Unauthorized remote access to the network Microsoft Defender for IoT
Id | 1ff4fa3d-150b-4c87-b733-26c289af0d49 |
Rulename | Unauthorized remote access to the network (Microsoft Defender for IoT) |
Description | This alert leverages Defender for IoT to detect unauthorized remote access to network devices, if another device on the network is compromised, target devices can be accessed remotely, increasing the attack surface. |
Severity | Medium |
Tactics | InitialAccess |
Techniques | T0886 |
Required data connectors | IoT |
Kind | Scheduled |
Query frequency | 1h |
Query period | 1h |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic Rules/IoTUnauthorizedRemoteAccess.yaml |
Version | 1.0.2 |
Arm template | 1ff4fa3d-150b-4c87-b733-26c289af0d49.json |
SecurityAlert
| where ProviderName == "IoTSecurity"
| where AlertName == "Unauthorized SSH Access"
| 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
severity: Medium
relevantTechniques:
- T0886
customDetails:
Protocol: Protocol
AlertManagementUri: AlertManagementUri
Sensor: DeviceId
VendorOriginalId: VendorOriginalId
queryFrequency: 1h
kind: Scheduled
version: 1.0.2
name: Unauthorized remote access to the network (Microsoft Defender for IoT)
triggerOperator: gt
description: |
'This alert leverages Defender for IoT to detect unauthorized remote access to network devices, if another device on the network is compromised, target devices can be accessed remotely, increasing the attack surface.'
queryPeriod: 1h
query: |
SecurityAlert
| where ProviderName == "IoTSecurity"
| where AlertName == "Unauthorized SSH Access"
| 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
alertDetailsOverride:
alertDescriptionFormat: (MDIoT) {{Description}}
alertDynamicProperties:
- alertProperty: ProductName
value: ProductName
- alertProperty: RemediationSteps
value: RemediationSteps
- alertProperty: Techniques
value: Techniques
- alertProperty: ProductComponentName
value: ProductComponentName
- alertProperty: AlertLink
value: AlertLink
alertDisplayNameFormat: (MDIoT) {{AlertName}}
alertSeverityColumnName: AlertSeverity
alertTacticsColumnName: Tactics
entityMappings:
- entityType: IP
fieldMappings:
- columnName: SourceDeviceAddress
identifier: Address
- entityType: IP
fieldMappings:
- columnName: DestDeviceAddress
identifier: Address
tactics:
- InitialAccess
status: Available
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic Rules/IoTUnauthorizedRemoteAccess.yaml
eventGroupingSettings:
aggregationKind: AlertPerResult
id: 1ff4fa3d-150b-4c87-b733-26c289af0d49
requiredDataConnectors:
- dataTypes:
- SecurityAlert (ASC for IoT)
connectorId: IoT
{
"$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/1ff4fa3d-150b-4c87-b733-26c289af0d49')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/1ff4fa3d-150b-4c87-b733-26c289af0d49')]",
"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": "1ff4fa3d-150b-4c87-b733-26c289af0d49",
"customDetails": {
"AlertManagementUri": "AlertManagementUri",
"Protocol": "Protocol",
"Sensor": "DeviceId",
"VendorOriginalId": "VendorOriginalId"
},
"description": "'This alert leverages Defender for IoT to detect unauthorized remote access to network devices, if another device on the network is compromised, target devices can be accessed remotely, increasing the attack surface.'\n",
"displayName": "Unauthorized remote access to the network (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/IoTUnauthorizedRemoteAccess.yaml",
"query": "SecurityAlert\n| where ProviderName == \"IoTSecurity\"\n| where AlertName == \"Unauthorized SSH Access\"\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": "PT1H",
"queryPeriod": "PT1H",
"severity": "Medium",
"status": "Available",
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"InitialAccess"
],
"techniques": null,
"templateVersion": "1.0.2",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}