Bulk Changes to Privileged Account Permissions
| Id | 218f60de-c269-457a-b882-9966632b9dc6 |
| Rulename | Bulk Changes to Privileged Account Permissions |
| Description | Identifies when changes to multiple users permissions are changed at once. Investigate immediately if not a planned change. This setting could enable an attacker access to Azure subscriptions in your environment. Ref : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-identity-management |
| Severity | High |
| Tactics | PrivilegeEscalation |
| 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/Microsoft Entra ID/Analytic Rules/BulkChangestoPrivilegedAccountPermissions.yaml |
| Version | 1.0.7 |
| Arm template | 218f60de-c269-457a-b882-9966632b9dc6.json |
let AdminRecords = AuditLogs
| where Category =~ "RoleManagement"
| where ActivityDisplayName has_any ("Add eligible member to role", "Add member to role")
| mv-apply TargetResource = TargetResources on
(
where TargetResource.type =~ "User"
| extend TargetUserPrincipalName = tostring(TargetResource.userPrincipalName),
props = TargetResource.modifiedProperties
)
| mv-apply Property = props on
(
where Property.displayName =~ "Role.DisplayName"
| extend RoleName = trim('"',tostring(Property.newValue))
)
| where RoleName contains "Admin";
AdminRecords
| summarize dcount(TargetUserPrincipalName) by bin(TimeGenerated, 1h)
| where dcount_TargetUserPrincipalName > 9
| join kind=rightsemi (
AdminRecords
| extend TimeWindow = bin(TimeGenerated, 1h)
) on $left.TimeGenerated == $right.TimeWindow
| extend InitiatedByUser = iff(isnotempty(InitiatedBy.user.userPrincipalName), tostring(InitiatedBy.user.userPrincipalName), "")
| 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(iff(isnotempty(InitiatedBy.user.ipAddress), InitiatedBy.user.ipAddress, InitiatedBy.app.ipAddress))
| extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])
| extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, "@")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, "@")[1])
relevantTechniques:
- T1078.004
name: Bulk Changes to Privileged Account Permissions
requiredDataConnectors:
- dataTypes:
- AuditLogs
connectorId: AzureActiveDirectory
entityMappings:
- fieldMappings:
- identifier: Name
columnName: InitiatingAppName
- identifier: AadUserId
columnName: InitiatingAppServicePrincipalId
entityType: Account
- fieldMappings:
- identifier: FullName
columnName: TargetUserPrincipalName
- identifier: Name
columnName: TargetName
- identifier: UPNSuffix
columnName: TargetUPNSuffix
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: Address
columnName: InitiatingIpAddress
entityType: IP
triggerThreshold: 0
id: 218f60de-c269-457a-b882-9966632b9dc6
tactics:
- PrivilegeEscalation
version: 1.0.7
customDetails:
TargetUser: TargetUserPrincipalName
InitiatedByUser: InitiatedByUser
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/BulkChangestoPrivilegedAccountPermissions.yaml
queryPeriod: 2h
kind: Scheduled
tags:
- AADSecOpsGuide
queryFrequency: 2h
severity: High
status: Available
description: |
'Identifies when changes to multiple users permissions are changed at once. Investigate immediately if not a planned change. This setting could enable an attacker access to Azure subscriptions in your environment.
