Detection rules › Kusto
Conditional Access - A Conditional Access policy was disabled
A Conditional Access policy was disabled 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: 40702da1-ae8a-4e46-ac1f-9327ca6ef588
name: Conditional Access - A Conditional Access policy was disabled
version: 1.0.1
kind: Scheduled
description: A Conditional Access policy was disabled in Entra ID.
severity: Low
requiredDataConnectors:
- connectorId: AzureActiveDirectory
dataTypes:
- AuditLogs
queryFrequency: 5m
queryPeriod: 5m
triggerOperator: gt
triggerThreshold: 0
tactics:
- DefenseEvasion
relevantTechniques:
- T1562.007
query: |+
// A Conditional Access policy was disabled.
AuditLogs
| where OperationName in ("Update conditional access policy")
| extend stateOld = extractjson("$.state", tostring(TargetResources[0].modifiedProperties[0].oldValue))
| extend stateNew = extractjson("$.state", tostring(TargetResources[0].modifiedProperties[0].newValue))
| where stateOld == "enabled" and stateNew == "disabled"
| 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,
stateOld,
stateNew
| order by TimeGenerated desc
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 in ("Update conditional access policy")
Stage 3: extend
| extend stateOld = extractjson("$.state", tostring(TargetResources[0].modifiedProperties[0].oldValue))
Stage 4: extend
| extend stateNew = extractjson("$.state", tostring(TargetResources[0].modifiedProperties[0].newValue))
Stage 5: where
| where stateOld == "enabled" and stateNew == "disabled"
Stage 6: extend (3 consecutive steps)
| extend modifiedBy = tostring(InitiatedBy.user.userPrincipalName)
| extend accountName = tostring(split(modifiedBy, "@")[0])
| extend upnSuffix = tostring(split(modifiedBy, "@")[1])
Stage 7: project
| project
TimeGenerated,
OperationName,
policy = TargetResources[0].displayName,
modifiedBy,
accountName,
upnSuffix,
result = Result,
stateOld,
stateNew
Stage 8: sort
| order by TimeGenerated desc
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
OperationName | in |
| field:"OperationName" kind:in value:"Update conditional access policy" |
stateNew | eq |
| field:"stateNew" kind:eq value:"disabled" |
stateOld | eq |
| field:"stateOld" kind:eq value:"enabled" |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
OperationName | project |
TimeGenerated | project |
accountName | project |
modifiedBy | project |
policy | project |
result | project |
stateNew | project |
stateOld | project |
upnSuffix | project |