Conditional Access - A Conditional Access app exclusion has changed
Id | 0990a481-3bc8-4682-838c-313918dd858c |
Rulename | Conditional Access - A Conditional Access app exclusion has changed |
Description | A Conditional Access app exclusion has changed in Entra ID. |
Severity | Low |
Tactics | CommandAndControl |
Techniques | T1071 |
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 app exclusion has changed.yaml |
Version | 1.0.0 |
Arm template | 0990a481-3bc8-4682-838c-313918dd858c.json |
// A Conditional Access app exclusion has changed.
AuditLogs
| where OperationName in ("Update conditional access policy")
| extend excludeApplicationsOld = extractjson("$.conditions.applications.excludeApplications", tostring(TargetResources[0].modifiedProperties[0].oldValue))
| extend excludeApplicationsNew = extractjson("$.conditions.applications.excludeApplications", tostring(TargetResources[0].modifiedProperties[0].newValue))
| where excludeApplicationsOld != excludeApplicationsNew
| 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,
excludeApplicationsOld,
excludeApplicationsNew
| order by TimeGenerated desc
version: 1.0.0
requiredDataConnectors:
- connectorId: AzureActiveDirectory
dataTypes:
- AuditLogs
relevantTechniques:
- T1071
incidentConfiguration:
createIncident: true
groupingConfiguration:
groupByEntities: []
groupByCustomDetails: []
groupByAlertDetails: []
lookbackDuration: 1h
matchingMethod: AllEntities
enabled: false
reopenClosedIncident: false
suppressionEnabled: false
triggerOperator: gt
kind: Scheduled
id: 0990a481-3bc8-4682-838c-313918dd858c
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/Conditional Access - A Conditional Access app exclusion has changed.yaml
description: A Conditional Access app exclusion has changed in Entra ID.
eventGroupingSettings:
aggregationKind: AlertPerResult
tactics:
- CommandAndControl
queryPeriod: 5m
queryFrequency: 5m
triggerThreshold: 0
entityMappings:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: accountName
- identifier: UPNSuffix
columnName: upnSuffix
severity: Low
suppressionDuration: 5h
name: Conditional Access - A Conditional Access app exclusion has changed
query: |+
// A Conditional Access app exclusion has changed.
AuditLogs
| where OperationName in ("Update conditional access policy")
| extend excludeApplicationsOld = extractjson("$.conditions.applications.excludeApplications", tostring(TargetResources[0].modifiedProperties[0].oldValue))
| extend excludeApplicationsNew = extractjson("$.conditions.applications.excludeApplications", tostring(TargetResources[0].modifiedProperties[0].newValue))
| where excludeApplicationsOld != excludeApplicationsNew
| 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,
excludeApplicationsOld,
excludeApplicationsNew
| order by TimeGenerated desc
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2024-01-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/0990a481-3bc8-4682-838c-313918dd858c')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/0990a481-3bc8-4682-838c-313918dd858c')]",
"properties": {
"alertRuleTemplateName": "0990a481-3bc8-4682-838c-313918dd858c",
"customDetails": null,
"description": "A Conditional Access app exclusion has changed in Entra ID.",
"displayName": "Conditional Access - A Conditional Access app exclusion has changed",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "accountName",
"identifier": "Name"
},
{
"columnName": "upnSuffix",
"identifier": "UPNSuffix"
}
]
}
],
"eventGroupingSettings": {
"aggregationKind": "AlertPerResult"
},
"incidentConfiguration": {
"createIncident": true,
"groupingConfiguration": {
"enabled": false,
"groupByAlertDetails": [],
"groupByCustomDetails": [],
"groupByEntities": [],
"lookbackDuration": "PT1H",
"matchingMethod": "AllEntities",
"reopenClosedIncident": false
}
},
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/Conditional Access - A Conditional Access app exclusion has changed.yaml",
"query": "// A Conditional Access app exclusion has changed.\nAuditLogs\n| where OperationName in (\"Update conditional access policy\")\n| extend excludeApplicationsOld = extractjson(\"$.conditions.applications.excludeApplications\", tostring(TargetResources[0].modifiedProperties[0].oldValue))\n| extend excludeApplicationsNew = extractjson(\"$.conditions.applications.excludeApplications\", tostring(TargetResources[0].modifiedProperties[0].newValue))\n| where excludeApplicationsOld != excludeApplicationsNew\n| extend modifiedBy = tostring(InitiatedBy.user.userPrincipalName)\n| extend accountName = tostring(split(modifiedBy, \"@\")[0])\n| extend upnSuffix = tostring(split(modifiedBy, \"@\")[1])\n| project\n TimeGenerated,\n OperationName,\n policy = TargetResources[0].displayName,\n modifiedBy,\n accountName,\n upnSuffix,\n result = Result,\n excludeApplicationsOld,\n excludeApplicationsNew\n| order by TimeGenerated desc\n\n\n",
"queryFrequency": "PT5M",
"queryPeriod": "PT5M",
"severity": "Low",
"subTechniques": [],
"suppressionDuration": "PT5H",
"suppressionEnabled": false,
"tactics": [
"CommandAndControl"
],
"techniques": [
"T1071"
],
"templateVersion": "1.0.0",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}