Conditional Access - A Conditional Access Device platforms condition has changed the Device platforms condition can be spoofed

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Id	e3368079-a2c0-4f1c-9fb7-287e907393ef
Rulename	Conditional Access - A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed)
Description	A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed) in Entra ID.
Severity	Low
Tactics	DefenseEvasion
Techniques	T1562.007
Required data connectors	AzureActiveDirectory
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/Microsoft Entra ID/Analytic Rules/Conditional Access - A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed).yaml
Version	1.0.1
Arm template	e3368079-a2c0-4f1c-9fb7-287e907393ef.json

KQL

// A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed).
AuditLogs
| where OperationName in ("Update conditional access policy")
| extend excludePlatformsOld = extractjson("$.conditions.platforms.excludePlatforms", tostring(TargetResources[0].modifiedProperties[0].oldValue))
| extend excludePlatformsNew = extractjson("$.conditions.platforms.excludePlatforms", tostring(TargetResources[0].modifiedProperties[0].newValue))
| where excludePlatformsOld != excludePlatformsNew
| extend modifiedBy = tostring(InitiatedBy.user.userPrincipalName)
| extend accountName = tostring(split(modifiedBy, "@")[0])
| extend upnSuffix = tostring(split(modifiedBy, "@")[1])
| project
    TimeGenerated,
    OperationName,
    policy = TargetResources[0].displayName,
    modifiedBy,
    accountName,
    upnSuffix,
    result = Result,
    excludePlatformsOld,
    excludePlatformsNew
| order by TimeGenerated desc

YAML

suppressionEnabled: false
description: A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed) in Entra ID.
kind: Scheduled
tactics:
- DefenseEvasion
requiredDataConnectors:
- connectorId: AzureActiveDirectory
  dataTypes:
  - AuditLogs
incidentConfiguration:
  groupingConfiguration:
    enabled: false
    groupByEntities: []
    reopenClosedIncident: false
    lookbackDuration: PT1H
    matchingMethod: AllEntities
    groupByCustomDetails: []
    groupByAlertDetails: []
  createIncident: true
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/Conditional Access - A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed).yaml
severity: Low
name: Conditional Access - A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed)
suppressionDuration: 5h
eventGroupingSettings:
  aggregationKind: AlertPerResult
triggerThreshold: 0
queryPeriod: 5m
query: |
  // A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed).
  AuditLogs
  | where OperationName in ("Update conditional access policy")
  | extend excludePlatformsOld = extractjson("$.conditions.platforms.excludePlatforms", tostring(TargetResources[0].modifiedProperties[0].oldValue))
  | extend excludePlatformsNew = extractjson("$.conditions.platforms.excludePlatforms", tostring(TargetResources[0].modifiedProperties[0].newValue))
  | where excludePlatformsOld != excludePlatformsNew
  | extend modifiedBy = tostring(InitiatedBy.user.userPrincipalName)
  | extend accountName = tostring(split(modifiedBy, "@")[0])
  | extend upnSuffix = tostring(split(modifiedBy, "@")[1])
  | project
      TimeGenerated,
      OperationName,
      policy = TargetResources[0].displayName,
      modifiedBy,
      accountName,
      upnSuffix,
      result = Result,
      excludePlatformsOld,
      excludePlatformsNew
  | order by TimeGenerated desc  
relevantTechniques:
- T1562.007
id: e3368079-a2c0-4f1c-9fb7-287e907393ef
queryFrequency: 5m
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: accountName
    identifier: Name
  - columnName: upnSuffix
    identifier: UPNSuffix
triggerOperator: gt
version: 1.0.1

ARM