Changes to PIM Settings

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Id	0ed0fe7c-af29-4990-af7f-bb5ccb231198
Rulename	Changes to PIM Settings
Description	PIM provides a key mechanism for assigning privileges to accounts, this query detects changes to PIM role settings. Monitor these changes to ensure they are being made legitimately and don’t confer more privileges than expected or reduce the security of a PIM elevation. Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#changes-to-privileged-accounts
Severity	High
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/ChangestoPIMSettings.yaml
Version	1.0.1
Arm template	0ed0fe7c-af29-4990-af7f-bb5ccb231198.json

KQL

AuditLogs
  | where Category =~ "RoleManagement"
  | where OperationName =~ "Update role setting in PIM"
  | extend userPrincipalName = tostring(parse_json(tostring(InitiatedBy.user)).userPrincipalName)
  | extend ipAddress = tostring(parse_json(tostring(InitiatedBy.user)).ipAddress)
  | project-reorder TimeGenerated, OperationName, ResultReason, userPrincipalName, ipAddress

YAML

metadata:
  author:
    name: Pete Bryan
  support:
    tier: Community
  source:
    kind: Community
  categories:
    domains:
    - Security - Others
    - Identity
severity: High
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/AuditLogs/ChangestoPIMSettings.yaml
description: |
  'PIM provides a key mechanism for assigning privileges to accounts, this query detects changes to PIM role settings.
    Monitor these changes to ensure they are being made legitimately and don't confer more privileges than expected or reduce the security of a PIM elevation.
    Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#changes-to-privileged-accounts'  
tags:
- AADSecOpsGuide
triggerOperator: gt
queryPeriod: 1d
requiredDataConnectors:
- dataTypes:
  - AuditLogs
  connectorId: AzureActiveDirectory
queryFrequency: 1d
triggerThreshold: 0
tactics:
- PrivilegeEscalation
query: |
  AuditLogs
    | where Category =~ "RoleManagement"
    | where OperationName =~ "Update role setting in PIM"
    | extend userPrincipalName = tostring(parse_json(tostring(InitiatedBy.user)).userPrincipalName)
    | extend ipAddress = tostring(parse_json(tostring(InitiatedBy.user)).ipAddress)
    | project-reorder TimeGenerated, OperationName, ResultReason, userPrincipalName, ipAddress  
kind: Scheduled
relevantTechniques:
- T1078.004
version: 1.0.1
id: 0ed0fe7c-af29-4990-af7f-bb5ccb231198
entityMappings:
- fieldMappings:
  - columnName: userPrincipalName
    identifier: FullName
  entityType: Account
- fieldMappings:
  - columnName: ipAddress
    identifier: Address
  entityType: IP
name: Changes to PIM Settings

ARM

{
  "$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/0ed0fe7c-af29-4990-af7f-bb5ccb231198')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/0ed0fe7c-af29-4990-af7f-bb5ccb231198')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01-preview",
      "properties": {
        "displayName": "Changes to PIM Settings",
        "description": "'PIM provides a key mechanism for assigning privileges to accounts, this query detects changes to PIM role settings.\n  Monitor these changes to ensure they are being made legitimately and don't confer more privileges than expected or reduce the security of a PIM elevation.\n  Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-privileged-accounts#changes-to-privileged-accounts'\n",
        "severity": "High",
        "enabled": true,
        "query": "AuditLogs\n  | where Category =~ \"RoleManagement\"\n  | where OperationName =~ \"Update role setting in PIM\"\n  | extend userPrincipalName = tostring(parse_json(tostring(InitiatedBy.user)).userPrincipalName)\n  | extend ipAddress = tostring(parse_json(tostring(InitiatedBy.user)).ipAddress)\n  | project-reorder TimeGenerated, OperationName, ResultReason, userPrincipalName, ipAddress\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "PrivilegeEscalation"
        ],
        "techniques": [
          "T1078.004"
        ],
        "alertRuleTemplateName": "0ed0fe7c-af29-4990-af7f-bb5ccb231198",
        "customDetails": null,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "userPrincipalName",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "ipAddress",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/AuditLogs/ChangestoPIMSettings.yaml",
        "tags": [
          "AADSecOpsGuide"
        ],
        "templateVersion": "1.0.1"
      }
    }
  ]
}