Service Principal Assigned Privileged Role
| Id | 84cccc86-5c11-4b3a-aca6-7c8f738ed0f7 |
| Rulename | Service Principal Assigned Privileged Role |
| Description | Detects a privileged role being added to a Service Principal. Ensure that any assignment to a Service Principal is valid and appropriate - Service Principals should not be assigned to very highly privileged roles such as Global Admin. Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#changes-to-privileged-accounts |
| Severity | Medium |
| Tactics | PrivilegeEscalation |
| Techniques | T1078.004 |
| Required data connectors | AzureActiveDirectory |
| Kind | Scheduled |
| Query frequency | 1d |
| Query period | 1d |
| Trigger threshold | 0 |
| Trigger operator | gt |
| Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Detections/AuditLogs/ServicePrincipalAssignedPrivilegedRole.yaml |
| Version | 1.1.1 |
| Arm template | 84cccc86-5c11-4b3a-aca6-7c8f738ed0f7.json |
AuditLogs
| where OperationName has_all ("member to role", "add")
| where Result =~ "Success"
| extend type_ = tostring(TargetResources[0].type)
| where type_ =~ "ServicePrincipal"
| where isnotempty(TargetResources)
| 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(InitiatedBy.user.ipAddress)
| extend InitiatedBy = tostring(iff(isnotempty(InitiatingUserPrincipalName),InitiatingUserPrincipalName, InitiatingAppName))
| extend ServicePrincipalName = tostring(TargetResources[0].displayName)
| extend ServicePrincipalId = tostring(TargetResources[0].id)
| mv-expand TargetResources[0].modifiedProperties
| extend TargetResources_0_modifiedProperties = columnifexists("TargetResources_0_modifiedProperties", '')
| where isnotempty(TargetResources_0_modifiedProperties)
| extend displayName = tostring(TargetResources_0_modifiedProperties.displayName), newValue = tostring(parse_json(tostring(TargetResources_0_modifiedProperties.newValue)))
| where displayName == "Role.DisplayName" and newValue contains "admin"
| extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, "@")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, "@")[1])
| extend TargetRole = newValue
| project-reorder TimeGenerated, ServicePrincipalName, ServicePrincipalId, InitiatedBy, TargetRole, InitiatingIPAddress
id: 84cccc86-5c11-4b3a-aca6-7c8f738ed0f7
requiredDataConnectors:
- connectorId: AzureActiveDirectory
dataTypes:
- AuditLogs
metadata:
source:
kind: Community
author:
name: Microsoft Security Research
categories:
domains:
- Security - Others
- Identity
support:
tier: Community
description: |
'Detects a privileged role being added to a Service Principal.
Ensure that any assignment to a Service Principal is valid and appropriate - Service Principals should not be assigned to very highly privileged roles such as Global Admin.
Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#changes-to-privileged-accounts'
severity: Medium
version: 1.1.1
entityMappings:
- fieldMappings:
- identifier: Name
columnName: InitiatingAppName
- identifier: AadUserId
columnName: InitiatingAppServicePrincipalId
entityType: Account
- fieldMappings:
- identifier: FullName
columnName: InitiatingUserPrincipalName
- identifier: Name
columnName: InitiatingAccountName
- identifier: UPNSuffix
columnName: InitiatingAccountUPNSuffix
entityType: Account
- fieldMappings:
- identifier: AadUserId
columnName: InitiatingAadUserId
entityType: Account
- fieldMappings:
- identifier: Name
columnName: ServicePrincipalName
- identifier: AadUserId
columnName: ServicePrincipalId
entityType: Account
- fieldMappings:
- identifier: Address
columnName: InitiatingIPAddress
entityType: IP
triggerOperator: gt
triggerThreshold: 0
relevantTechniques:
- T1078.004
kind: Scheduled
queryFrequency: 1d
query: |
AuditLogs
| where OperationName has_all ("member to role", "add")
| where Result =~ "Success"
| extend type_ = tostring(TargetResources[0].type)
| where type_ =~ "ServicePrincipal"
| where isnotempty(TargetResources)
| 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(InitiatedBy.user.ipAddress)
| extend InitiatedBy = tostring(iff(isnotempty(InitiatingUserPrincipalName),InitiatingUserPrincipalName, InitiatingAppName))
| extend ServicePrincipalName = tostring(TargetResources[0].displayName)
| extend ServicePrincipalId = tostring(TargetResources[0].id)
| mv-expand TargetResources[0].modifiedProperties
| extend TargetResources_0_modifiedProperties = columnifexists("TargetResources_0_modifiedProperties", '')
