Multiple scans in the network Microsoft Defender for IoT

Back


Id	493916d5-a094-4bfa-bdd1-d983a063ea3d
Rulename	Multiple scans in the network (Microsoft Defender for IoT)
Description	This alert leverages Defender for IoT to detect multiple scans on the network indicating new devices, functionality, application misconfiguration, or malicious reconnaissance activity on the network.
Severity	High
Tactics	Discovery
Techniques	T0842
Required data connectors	IoT
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/IoTOTThreatMonitoringwithDefenderforIoT/Analytic%20Rules/IoTNetworkScanning.yaml
Version	1.0.4
Arm template	493916d5-a094-4bfa-bdd1-d983a063ea3d.json

KQL

SecurityAlert
| where ProviderName == "IoTSecurity"
| where AlertName has "Scan"
| 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

YAML

queryFrequency: 5m
entityMappings: 
triggerThreshold: 0
triggerOperator: gt
severity: High
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic%20Rules/IoTNetworkScanning.yaml
eventGroupingSettings:
  aggregationKind: AlertPerResult
alertDetailsOverride:
  alertSeverityColumnName: AlertSeverity
  alertDescriptionFormat: (MDIoT) {{Description}}
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: RemediationSteps
    value: RemediationSteps
  - alertProperty: Techniques
    value: Techniques
  - alertProperty: ProductComponentName
    value: ProductComponentName
  - alertProperty: AlertLink
    value: AlertLink
  alertTacticsColumnName: Tactics
  alertDisplayNameFormat: (MDIoT) {{AlertName}}
query: |
  SecurityAlert
  | where ProviderName == "IoTSecurity"
  | where AlertName has "Scan"
  | 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
tactics:
- Discovery
queryPeriod: 5m
customDetails:
  VendorOriginalKey: VendorOriginalId
  Protocol: Protocol
  AlertManagementUri: AlertManagementUri
  Sensor: DeviceId
relevantTechniques:
- T0842
requiredDataConnectors:
- connectorId: IoT
  dataTypes:
  - SecurityAlert (ASC for IoT)
id: 493916d5-a094-4bfa-bdd1-d983a063ea3d
kind: Scheduled
version: 1.0.4
description: |
  'This alert leverages Defender for IoT to detect multiple scans on the network indicating new devices, functionality, application misconfiguration, or malicious reconnaissance activity on the network.'
status: Available
name: Multiple scans in the network (Microsoft Defender for IoT)
sentinelEntitiesMappings:
- columnName: Entities

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/493916d5-a094-4bfa-bdd1-d983a063ea3d')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/493916d5-a094-4bfa-bdd1-d983a063ea3d')]",
      "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": "493916d5-a094-4bfa-bdd1-d983a063ea3d",
        "customDetails": {
          "AlertManagementUri": "AlertManagementUri",
          "Protocol": "Protocol",
          "Sensor": "DeviceId",
          "VendorOriginalKey": "VendorOriginalId"
        },
        "description": "'This alert leverages Defender for IoT to detect multiple scans on the network indicating new devices, functionality, application misconfiguration, or malicious reconnaissance activity on the network.'\n",
        "displayName": "Multiple scans in the network (Microsoft Defender for IoT)",
        "enabled": true,
        "entityMappings": null,
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic%20Rules/IoTNetworkScanning.yaml",
        "query": "SecurityAlert\n| where ProviderName == \"IoTSecurity\"\n| where AlertName has \"Scan\"\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",
        "sentinelEntitiesMappings": [
          {
            "columnName": "Entities"
          }
        ],
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Discovery"
        ],
        "techniques": null,
        "templateVersion": "1.0.4",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}