PIM Elevation Request Rejected

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Id	7d7e20f8-3384-4b71-811c-f5e950e8306c
Rulename	PIM Elevation Request Rejected
Description	Identifies when a user is rejected for a privileged role elevation via PIM. Monitor rejections for indicators of attacker compromise of the requesting account. Ref : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-identity-management
Severity	High
Tactics	Persistence
Techniques	T1078.004
Required data connectors	AzureActiveDirectory
Kind	Scheduled
Query frequency	2h
Query period	2h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/PIMElevationRequestRejected.yaml
Version	1.0.8
Arm template	7d7e20f8-3384-4b71-811c-f5e950e8306c.json

KQL

AuditLogs
| where ActivityDisplayName =~'Add member to role request denied (PIM activation)'
| mv-apply ResourceItem = TargetResources on 
  (
      where ResourceItem.type =~ "Role"
      | extend Role = trim(@'"',tostring(ResourceItem.displayName))
  )
| mv-apply ResourceItem = TargetResources on 
  (
      where ResourceItem.type =~ "User"
      | extend TargetUserPrincipalName = trim(@'"',tostring(ResourceItem.userPrincipalName))
  )
| where isnotempty(InitiatedBy.user)
| extend InitiatingAppName = tostring(InitiatedBy.app.displayName)
| extend InitiatingAppServicePrincipalId = tostring(InitiatedBy.app.servicePrincipalId)
| extend InitiatingUserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)
| extend InitiatingAadUserId = tostring(InitiatedBy.user.id)
| extend InitiatingIpAddress = tostring(iff(isnotempty(InitiatedBy.user.ipAddress), InitiatedBy.user.ipAddress, InitiatedBy.app.ipAddress))
| extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])
| extend InitiatedByName = tostring(split(InitiatingUserPrincipalName,'@',0)[0]), InitiatedByUPNSuffix = tostring(split(InitiatingUserPrincipalName,'@',1)[0])
| project-reorder TimeGenerated, TargetUserPrincipalName, Role, OperationName, Result, ResultDescription

YAML

queryPeriod: 2h
query: |
  AuditLogs
  | where ActivityDisplayName =~'Add member to role request denied (PIM activation)'
  | mv-apply ResourceItem = TargetResources on 
    (
        where ResourceItem.type =~ "Role"
        | extend Role = trim(@'"',tostring(ResourceItem.displayName))
    )
  | mv-apply ResourceItem = TargetResources on 
    (
        where ResourceItem.type =~ "User"
        | extend TargetUserPrincipalName = trim(@'"',tostring(ResourceItem.userPrincipalName))
    )
  | where isnotempty(InitiatedBy.user)
  | extend InitiatingAppName = tostring(InitiatedBy.app.displayName)
  | extend InitiatingAppServicePrincipalId = tostring(InitiatedBy.app.servicePrincipalId)
  | extend InitiatingUserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)
  | extend InitiatingAadUserId = tostring(InitiatedBy.user.id)
  | extend InitiatingIpAddress = tostring(iff(isnotempty(InitiatedBy.user.ipAddress), InitiatedBy.user.ipAddress, InitiatedBy.app.ipAddress))
  | extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])
  | extend InitiatedByName = tostring(split(InitiatingUserPrincipalName,'@',0)[0]), InitiatedByUPNSuffix = tostring(split(InitiatingUserPrincipalName,'@',1)[0])
  | project-reorder TimeGenerated, TargetUserPrincipalName, Role, OperationName, Result, ResultDescription  
name: PIM Elevation Request Rejected
entityMappings:
- fieldMappings:
  - columnName: InitiatingUserPrincipalName
    identifier: FullName
  - columnName: InitiatedByName
    identifier: Name
  - columnName: InitiatedByUPNSuffix
    identifier: UPNSuffix
  entityType: Account
- fieldMappings:
  - columnName: TargetUserPrincipalName
    identifier: FullName
  - columnName: TargetName
    identifier: Name
  - columnName: TargetUPNSuffix
    identifier: UPNSuffix
  entityType: Account
- fieldMappings:
  - columnName: InitiatingAadUserId
    identifier: AadUserId
  entityType: Account
- fieldMappings:
  - columnName: InitiatingAppServicePrincipalId
    identifier: AadUserId
  entityType: Account
- fieldMappings:
  - columnName: InitiatingIpAddress
    identifier: Address
  entityType: IP
queryFrequency: 2h
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/PIMElevationRequestRejected.yaml
tags:
- AADSecOpsGuide
requiredDataConnectors:
- connectorId: AzureActiveDirectory
  dataTypes:
  - AuditLogs
description: |
  'Identifies when a user is rejected for a privileged role elevation via PIM. Monitor rejections for indicators of attacker compromise of the requesting account.
  Ref : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-identity-management'  
kind: Scheduled
version: 1.0.8
status: Available
severity: High
relevantTechniques:
- T1078.004
triggerOperator: gt
triggerThreshold: 0
tactics:
- Persistence
id: 7d7e20f8-3384-4b71-811c-f5e950e8306c

ARM