NRT User added to Azure Active Directory Privileged Groups
| Id | 70fc7201-f28e-4ba7-b9ea-c04b96701f13 |
| Rulename | NRT User added to Azure Active Directory Privileged Groups |
| Description | This will alert when a user is added to any of the Privileged Groups. For further information on AuditLogs please see https://docs.microsoft.com/azure/active-directory/reports-monitoring/reference-audit-activities. For Administrator role permissions in Azure Active Directory please see https://docs.microsoft.com/azure/active-directory/users-groups-roles/directory-assign-admin-roles |
| Severity | Medium |
| Tactics | Persistence PrivilegeEscalation |
| Techniques | T1098 T1078 |
| Required data connectors | AzureActiveDirectory |
| Kind | NRT |
| Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Active Directory/Analytic Rules/NRT_UseraddedtoPrivilgedGroups.yaml |
| Version | 1.0.3 |
| Arm template | 70fc7201-f28e-4ba7-b9ea-c04b96701f13.json |
let OperationList = dynamic(["Add member to role","Add member to role in PIM requested (permanent)"]);
let PrivilegedGroups = dynamic(["UserAccountAdmins","PrivilegedRoleAdmins","TenantAdmins"]);
AuditLogs
//| where LoggedByService =~ "Core Directory"
| where Category =~ "RoleManagement"
| where OperationName in~ (OperationList)
| mv-apply TargetResource = TargetResources on
(
where TargetResource.type =~ "User"
| extend TargetUserPrincipalName = tostring(TargetResource.userPrincipalName),
modProps = TargetResource.modifiedProperties
)
| mv-apply Property = modProps on
(
where Property.displayName =~ "Role.WellKnownObjectName"
| extend DisplayName = trim('"',tostring(Property.displayName)),
GroupName = trim('"',tostring(Property.newValue))
)
| extend AppId = InitiatedBy.app.appId,
InitiatedByDisplayName = case(isnotempty(InitiatedBy.app.displayName), InitiatedBy.app.displayName, isnotempty(InitiatedBy.user.displayName), InitiatedBy.user.displayName, "not available"),
ServicePrincipalId = tostring(InitiatedBy.app.servicePrincipalId),
ServicePrincipalName = tostring(InitiatedBy.app.servicePrincipalName),
UserId = InitiatedBy.user.id,
UserIPAddress = InitiatedBy.user.ipAddress,
UserRoles = InitiatedBy.user.roles,
UserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)
| where GroupName in~ (PrivilegedGroups)
// If you don't want to alert for operations from PIM, remove below filtering for MS-PIM.
//| where InitiatedByDisplayName != "MS-PIM"
| project TimeGenerated, AADOperationType, Category, OperationName, AADTenantId, AppId, InitiatedByDisplayName, ServicePrincipalId, ServicePrincipalName, DisplayName, GroupName, UserId, UserIPAddress, UserRoles, UserPrincipalName, TargetUserPrincipalName
| extend AccountCustomEntity = case(isnotempty(ServicePrincipalName), ServicePrincipalName,
isnotempty(UserPrincipalName), UserPrincipalName,
"")
| extend AccountName = tostring(split(AccountCustomEntity,'@',0)[0]), AccountUPNSuffix = tostring(split(AccountCustomEntity,'@',1)[0])
| extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])
version: 1.0.3
requiredDataConnectors:
- connectorId: AzureActiveDirectory
dataTypes:
- AuditLogs
id: 70fc7201-f28e-4ba7-b9ea-c04b96701f13
name: NRT User added to Azure Active Directory Privileged Groups
kind: NRT
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Active Directory/Analytic Rules/NRT_UseraddedtoPrivilgedGroups.yaml
severity: Medium
relevantTechniques:
- T1098
- T1078
tactics:
- Persistence
- PrivilegeEscalation
tags:
- DEV-0537
query: |
let OperationList = dynamic(["Add member to role","Add member to role in PIM requested (permanent)"]);
let PrivilegedGroups = dynamic(["UserAccountAdmins","PrivilegedRoleAdmins","TenantAdmins"]);
AuditLogs
//| where LoggedByService =~ "Core Directory"
| where Category =~ "RoleManagement"
| where OperationName in~ (OperationList)
| mv-apply TargetResource = TargetResources on
(
where TargetResource.type =~ "User"
| extend TargetUserPrincipalName = tostring(TargetResource.userPrincipalName),
modProps = TargetResource.modifiedProperties
)
| mv-apply Property = modProps on
(
where Property.displayName =~ "Role.WellKnownObjectName"
| extend DisplayName = trim('"',tostring(Property.displayName)),
GroupName = trim('"',tostring(Property.newValue))
)
| extend AppId = InitiatedBy.app.appId,
InitiatedByDisplayName = case(isnotempty(InitiatedBy.app.displayName), InitiatedBy.app.displayName, isnotempty(InitiatedBy.user.displayName), InitiatedBy.user.displayName, "not available"),
ServicePrincipalId = tostring(InitiatedBy.app.servicePrincipalId),
ServicePrincipalName = tostring(InitiatedBy.app.servicePrincipalName),
UserId = InitiatedBy.user.id,
UserIPAddress = InitiatedBy.user.ipAddress,
UserRoles = InitiatedBy.user.roles,
UserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)
| where GroupName in~ (PrivilegedGroups)
// If you don't want to alert for operations from PIM, remove below filtering for MS-PIM.
