Radiflow - Unauthorized Internet Access

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Id	cc33e1a9-e167-460b-93e6-f14af652dbd3
Rulename	Radiflow - Unauthorized Internet Access
Description	Generates an incident when an unauthorized link between the network and the Internet is detected by Radiflow’s iSID.
Severity	Medium
Tactics	InitialAccess Impact
Techniques	T0822 T0883 T0882
Required data connectors	RadiflowIsid
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/Radiflow/Analytic Rules/RadiflowUnauthorizedInternetAccess.yaml
Version	1.0.0
Arm template	cc33e1a9-e167-460b-93e6-f14af652dbd3.json

KQL

RadiflowEvent
| where DeviceProduct =~ 'iSID'
| where EventClassID in (55, 147, 193, 194)

YAML

eventGroupingSettings:
  aggregationKind: AlertPerResult
queryFrequency: 1h
suppressionDuration: 5h
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Radiflow/Analytic Rules/RadiflowUnauthorizedInternetAccess.yaml
alertDetailsOverride:
  alertSeverityColumnName: EventSeverity
  alertDescriptionFormat: "An external connection to the network has been detected. Please check whether this activity is legitimate and the external device is authorized to connect.\n\nMessage: {{EventMessage}}\nSource device: {{SourceIP}} \nDestination device (if any): {{DestinationIP}} "
  alertDynamicProperties: []
  alertDisplayNameFormat: Unauthorized Internet Access
kind: Scheduled
relevantTechniques:
- T0822
- T0883
- T0882
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: SourceHostName
    identifier: HostName
  - columnName: SourceHostName
    identifier: NetBiosName
- entityType: Host
  fieldMappings:
  - columnName: DestinationHostName
    identifier: HostName
  - columnName: DestinationHostName
    identifier: NetBiosName
- entityType: IP
  fieldMappings:
  - columnName: SourceIP
    identifier: Address
- entityType: IP
  fieldMappings:
  - columnName: DestinationIP
    identifier: Address
id: cc33e1a9-e167-460b-93e6-f14af652dbd3
customDetails:
  SourceHostName: SourceHostName
  Protocol: Protocol
  SourceVendor: SourceVendor
  DestinationVendor: DestinationVendor
  SourceType: SourceType
  SourceMAC: SourceMACAddress
  Port: Port
  DestinationType: DestinationType
  DestinationIP: DestinationIP
  SourceIP: SourceIP
  DestinationMAC: DestinationMACAddress
  SourceVLAN: SourceVLAN
  DestinationHostName: DestinationHostName
queryPeriod: 1h
query: |
  RadiflowEvent
  | where DeviceProduct =~ 'iSID'
  | where EventClassID in (55, 147, 193, 194)  
description: Generates an incident when an unauthorized link between the network and the Internet is detected by Radiflow's iSID.
tactics:
- InitialAccess
- Impact
triggerOperator: gt
severity: Medium
name: Radiflow - Unauthorized Internet Access
requiredDataConnectors:
- dataTypes:
  - RadiflowEvent
  connectorId: RadiflowIsid
triggerThreshold: 0
status: Available
suppressionEnabled: false
incidentConfiguration:
  groupingConfiguration:
    groupByAlertDetails: []
    groupByEntities: []
    groupByCustomDetails: []
    matchingMethod: AllEntities
    enabled: true
    lookbackDuration: 1h
    reopenClosedIncident: false
  createIncident: true
version: 1.0.0

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/cc33e1a9-e167-460b-93e6-f14af652dbd3')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/cc33e1a9-e167-460b-93e6-f14af652dbd3')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "An external connection to the network has been detected. Please check whether this activity is legitimate and the external device is authorized to connect.\n\nMessage: {{EventMessage}}\nSource device: {{SourceIP}} \nDestination device (if any): {{DestinationIP}} ",
          "alertDisplayNameFormat": "Unauthorized Internet Access",
          "alertDynamicProperties": [],
          "alertSeverityColumnName": "EventSeverity"
        },
        "alertRuleTemplateName": "cc33e1a9-e167-460b-93e6-f14af652dbd3",
        "customDetails": {
          "DestinationHostName": "DestinationHostName",
          "DestinationIP": "DestinationIP",
          "DestinationMAC": "DestinationMACAddress",
          "DestinationType": "DestinationType",
          "DestinationVendor": "DestinationVendor",
          "Port": "Port",
          "Protocol": "Protocol",
          "SourceHostName": "SourceHostName",
          "SourceIP": "SourceIP",
          "SourceMAC": "SourceMACAddress",
          "SourceType": "SourceType",
          "SourceVendor": "SourceVendor",
          "SourceVLAN": "SourceVLAN"
        },
        "description": "Generates an incident when an unauthorized link between the network and the Internet is detected by Radiflow's iSID.",
        "displayName": "Radiflow - Unauthorized Internet Access",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "SourceHostName",
                "identifier": "HostName"
              },
              {
                "columnName": "SourceHostName",
                "identifier": "NetBiosName"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DestinationHostName",
                "identifier": "HostName"
              },
              {
                "columnName": "DestinationHostName",
                "identifier": "NetBiosName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SourceIP",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "DestinationIP",
                "identifier": "Address"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "groupByAlertDetails": [],
            "groupByCustomDetails": [],
            "groupByEntities": [],
            "lookbackDuration": "PT1H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Radiflow/Analytic Rules/RadiflowUnauthorizedInternetAccess.yaml",
        "query": "RadiflowEvent\n| where DeviceProduct =~ 'iSID'\n| where EventClassID in (55, 147, 193, 194)\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact",
          "InitialAccess"
        ],
        "techniques": null,
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}