Detection rules › Kusto
Conditional Access - A Conditional Access policy was updated
A Conditional Access policy was updated in Entra ID.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Impairment |
Telemetry coverage
| Platform | Record / event type |
|---|---|
| Azure | Update conditional access policy |
Rules detecting the same action
These rules filter on the same operation.
- Azure MFA Disabled (Panther)
- Azure Policy Violation Detected (Panther)
- CA Policy Removed by Non Approved Actor (Sigma)
- CA Policy Updated by Non Approved Actor (Sigma)
- Certificate-Based Authentication Enabled (Sigma)
- Changes to Device Registration Policy (Sigma)
- Conditional Access - A Conditional Access app exclusion has changed (Kusto)
- Conditional Access - A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed) (Kusto)
Rule body
id: ccca6b88-a7b6-41c9-9be2-fc3daeb65b26
name: Conditional Access - A Conditional Access policy was updated
version: 1.0.1
kind: Scheduled
description: A Conditional Access policy was updated in Entra ID.
severity: Informational
requiredDataConnectors:
- connectorId: AzureActiveDirectory
dataTypes:
- AuditLogs
queryFrequency: 5m
queryPeriod: 5m
triggerOperator: gt
triggerThreshold: 0
tactics:
- DefenseEvasion
relevantTechniques:
- T1562
query: |+
// A Conditional Access policy was updated.
AuditLogs
| where OperationName == "Update conditional access policy"
| extend
policy = tostring(TargetResources[0].displayName),
modifiedBy = tostring(InitiatedBy.user.userPrincipalName),
oldPolicy = tostring(TargetResources[0].modifiedProperties[0].oldValue),
newPolicy = tostring(TargetResources[0].modifiedProperties[0].newValue)
| extend
accountName = tostring(split(modifiedBy, "@")[0]),
upnSuffix = tostring(split(modifiedBy, "@")[1])
| project
TimeGenerated,
OperationName,
policy,
modifiedBy,
accountName,
upnSuffix,
oldPolicy,
newPolicy,
Result
entityMappings:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: accountName
- identifier: UPNSuffix
columnName: upnSuffix
suppressionEnabled: false
suppressionDuration: 5h
eventGroupingSettings:
aggregationKind: AlertPerResult
incidentConfiguration:
createIncident: true
groupingConfiguration:
enabled: false
reopenClosedIncident: false
lookbackDuration: PT1H
matchingMethod: AllEntities
groupByEntities: []
groupByAlertDetails: []
groupByCustomDetails: []
Stages and Predicates
Stage 1: source
AuditLogs
Stage 2: where
| where OperationName == "Update conditional access policy"
Stage 3: extend
| extend
policy = tostring(TargetResources[0].displayName),
modifiedBy = tostring(InitiatedBy.user.userPrincipalName),
oldPolicy = tostring(TargetResources[0].modifiedProperties[0].oldValue),
newPolicy = tostring(TargetResources[0].modifiedProperties[0].newValue)
Stage 4: extend
| extend
accountName = tostring(split(modifiedBy, "@")[0]),
upnSuffix = tostring(split(modifiedBy, "@")[1])
Stage 5: project
| project
TimeGenerated,
OperationName,
policy,
modifiedBy,
accountName,
upnSuffix,
oldPolicy,
newPolicy,
Result
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
OperationName | eq |
| field:"OperationName" kind:eq value:"Update conditional access policy" |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
OperationName | project |
Result | project |
TimeGenerated | project |
accountName | project |
modifiedBy | project |
newPolicy | project |
oldPolicy | project |
policy | project |
upnSuffix | project |