Authentication Method Changed for Privileged Account
Id | feb0a2fb-ae75-4343-8cbc-ed545f1da289 |
Rulename | Authentication Method Changed for Privileged Account |
Description | Identifies authentication methods being changed for a privileged account. This could be an indicated of an attacker adding an auth method to the account so they can have continued access. Ref : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#things-to-monitor-1 |
Severity | High |
Tactics | Persistence |
Techniques | T1098 |
Required data connectors | AzureActiveDirectory BehaviorAnalytics |
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/Business Email Compromise - Financial Fraud/Analytic Rules/AuthenticationMethodChangedforPrivilegedAccount.yaml |
Version | 1.0.1 |
Arm template | feb0a2fb-ae75-4343-8cbc-ed545f1da289.json |
let VIPUsers = (IdentityInfo
| where AssignedRoles contains "Admin"
| summarize by tolower(AccountUPN));
AuditLogs
| where Category =~ "UserManagement"
| where ActivityDisplayName =~ "User registered security info"
| where LoggedByService =~ "Authentication Methods"
| extend AccountCustomEntity = tostring(TargetResources[0].userPrincipalName), IPCustomEntity = tostring(parse_json(tostring(InitiatedBy.user)).ipAddress)
| where AccountCustomEntity in (VIPUsers)
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Business Email Compromise - Financial Fraud/Analytic Rules/AuthenticationMethodChangedforPrivilegedAccount.yaml
severity: High
tags:
- AADSecOpsGuide
name: Authentication Method Changed for Privileged Account
entityMappings:
- entityType: Account
fieldMappings:
- columnName: AccountCustomEntity
identifier: FullName
- entityType: IP
fieldMappings:
- columnName: IPCustomEntity
identifier: Address
relevantTechniques:
- T1098
queryFrequency: 2h
triggerThreshold: 0
queryPeriod: 2h
description: |
'Identifies authentication methods being changed for a privileged account. This could be an indicated of an attacker adding an auth method to the account so they can have continued access.
Ref : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#things-to-monitor-1'
id: feb0a2fb-ae75-4343-8cbc-ed545f1da289
version: 1.0.1
tactics:
- Persistence
query: |
let VIPUsers = (IdentityInfo
| where AssignedRoles contains "Admin"
| summarize by tolower(AccountUPN));
AuditLogs
| where Category =~ "UserManagement"
| where ActivityDisplayName =~ "User registered security info"
| where LoggedByService =~ "Authentication Methods"
| extend AccountCustomEntity = tostring(TargetResources[0].userPrincipalName), IPCustomEntity = tostring(parse_json(tostring(InitiatedBy.user)).ipAddress)
| where AccountCustomEntity in (VIPUsers)
requiredDataConnectors:
- dataTypes:
- AuditLogs
connectorId: AzureActiveDirectory
- dataTypes:
- BehaviorAnalytics
connectorId: BehaviorAnalytics
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/feb0a2fb-ae75-4343-8cbc-ed545f1da289')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/feb0a2fb-ae75-4343-8cbc-ed545f1da289')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01-preview",
"properties": {
"displayName": "Authentication Method Changed for Privileged Account",
"description": "'Identifies authentication methods being changed for a privileged account. This could be an indicated of an attacker adding an auth method to the account so they can have continued access.\nRef : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#things-to-monitor-1'\n",
"severity": "High",
"enabled": true,
"query": "let VIPUsers = (IdentityInfo\n| where AssignedRoles contains \"Admin\"\n| summarize by tolower(AccountUPN));\nAuditLogs\n| where Category =~ \"UserManagement\"\n| where ActivityDisplayName =~ \"User registered security info\"\n| where LoggedByService =~ \"Authentication Methods\"\n| extend AccountCustomEntity = tostring(TargetResources[0].userPrincipalName), IPCustomEntity = tostring(parse_json(tostring(InitiatedBy.user)).ipAddress)\n| where AccountCustomEntity in (VIPUsers)\n",
"queryFrequency": "PT2H",
"queryPeriod": "PT2H",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Persistence"
],
"techniques": [
"T1098"
],
"alertRuleTemplateName": "feb0a2fb-ae75-4343-8cbc-ed545f1da289",
"customDetails": null,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"identifier": "FullName",
"columnName": "AccountCustomEntity"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"identifier": "Address",
"columnName": "IPCustomEntity"
}
]
}
],
"templateVersion": "1.0.1",
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Business Email Compromise - Financial Fraud/Analytic Rules/AuthenticationMethodChangedforPrivilegedAccount.yaml",
"tags": [
"AADSecOpsGuide"
]
}
}
]
}