Detect and investigate Azure service principal abuse including privilege escalation, credential compromise, admin consent bypass, and unauthorized enumeration in Microsoft Entra ID environments. Use when detecting and investigate azure service principal abuse including privilege escalation,.
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Detect and investigate Azure service principal abuse including privilege escalation, credential compromise, admin consent bypass, and unauthorized enumeration in Microsoft Entra ID environments. Use when detecting and investigate azure service principal abuse including privilege escalation,.
Azure service principals are identity objects used by applications, services, and automation tools to access Azure resources. Attackers exploit service principals for privilege escalation, lateral movement, and persistent access. Key abuse patterns include: adding credentials to existing principals, assigning privileged roles, bypassing admin consent, and enumerating service principals for attack paths. Application ownership grants the ability to manage credentials and configure permissions, creating hidden privilege escalation paths.
When to Use
Trigger phrases:
"detecting azure service principal abuse"
"Detect and investigate Azure service principal abuse including privilege escalat"
When investigating security incidents that require detecting azure service principal abuse
When building detection rules or threat hunting queries for this domain
When SOC analysts need structured procedures for this analysis type
When validating security monitoring coverage for related attack techniques
Prerequisites
Azure subscription with Microsoft Entra ID P2 license
Access to Azure AD Audit Logs and Sign-in Logs
Microsoft Sentinel or Splunk for SIEM-based detection
Microsoft Graph API permissions for investigation
Global Reader or Security Reader role minimum
Key Abuse Patterns
Follow the principle of least privilege — use the minimum permissions needed for each task
Document everything — maintain logs of all actions, configurations, and findings
Verify before acting — confirm assumptions about the environment before making changes
Automate repetitive steps — script common workflows to reduce human error
1. New Credentials Added to Service Principal
Attackers add new client secrets or certificates to gain persistent access:
Detection Query (KQL - Sentinel):
AuditLogs
| where OperationName has "Add service principal credentials"
or OperationName has "Update application - Certificates and secrets management"
| extend InitiatedBy = tostring(InitiatedBy.user.userPrincipalName)
| extend TargetSP = tostring(TargetResources[0].displayName)
| extend TargetSPId = tostring(TargetResources[0].id)
| project TimeGenerated, InitiatedBy, OperationName, TargetSP, TargetSPId
| sort by TimeGenerated desc
Detection Query (SPL - Splunk):
index=azure sourcetype="azure:aad:audit"
operationName="Add service principal credentials"
OR operationName="Update application*Certificates and secrets*"
| stats count by initiatedBy.user.userPrincipalName, targetResources{}.displayName, _time
| sort -_time
2. Privileged Role Assignment to Service Principal
AuditLogs
| where OperationName == "Add member to role"
| extend RoleName = tostring(TargetResources[0].modifiedProperties[1].newValue)
| where RoleName has_any ("Global Administrator", "Application Administrator",
"Privileged Role Administrator", "Cloud Application Administrator")
| extend TargetSP = tostring(TargetResources[0].displayName)
| extend InitiatedBy = tostring(InitiatedBy.user.userPrincipalName)
| project TimeGenerated, InitiatedBy, TargetSP, RoleName, OperationName
3. Service Principal Enumeration Detection
MicrosoftGraphActivityLogs
| where RequestMethod == "GET"
| where RequestUri has "/servicePrincipals"
| summarize RequestCount = count() by UserAgent, IPAddress, bin(TimeGenerated, 1h)
| where RequestCount > 10
| sort by RequestCount desc
4. Admin Consent Bypass
AuditLogs
| where OperationName == "Consent to application"
| extend ConsentType = tostring(TargetResources[0].modifiedProperties[4].newValue)
| where ConsentType has "AllPrincipals"
| extend AppName = tostring(TargetResources[0].displayName)
| extend InitiatedBy = tostring(InitiatedBy.user.userPrincipalName)
| project TimeGenerated, InitiatedBy, AppName, ConsentType
5. OAuth App Permissions Escalation
AuditLogs
| where OperationName == "Add app role assignment to service principal"
| extend AppRoleValue = tostring(TargetResources[0].modifiedProperties[1].newValue)
| where AppRoleValue has_any ("RoleManagement.ReadWrite.Directory",
"Application.ReadWrite.All", "AppRoleAssignment.ReadWrite.All",
"Directory.ReadWrite.All", "Mail.ReadWrite")
| extend TargetApp = tostring(TargetResources[0].displayName)
| project TimeGenerated, TargetApp, AppRoleValue, CorrelationId
Investigation Procedures
This section covers investigation procedures for detecting azure service principal abuse.
Ensure all prerequisites are met before proceeding
Follow the documented workflow steps in sequence
Record results and any anomalies encountered during this phase
AADServicePrincipalSignInLogs
| where ServicePrincipalId == "<target-sp-id>"
| project TimeGenerated, ServicePrincipalName, IPAddress, Location,
ResourceDisplayName, Status.errorCode
| sort by TimeGenerated desc
Preventive Controls
This section covers preventive controls for detecting azure service principal abuse.
Ensure all prerequisites are met before proceeding
Follow the documented workflow steps in sequence
Record results and any anomalies encountered during this phase
Restrict application registration
# Disable user ability to register applications
Update-MgPolicyAuthorizationPolicy -DefaultUserRolePermissions @{
AllowedToCreateApps = $false
}
Configure app consent policies
# Require admin approval for all app consent requests
New-MgPolicyPermissionGrantPolicy -Id "admin-only-consent" `
-DisplayName "Admin Only Consent" `
-Description "Only admins can consent to applications"