//| where InitiatedByDisplayName != "MS-PIM"
| project TimeGenerated, AADOperationType, Category, OperationName, AADTenantId, AppId, InitiatedByDisplayName, ServicePrincipalId, ServicePrincipalName, DisplayName, GroupName, UserId, UserIPAddress, UserRoles, UserPrincipalName, TargetUserPrincipalName
| extend AccountCustomEntity = case(isnotempty(ServicePrincipalName), ServicePrincipalName,
isnotempty(UserPrincipalName), UserPrincipalName,
"")
| extend AccountName = tostring(split(AccountCustomEntity,'@',0)[0]), AccountUPNSuffix = tostring(split(AccountCustomEntity,'@',1)[0])
| extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])
entityMappings:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: AccountName
- identifier: UPNSuffix
columnName: AccountUPNSuffix
- entityType: Account
fieldMappings:
- identifier: Name
columnName: TargetName
- identifier: UPNSuffix
columnName: TargetUPNSuffix
description: |
'This will alert when a user is added to any of the Privileged Groups.
For further information on AuditLogs please see https://docs.microsoft.com/azure/active-directory/reports-monitoring/reference-audit-activities.
For Administrator role permissions in Azure Active Directory please see https://docs.microsoft.com/azure/active-directory/users-groups-roles/directory-assign-admin-roles'
{
"$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/70fc7201-f28e-4ba7-b9ea-c04b96701f13')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/70fc7201-f28e-4ba7-b9ea-c04b96701f13')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Nrt",
"apiVersion": "2022-11-01",
"properties": {
"displayName": "NRT User added to Azure Active Directory Privileged Groups",
"description": "'This will alert when a user is added to any of the Privileged Groups.\nFor further information on AuditLogs please see https://docs.microsoft.com/azure/active-directory/reports-monitoring/reference-audit-activities.\nFor Administrator role permissions in Azure Active Directory please see https://docs.microsoft.com/azure/active-directory/users-groups-roles/directory-assign-admin-roles'\n",
"severity": "Medium",
"enabled": true,
"query": "let OperationList = dynamic([\"Add member to role\",\"Add member to role in PIM requested (permanent)\"]);\nlet PrivilegedGroups = dynamic([\"UserAccountAdmins\",\"PrivilegedRoleAdmins\",\"TenantAdmins\"]);\nAuditLogs\n//| where LoggedByService =~ \"Core Directory\"\n| where Category =~ \"RoleManagement\"\n| where OperationName in~ (OperationList)\n| mv-apply TargetResource = TargetResources on \n (\n where TargetResource.type =~ \"User\"\n | extend TargetUserPrincipalName = tostring(TargetResource.userPrincipalName),\n modProps = TargetResource.modifiedProperties\n )\n| mv-apply Property = modProps on \n (\n where Property.displayName =~ \"Role.WellKnownObjectName\"\n | extend DisplayName = trim('\"',tostring(Property.displayName)),\n GroupName = trim('\"',tostring(Property.newValue))\n )\n| extend AppId = InitiatedBy.app.appId,\n InitiatedByDisplayName = case(isnotempty(InitiatedBy.app.displayName), InitiatedBy.app.displayName, isnotempty(InitiatedBy.user.displayName), InitiatedBy.user.displayName, \"not available\"),\n ServicePrincipalId = tostring(InitiatedBy.app.servicePrincipalId),\n ServicePrincipalName = tostring(InitiatedBy.app.servicePrincipalName),\n UserId = InitiatedBy.user.id,\n UserIPAddress = InitiatedBy.user.ipAddress,\n UserRoles = InitiatedBy.user.roles,\n UserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)\n| where GroupName in~ (PrivilegedGroups)\n// If you don't want to alert for operations from PIM, remove below filtering for MS-PIM.\n//| where InitiatedByDisplayName != \"MS-PIM\"\n| project TimeGenerated, AADOperationType, Category, OperationName, AADTenantId, AppId, InitiatedByDisplayName, ServicePrincipalId, ServicePrincipalName, DisplayName, GroupName, UserId, UserIPAddress, UserRoles, UserPrincipalName, TargetUserPrincipalName\n| extend AccountCustomEntity = case(isnotempty(ServicePrincipalName), ServicePrincipalName, \n isnotempty(UserPrincipalName), UserPrincipalName, \n \"\")\n| extend AccountName = tostring(split(AccountCustomEntity,'@',0)[0]), AccountUPNSuffix = tostring(split(AccountCustomEntity,'@',1)[0])\n| extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])\n",
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Persistence",
"PrivilegeEscalation"
],
"techniques": [
"T1098",
"T1078"
],
"alertRuleTemplateName": "70fc7201-f28e-4ba7-b9ea-c04b96701f13",
"customDetails": null,
"entityMappings": [
{
"fieldMappings": [
{
"columnName": "AccountName",
"identifier": "Name"
},
{
"columnName": "AccountUPNSuffix",
"identifier": "UPNSuffix"
}
],
"entityType": "Account"
},
{
"fieldMappings": [
{
"columnName": "TargetName",
"identifier": "Name"
},
{
"columnName": "TargetUPNSuffix",
"identifier": "UPNSuffix"
}
],
"entityType": "Account"
}
],
"templateVersion": "1.0.3",
"status": "Available",
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Active Directory/Analytic Rules/NRT_UseraddedtoPrivilgedGroups.yaml",
"tags": [
"DEV-0537"
]
}
}
]
}