| where isnotempty(TargetResources_0_modifiedProperties)
| extend displayName = tostring(TargetResources_0_modifiedProperties.displayName), newValue = tostring(parse_json(tostring(TargetResources_0_modifiedProperties.newValue)))
| where displayName == "Role.DisplayName" and newValue contains "admin"
| extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, "@")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, "@")[1])
| extend TargetRole = newValue
| project-reorder TimeGenerated, ServicePrincipalName, ServicePrincipalId, InitiatedBy, TargetRole, InitiatingIPAddress
tags:
- AADSecOpsGuide
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/AuditLogs/ServicePrincipalAssignedPrivilegedRole.yaml
tactics:
- PrivilegeEscalation
name: Service Principal Assigned Privileged Role
queryPeriod: 1d
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2023-02-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/84cccc86-5c11-4b3a-aca6-7c8f738ed0f7')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/84cccc86-5c11-4b3a-aca6-7c8f738ed0f7')]",
"properties": {
"alertRuleTemplateName": "84cccc86-5c11-4b3a-aca6-7c8f738ed0f7",
"customDetails": null,
"description": "'Detects a privileged role being added to a Service Principal.\n Ensure that any assignment to a Service Principal is valid and appropriate - Service Principals should not be assigned to very highly privileged roles such as Global Admin.\n Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#changes-to-privileged-accounts'\n",
"displayName": "Service Principal Assigned Privileged Role",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "InitiatingAppName",
"identifier": "Name"
},
{
"columnName": "InitiatingAppServicePrincipalId",
"identifier": "AadUserId"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "InitiatingUserPrincipalName",
"identifier": "FullName"
},
{
"columnName": "InitiatingAccountName",
"identifier": "Name"
},
{
"columnName": "InitiatingAccountUPNSuffix",
"identifier": "UPNSuffix"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "InitiatingAadUserId",
"identifier": "AadUserId"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "ServicePrincipalName",
"identifier": "Name"
},
{
"columnName": "ServicePrincipalId",
"identifier": "AadUserId"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "InitiatingIPAddress",
"identifier": "Address"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/AuditLogs/ServicePrincipalAssignedPrivilegedRole.yaml",
"query": "AuditLogs\n | where OperationName has_all (\"member to role\", \"add\")\n | where Result =~ \"Success\"\n | extend type_ = tostring(TargetResources[0].type)\n | where type_ =~ \"ServicePrincipal\"\n | where isnotempty(TargetResources)\n | extend InitiatingAppName = tostring(InitiatedBy.app.displayName)\n | extend InitiatingAppServicePrincipalId = tostring(InitiatedBy.app.servicePrincipalId)\n | extend InitiatingUserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)\n | extend InitiatingAadUserId = tostring(InitiatedBy.user.id)\n | extend InitiatingIPAddress = tostring(InitiatedBy.user.ipAddress)\n | extend InitiatedBy = tostring(iff(isnotempty(InitiatingUserPrincipalName),InitiatingUserPrincipalName, InitiatingAppName))\n | extend ServicePrincipalName = tostring(TargetResources[0].displayName)\n | extend ServicePrincipalId = tostring(TargetResources[0].id)\n | mv-expand TargetResources[0].modifiedProperties\n | extend TargetResources_0_modifiedProperties = columnifexists(\"TargetResources_0_modifiedProperties\", '')\n | where isnotempty(TargetResources_0_modifiedProperties)\n | extend displayName = tostring(TargetResources_0_modifiedProperties.displayName), newValue = tostring(parse_json(tostring(TargetResources_0_modifiedProperties.newValue)))\n | where displayName == \"Role.DisplayName\" and newValue contains \"admin\"\n | extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, \"@\")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, \"@\")[1])\n | extend TargetRole = newValue\n | project-reorder TimeGenerated, ServicePrincipalName, ServicePrincipalId, InitiatedBy, TargetRole, InitiatingIPAddress\n",
"queryFrequency": "P1D",
"queryPeriod": "P1D",
"severity": "Medium",
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"PrivilegeEscalation"
],
"tags": [
"AADSecOpsGuide"
],
"techniques": [
"T1078"
],
"templateVersion": "1.1.1",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}