Internet Access Microsoft Defender for IoT

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Id	9ff3b13b-287a-4ed0-8f6b-7e7b66cbbcbd
Rulename	Internet Access (Microsoft Defender for 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.
Severity	High
Tactics	LateralMovement
Techniques	T0886
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 Rules/IoTInternetAccess.yaml
Version	1.0.3
Arm template	9ff3b13b-287a-4ed0-8f6b-7e7b66cbbcbd.json

KQL

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

YAML

triggerOperator: gt
queryFrequency: 5m
requiredDataConnectors:
- connectorId: IoT
  dataTypes:
  - SecurityAlert (ASC for IoT)
relevantTechniques:
- T0886
entityMappings: 
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  
triggerThreshold: 0
customDetails:
  VendorOriginalId: VendorOriginalId
  Sensor: DeviceId
  AlertManagementUri: AlertManagementUri
  Protocol: Protocol
alertDetailsOverride:
  alertDisplayNameFormat: (MDIoT) {{AlertName}}
  alertTacticsColumnName: Tactics
  alertDescriptionFormat: (MDIoT) {{Description}}
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: RemediationSteps
    value: RemediationSteps
  - alertProperty: Techniques
    value: Techniques
  - alertProperty: ProductComponentName
    value: ProductComponentName
  - alertProperty: AlertLink
    value: AlertLink
  alertSeverityColumnName: AlertSeverity
sentinelEntitiesMappings:
- columnName: Entities
queryPeriod: 5m
name: Internet Access (Microsoft Defender for IoT)
status: Available
kind: Scheduled
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.'
id: 9ff3b13b-287a-4ed0-8f6b-7e7b66cbbcbd
version: 1.0.3
eventGroupingSettings:
  aggregationKind: AlertPerResult
tactics:
- LateralMovement
severity: High
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic Rules/IoTInternetAccess.yaml

ARM