Azure AD Role Management Permission Grant
Id | 1ff56009-db01-4615-8211-d4fda21da02d |
Rulename | Azure AD Role Management Permission Grant |
Description | Identifies when the Microsoft Graph RoleManagement.ReadWrite.Directory (Delegated or Application) permission is granted to a service principal. This permission allows an application to read and manage the role-based access control (RBAC) settings for your company’s directory. An adversary could use this permission to add an Azure AD object to an Admin directory role and escalate privileges. Ref : https://docs.microsoft.com/graph/permissions-reference#role-management-permissions Ref : https://docs.microsoft.com/graph/api/directoryrole-post-members?view=graph-rest-1.0&tabs=http |
Severity | High |
Tactics | Persistence Impact |
Techniques | T1098.003 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/AzureADRoleManagementPermissionGrant.yaml |
Version | 1.0.3 |
Arm template | 1ff56009-db01-4615-8211-d4fda21da02d.json |
AuditLogs
| where Category == "ApplicationManagement" and LoggedByService == "Core Directory" and OperationName in ("Add delegated permission grant", "Add app role assignment to service principal")
| mv-expand TargetResource = TargetResources
//| where tostring(TargetResource["displayName"]) == "Microsoft Graph"
| mv-expand modifiedProperty = TargetResource["modifiedProperties"]
| where tostring(modifiedProperty["displayName"]) in ("AppRole.Value", "DelegatedPermissionGrant.Scope")
| extend PermissionGrant = trim(@'[\"\s]+', tostring(modifiedProperty["newValue"]))
| where PermissionGrant has "RoleManagement.ReadWrite.Directory"
| mv-apply modifiedProperty = TargetResource["modifiedProperties"] on (
summarize modifiedProperties = make_bag(
pack(tostring(modifiedProperty["displayName"]),
pack("oldValue", trim(@'[\"\s]+', tostring(modifiedProperty["oldValue"])),
"newValue", trim(@'[\"\s]+', tostring(modifiedProperty["newValue"])))))
)
| extend
//AppDisplayName for operation "Add delegated permission grant" will be in operation "Consent to application" (usually same CorrelationId)
AppDisplayName = tostring(modifiedProperties["ServicePrincipal.DisplayName"]["newValue"]),
AppServicePrincipalId = tostring(modifiedProperties["ServicePrincipal.ObjectID"]["newValue"]),
Initiator = iif(isnotempty(InitiatedBy["app"]), tostring(InitiatedBy["app"]["displayName"]), tostring(InitiatedBy["user"]["userPrincipalName"])),
InitiatorId = iif(isnotempty(InitiatedBy["app"]), tostring(InitiatedBy["app"]["servicePrincipalId"]), tostring(InitiatedBy["user"]["id"]))
| project TimeGenerated, OperationName, Result, PermissionGrant, AppDisplayName, AppServicePrincipalId, Initiator, InitiatorId, InitiatedBy, TargetResources, AdditionalDetails, CorrelationId
tags:
- SimuLand
queryPeriod: 2h
version: 1.0.3
relevantTechniques:
- T1098.003
- T1078.004
queryFrequency: 2h
kind: Scheduled
name: Azure AD Role Management Permission Grant
id: 1ff56009-db01-4615-8211-d4fda21da02d
entityMappings:
- fieldMappings:
- columnName: Initiator
identifier: FullName
entityType: Account
- fieldMappings:
- columnName: AppDisplayName
identifier: FullName
entityType: Account
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Active Directory/Analytic Rules/AzureADRoleManagementPermissionGrant.yaml
severity: High
query: |
AuditLogs
| where Category == "ApplicationManagement" and LoggedByService == "Core Directory" and OperationName in ("Add delegated permission grant", "Add app role assignment to service principal")
| mv-expand TargetResource = TargetResources
//| where tostring(TargetResource["displayName"]) == "Microsoft Graph"
| mv-expand modifiedProperty = TargetResource["modifiedProperties"]
| where tostring(modifiedProperty["displayName"]) in ("AppRole.Value", "DelegatedPermissionGrant.Scope")
| extend PermissionGrant = trim(@'[\"\s]+', tostring(modifiedProperty["newValue"]))
| where PermissionGrant has "RoleManagement.ReadWrite.Directory"
| mv-apply modifiedProperty = TargetResource["modifiedProperties"] on (
summarize modifiedProperties = make_bag(
pack(tostring(modifiedProperty["displayName"]),
pack("oldValue", trim(@'[\"\s]+', tostring(modifiedProperty["oldValue"])),
"newValue", trim(@'[\"\s]+', tostring(modifiedProperty["newValue"])))))
)
| extend
//AppDisplayName for operation "Add delegated permission grant" will be in operation "Consent to application" (usually same CorrelationId)
AppDisplayName = tostring(modifiedProperties["ServicePrincipal.DisplayName"]["newValue"]),
AppServicePrincipalId = tostring(modifiedProperties["ServicePrincipal.ObjectID"]["newValue"]),
Initiator = iif(isnotempty(InitiatedBy["app"]), tostring(InitiatedBy["app"]["displayName"]), tostring(InitiatedBy["user"]["userPrincipalName"])),
InitiatorId = iif(isnotempty(InitiatedBy["app"]), tostring(InitiatedBy["app"]["servicePrincipalId"]), tostring(InitiatedBy["user"]["id"]))
| project TimeGenerated, OperationName, Result, PermissionGrant, AppDisplayName, AppServicePrincipalId, Initiator, InitiatorId, InitiatedBy, TargetResources, AdditionalDetails, CorrelationId
tactics:
- Persistence
- Impact
description: |
'Identifies when the Microsoft Graph RoleManagement.ReadWrite.Directory (Delegated or Application) permission is granted to a service principal.
