User Assigned Privileged Role

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Id	050b9b3d-53d0-4364-a3da-1b678b8211ec
Rulename	User Assigned Privileged Role
Description	Identifies when a new privileged role is assigned to a user. Any account eligible for a role is now being given privileged access. If the assignment is unexpected or into a role that isn’t the responsibility of the account holder, investigate. Ref : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#things-to-monitor-1
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/Azure Active Directory/Analytic Rules/UserAssignedPrivilegedRole.yaml
Version	1.0.3
Arm template	050b9b3d-53d0-4364-a3da-1b678b8211ec.json

KQL

AuditLogs
| where Category =~ "RoleManagement"
| where AADOperationType in ("Assign", "AssignEligibleRole")
| where ActivityDisplayName has_any ("Add eligible member to role", "Add member to role")
| mv-expand TargetResources
| mv-expand TargetResources.modifiedProperties
| extend displayName_ = tostring(TargetResources_modifiedProperties.displayName)
| where displayName_ =~ "Role.DisplayName"
| extend RoleName = tostring(parse_json(tostring(TargetResources_modifiedProperties.newValue)))
| where RoleName contains "Admin"
| extend InitiatingApp = tostring(parse_json(tostring(InitiatedBy.app)).displayName)
| extend Initiator = iif(isnotempty(InitiatingApp), InitiatingApp, tostring(parse_json(tostring(InitiatedBy.user)).userPrincipalName))
// Uncomment below to not alert for PIM activations
//| where Initiator != "MS-PIM"
| extend Target = tostring(TargetResources.userPrincipalName)
| summarize by bin(TimeGenerated, 1h), OperationName,  RoleName, Target, Initiator, Result
| extend AccountCustomEntity = Target

YAML

version: 1.0.3
status: Available
queryFrequency: 2h
requiredDataConnectors:
- connectorId: AzureActiveDirectory
  dataTypes:
  - AuditLogs
entityMappings:
- fieldMappings:
  - columnName: Initiator
    identifier: FullName
  entityType: Account
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: FullName
  entityType: Account
kind: Scheduled
queryPeriod: 2h
severity: High
query: |
  AuditLogs
  | where Category =~ "RoleManagement"
  | where AADOperationType in ("Assign", "AssignEligibleRole")
  | where ActivityDisplayName has_any ("Add eligible member to role", "Add member to role")
  | mv-expand TargetResources
  | mv-expand TargetResources.modifiedProperties
  | extend displayName_ = tostring(TargetResources_modifiedProperties.displayName)
  | where displayName_ =~ "Role.DisplayName"
  | extend RoleName = tostring(parse_json(tostring(TargetResources_modifiedProperties.newValue)))
  | where RoleName contains "Admin"
  | extend InitiatingApp = tostring(parse_json(tostring(InitiatedBy.app)).displayName)
  | extend Initiator = iif(isnotempty(InitiatingApp), InitiatingApp, tostring(parse_json(tostring(InitiatedBy.user)).userPrincipalName))
  // Uncomment below to not alert for PIM activations
  //| where Initiator != "MS-PIM"
  | extend Target = tostring(TargetResources.userPrincipalName)
  | summarize by bin(TimeGenerated, 1h), OperationName,  RoleName, Target, Initiator, Result
  | extend AccountCustomEntity = Target  
tags:
- AADSecOpsGuide
triggerOperator: gt
id: 050b9b3d-53d0-4364-a3da-1b678b8211ec
description: |
  'Identifies when a new privileged role is assigned to a user.  Any account eligible for a role is now being given privileged access. If the assignment is unexpected or into a role that isn't the responsibility of the account holder, investigate.
  Ref : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#things-to-monitor-1'  
triggerThreshold: 0
name: User Assigned Privileged Role
relevantTechniques:
- T1078.004
tactics:
- Persistence
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Active Directory/Analytic Rules/UserAssignedPrivilegedRole.yaml

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/050b9b3d-53d0-4364-a3da-1b678b8211ec')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/050b9b3d-53d0-4364-a3da-1b678b8211ec')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "User Assigned Privileged Role",
        "description": "'Identifies when a new privileged role is assigned to a user.  Any account eligible for a role is now being given privileged access. If the assignment is unexpected or into a role that isn't the responsibility of the account holder, investigate.\nRef : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#things-to-monitor-1'\n",
        "severity": "High",
        "enabled": true,
        "query": "AuditLogs\n| where Category =~ \"RoleManagement\"\n| where AADOperationType in (\"Assign\", \"AssignEligibleRole\")\n| where ActivityDisplayName has_any (\"Add eligible member to role\", \"Add member to role\")\n| mv-expand TargetResources\n| mv-expand TargetResources.modifiedProperties\n| extend displayName_ = tostring(TargetResources_modifiedProperties.displayName)\n| where displayName_ =~ \"Role.DisplayName\"\n| extend RoleName = tostring(parse_json(tostring(TargetResources_modifiedProperties.newValue)))\n| where RoleName contains \"Admin\"\n| extend InitiatingApp = tostring(parse_json(tostring(InitiatedBy.app)).displayName)\n| extend Initiator = iif(isnotempty(InitiatingApp), InitiatingApp, tostring(parse_json(tostring(InitiatedBy.user)).userPrincipalName))\n// Uncomment below to not alert for PIM activations\n//| where Initiator != \"MS-PIM\"\n| extend Target = tostring(TargetResources.userPrincipalName)\n| summarize by bin(TimeGenerated, 1h), OperationName,  RoleName, Target, Initiator, Result\n| extend AccountCustomEntity = Target\n",
        "queryFrequency": "PT2H",
        "queryPeriod": "PT2H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Persistence"
        ],
        "techniques": [
          "T1078.004"
        ],
        "alertRuleTemplateName": "050b9b3d-53d0-4364-a3da-1b678b8211ec",
        "customDetails": null,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "identifier": "FullName",
                "columnName": "Initiator"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "identifier": "FullName",
                "columnName": "AccountCustomEntity"
              }
            ]
          }
        ],
        "tags": [
          "AADSecOpsGuide"
        ],
        "status": "Available",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Active Directory/Analytic Rules/UserAssignedPrivilegedRole.yaml",
        "templateVersion": "1.0.3"
      }
    }
  ]
}