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/Azure Active Directory/Analytic Rules/BulkChangestoPrivilegedAccountPermissions.yaml |
Version | 1.0.4 |
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 Target = 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(Target) by bin(TimeGenerated, 1h)
| where dcount_Target > 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 TargetName = tostring(split(Target,'@',0)[0]), TargetUPNSuffix = tostring(split(Target,'@',1)[0]),
InitiatedByUserName = tostring(split(InitiatedByUser,'@',0)[0]), InitiatedByUserUPNSuffix = tostring(split(InitiatedByUser,'@',1)[0])
severity: High
queryFrequency: 2h
relevantTechniques:
- T1078.004
tactics:
- PrivilegeEscalation
kind: Scheduled
customDetails:
TargetUser: Target
InitiatedByUser: InitiatedByUser
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 Target = 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(Target) by bin(TimeGenerated, 1h)
| where dcount_Target > 9
| join kind=rightsemi (
AdminRecords
| extend TimeWindow = bin(TimeGenerated, 1h)
) on $left.TimeGenerated == $right.TimeWindow
| extend InitiatedByUser = iff(isnotempty(InitiatedBy.user.userPrincipalName), tostring(InitiatedBy.user.userPrincipalName), "")
| extend TargetName = tostring(split(Target,'@',0)[0]), TargetUPNSuffix = tostring(split(Target,'@',1)[0]),
InitiatedByUserName = tostring(split(InitiatedByUser,'@',0)[0]), InitiatedByUserUPNSuffix = tostring(split(InitiatedByUser,'@',1)[0])
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Active Directory/Analytic Rules/BulkChangestoPrivilegedAccountPermissions.yaml
queryPeriod: 2h
status: Available
version: 1.0.4
tags:
- AADSecOpsGuide
name: Bulk Changes to Privileged Account Permissions
requiredDataConnectors:
- dataTypes:
- AuditLogs
connectorId: AzureActiveDirectory
triggerOperator: gt
entityMappings:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: TargetName
- identifier: UPNSuffix
columnName: TargetUPNSuffix
- entityType: Account
fieldMappings:
- identifier: Name
columnName: InitiatedByUserName
- identifier: UPNSuffix
columnName: InitiatedByUserUPNSuffix
id: 218f60de-c269-457a-b882-9966632b9dc6
description: |
'Identifies when changes to multiple users permissions are changed at once. Investigate immediately if not a planned change. This setting could enable an attacker access to Azure subscriptions in your environment.
Ref : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-identity-management'
triggerThreshold: 0
{
"$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/218f60de-c269-457a-b882-9966632b9dc6')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/218f60de-c269-457a-b882-9966632b9dc6')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01-preview",
"properties": {
"displayName": "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.\nRef : https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-identity-management'\n",
"severity": "High",
"enabled": true,
"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 Target = 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(Target) by bin(TimeGenerated, 1h)\n| where dcount_Target > 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 TargetName = tostring(split(Target,'@',0)[0]), TargetUPNSuffix = tostring(split(Target,'@',1)[0]),\n InitiatedByUserName = tostring(split(InitiatedByUser,'@',0)[0]), InitiatedByUserUPNSuffix = tostring(split(InitiatedByUser,'@',1)[0])\n",
"queryFrequency": "PT2H",
"queryPeriod": "PT2H",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"PrivilegeEscalation"
],
"techniques": [
"T1078.004"
],
"alertRuleTemplateName": "218f60de-c269-457a-b882-9966632b9dc6",
"customDetails": {
"TargetUser": "Target",
"InitiatedByUser": "InitiatedByUser"
},
"entityMappings": [
{
"fieldMappings": [
{
"columnName": "TargetName",
"identifier": "Name"
},
{
"columnName": "TargetUPNSuffix",
"identifier": "UPNSuffix"
}
],
"entityType": "Account"
},
{
"fieldMappings": [
{
"columnName": "InitiatedByUserName",
"identifier": "Name"
},
{
"columnName": "InitiatedByUserUPNSuffix",
"identifier": "UPNSuffix"
}
],
"entityType": "Account"
}
],
"templateVersion": "1.0.4",
"status": "Available",
"tags": [
"AADSecOpsGuide"
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Active Directory/Analytic Rules/BulkChangestoPrivilegedAccountPermissions.yaml"
}
}
]
}