Radiflow - Unauthorized Internet Access

Back


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

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

ARM