This permission allows an application to read and manage the role-based access control (RBAC) settings for your company's directory.
An adversary could use this permission to add an Azure AD object to an Admin directory role and escalate privileges.
Ref : https://docs.microsoft.com/graph/permissions-reference#role-management-permissions
Ref : https://docs.microsoft.com/graph/api/directoryrole-post-members?view=graph-rest-1.0&tabs=http'
requiredDataConnectors:
- connectorId: AzureActiveDirectory
dataTypes:
- AuditLogs
status: Available
triggerThreshold: 0
triggerOperator: gt
{
"$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/1ff56009-db01-4615-8211-d4fda21da02d')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/1ff56009-db01-4615-8211-d4fda21da02d')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01",
"properties": {
"displayName": "Azure AD Role Management Permission Grant",
"description": "'Identifies when the Microsoft Graph RoleManagement.ReadWrite.Directory (Delegated or Application) permission is granted to a service principal.\nThis permission allows an application to read and manage the role-based access control (RBAC) settings for your company's directory.\nAn adversary could use this permission to add an Azure AD object to an Admin directory role and escalate privileges.\nRef : https://docs.microsoft.com/graph/permissions-reference#role-management-permissions\nRef : https://docs.microsoft.com/graph/api/directoryrole-post-members?view=graph-rest-1.0&tabs=http'\n",
"severity": "High",
"enabled": true,
"query": "AuditLogs\n| where Category == \"ApplicationManagement\" and LoggedByService == \"Core Directory\" and OperationName in (\"Add delegated permission grant\", \"Add app role assignment to service principal\")\n| mv-expand TargetResource = TargetResources\n//| where tostring(TargetResource[\"displayName\"]) == \"Microsoft Graph\"\n| mv-expand modifiedProperty = TargetResource[\"modifiedProperties\"]\n| where tostring(modifiedProperty[\"displayName\"]) in (\"AppRole.Value\", \"DelegatedPermissionGrant.Scope\")\n| extend PermissionGrant = trim(@'[\\\"\\s]+', tostring(modifiedProperty[\"newValue\"]))\n| where PermissionGrant has \"RoleManagement.ReadWrite.Directory\"\n| mv-apply modifiedProperty = TargetResource[\"modifiedProperties\"] on (\n summarize modifiedProperties = make_bag(\n pack(tostring(modifiedProperty[\"displayName\"]),\n pack(\"oldValue\", trim(@'[\\\"\\s]+', tostring(modifiedProperty[\"oldValue\"])),\n \"newValue\", trim(@'[\\\"\\s]+', tostring(modifiedProperty[\"newValue\"])))))\n)\n| extend\n //AppDisplayName for operation \"Add delegated permission grant\" will be in operation \"Consent to application\" (usually same CorrelationId)\n AppDisplayName = tostring(modifiedProperties[\"ServicePrincipal.DisplayName\"][\"newValue\"]),\n AppServicePrincipalId = tostring(modifiedProperties[\"ServicePrincipal.ObjectID\"][\"newValue\"]),\n Initiator = iif(isnotempty(InitiatedBy[\"app\"]), tostring(InitiatedBy[\"app\"][\"displayName\"]), tostring(InitiatedBy[\"user\"][\"userPrincipalName\"])),\n InitiatorId = iif(isnotempty(InitiatedBy[\"app\"]), tostring(InitiatedBy[\"app\"][\"servicePrincipalId\"]), tostring(InitiatedBy[\"user\"][\"id\"]))\n| project TimeGenerated, OperationName, Result, PermissionGrant, AppDisplayName, AppServicePrincipalId, Initiator, InitiatorId, InitiatedBy, TargetResources, AdditionalDetails, CorrelationId\n",
"queryFrequency": "PT2H",
"queryPeriod": "PT2H",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Persistence",
"Impact"
],
"techniques": [
"T1098.003",
"T1078.004"
],
"alertRuleTemplateName": "1ff56009-db01-4615-8211-d4fda21da02d",
"customDetails": null,
"entityMappings": [
{
"fieldMappings": [
{
"identifier": "FullName",
"columnName": "Initiator"
}
],
"entityType": "Account"
},
{
"fieldMappings": [
{
"identifier": "FullName",
"columnName": "AppDisplayName"
}
],
"entityType": "Account"
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Active Directory/Analytic Rules/AzureADRoleManagementPermissionGrant.yaml",
"templateVersion": "1.0.3",
"status": "Available",
"tags": [
"SimuLand"
]
}
}
]
}