviceAddress,\n  RemediationSteps,\n  Tactics,\n  Entities,\n  VendorOriginalId,\n  AlertLink,\n  AlertManagementUri,\n  Techniques\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "High",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "LateralMovement"
        ],
        "techniques": null,
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}