Ref : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-identity-management'
query: |
let AdminRecords = AuditLogs
| where Category =~ "RoleManagement"
| where ActivityDisplayName has_any ("Add eligible member to role", "Add member to role")
| mv-apply TargetResource = TargetResources on
(
where TargetResource.type =~ "User"
| extend TargetUserPrincipalName = tostring(TargetResource.userPrincipalName),
props = TargetResource.modifiedProperties
)
| mv-apply Property = props on
(
where Property.displayName =~ "Role.DisplayName"
| extend RoleName = trim('"',tostring(Property.newValue))
)
| where RoleName contains "Admin";
AdminRecords
| summarize dcount(TargetUserPrincipalName) by bin(TimeGenerated, 1h)
| where dcount_TargetUserPrincipalName > 9
| join kind=rightsemi (
AdminRecords
| extend TimeWindow = bin(TimeGenerated, 1h)
) on $left.TimeGenerated == $right.TimeWindow
| extend InitiatedByUser = iff(isnotempty(InitiatedBy.user.userPrincipalName), tostring(InitiatedBy.user.userPrincipalName), "")
| extend InitiatingAppName = tostring(InitiatedBy.app.displayName)
| extend InitiatingAppServicePrincipalId = tostring(InitiatedBy.app.servicePrincipalId)
| extend InitiatingUserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)
| extend InitiatingAadUserId = tostring(InitiatedBy.user.id)
| extend InitiatingIpAddress = tostring(iff(isnotempty(InitiatedBy.user.ipAddress), InitiatedBy.user.ipAddress, InitiatedBy.app.ipAddress))
| extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])
| extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, "@")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, "@")[1])
triggerOperator: gt
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2024-01-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/218f60de-c269-457a-b882-9966632b9dc6')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/218f60de-c269-457a-b882-9966632b9dc6')]",
"properties": {
"alertRuleTemplateName": "218f60de-c269-457a-b882-9966632b9dc6",
"customDetails": {
"InitiatedByUser": "InitiatedByUser",
"TargetUser": "TargetUserPrincipalName"
},
"description": "'Identifies when changes to multiple users permissions are changed at once. Investigate immediately if not a planned change. This setting could enable an attacker access to Azure subscriptions in your environment.\nRef : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-identity-management'\n",
"displayName": "Bulk Changes to Privileged Account Permissions",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "InitiatingAppName",
"identifier": "Name"
},
{
"columnName": "InitiatingAppServicePrincipalId",
"identifier": "AadUserId"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "TargetUserPrincipalName",
"identifier": "FullName"
},
{
"columnName": "TargetName",
"identifier": "Name"
},
{
"columnName": "TargetUPNSuffix",
"identifier": "UPNSuffix"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "InitiatingUserPrincipalName",
"identifier": "FullName"
},
{
"columnName": "InitiatingAccountName",
"identifier": "Name"
},
{
"columnName": "InitiatingAccountUPNSuffix",
"identifier": "UPNSuffix"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "InitiatingAadUserId",
"identifier": "AadUserId"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "InitiatingIpAddress",
"identifier": "Address"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/BulkChangestoPrivilegedAccountPermissions.yaml",
"query": "let AdminRecords = AuditLogs\n| where Category =~ \"RoleManagement\"\n| where ActivityDisplayName has_any (\"Add eligible member to role\", \"Add member to role\")\n| mv-apply TargetResource = TargetResources on \n (\n where TargetResource.type =~ \"User\"\n | extend TargetUserPrincipalName = tostring(TargetResource.userPrincipalName),\n props = TargetResource.modifiedProperties\n )\n| mv-apply Property = props on \n (\n where Property.displayName =~ \"Role.DisplayName\"\n | extend RoleName = trim('\"',tostring(Property.newValue))\n )\n| where RoleName contains \"Admin\";\nAdminRecords\n| summarize dcount(TargetUserPrincipalName) by bin(TimeGenerated, 1h)\n| where dcount_TargetUserPrincipalName > 9\n| join kind=rightsemi (\n AdminRecords\n | extend TimeWindow = bin(TimeGenerated, 1h)\n) on $left.TimeGenerated == $right.TimeWindow\n| extend InitiatedByUser = iff(isnotempty(InitiatedBy.user.userPrincipalName), tostring(InitiatedBy.user.userPrincipalName), \"\")\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(iff(isnotempty(InitiatedBy.user.ipAddress), InitiatedBy.user.ipAddress, InitiatedBy.app.ipAddress))\n| extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])\n| extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, \"@\")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, \"@\")[1])\n",
"queryFrequency": "PT2H",
"queryPeriod": "PT2H",
"severity": "High",
"status": "Available",
"subTechniques": [
"T1078.004"
],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"PrivilegeEscalation"
],
"tags": [
"AADSecOpsGuide"
],
"techniques": [
"T1078"
],
"templateVersion": "1.0.7",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}