kqlHunting

Deletion Conditional Access Policy

This KQL query lists all conditional access policies that have been deleted. The modification of authentication processes can be used to create persistence on an cloud account.

MITRE ATT&CK

T1556

Detection Query

AuditLogs
| where OperationName == "Delete conditional access policy"
| extend DeletedPolicy = TargetResources.[0].displayName, Actor = InitiatedBy.user.userPrincipalName
| project TimeGenerated, Actor, DeletedPolicy, TargetResources

Data Sources

AuditLogs

Platforms

azure-adazure-sentinel

References

Tags

azure-active-directory

Raw Content

# Deletion Conditional Access Policy

## Query Information

#### MITRE ATT&CK Technique(s)

| Technique ID | Title    | Link    |
| ---  | --- | --- |
| T1556 | Modify Authentication Process | https://attack.mitre.org/techniques/T1556/ |

#### Description
This KQL query lists all conditional access policies that have been deleted. The modification of authentication processes can be used to create persistence on an cloud account.

#### Risk
Adveries can delete CA policies to get persistence.

#### References
- https://learn.microsoft.com/en-us/azure/active-directory/architecture/security-operations-consumer-accounts
- https://learn.microsoft.com/en-us/azure/active-directory/conditional-access/


## Sentinel
```KQL
AuditLogs
| where OperationName == "Delete conditional access policy"
| extend DeletedPolicy = TargetResources.[0].displayName, Actor = InitiatedBy.user.userPrincipalName
| project TimeGenerated, Actor, DeletedPolicy, TargetResources
```