High-Risk Admin Activity | Microsoft Sentinel Analytic Rules

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Id	9f82a735-ae43-4c03-afb4-d5d153e1ace1
Rulename	High-Risk Admin Activity
Description	The Okta risk engine auto-assigns risk levels to each login attempt. This rule identifies successful admin operations that correlate with successful high-risk Okta authentication or session start events.
Severity	Medium
Tactics	Persistence PrivilegeEscalation
Techniques	T1098 T1078.004
Required data connectors	OktaSSO OktaSSOv2
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Okta%20Single%20Sign-On/Analytic%20Rules/HighRiskAdminActivity.yaml
Version	1.1.2
Arm template	9f82a735-ae43-4c03-afb4-d5d153e1ace1.json

KQL

let AdminActivity = dynamic(["iam.role.create","iam.role.permissions.add","user.session.access_admin_app","user.mfa.factor.suspend", "user.account.privilege.grant", "group.privilege.grant", "system.api_token.create", "user.session.impersonation.grant"]);
// Define the list of allowed admins to exclude from the alert. This can be modified to include specific admin accounts that are known to perform high-risk activities as part of their job function.
let AllowedAdmins = dynamic([]);
let AdminOperations = OktaSSO
| where actor_alternateId_s !in (AllowedAdmins)
| where eventType_s in (AdminActivity)
| where outcome_result_s =~ 'SUCCESS' 
| summarize  StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by  actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_userAgent_browser_s, client_device_s, client_userAgent_rawUserAgent_s, client_ipAddress_s, client_geographicalContext_country_s, client_geographicalContext_city_s, displayMessage_s, outcome_result_s, outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', ""), debugContext_debugData_threatSuspected_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, authenticationContext_externalSessionId_s;
let HighRiskEvents = OktaSSO
| where eventType_s in ('policy.evaluate_sign_on' , 'user.session.start')
| extend debugContext_debugData_logOnlySecurityData_s = column_ifexists('debugContext_debugData_logOnlySecurityData_s', '{}')
| where parse_json(tostring(parse_json(debugContext_debugData_logOnlySecurityData_s).risk)).level =~ "HIGH"
| where outcome_result_s =~ 'SUCCESS'
| extend reasons = tostring(parse_json(tostring(parse_json(debugContext_debugData_logOnlySecurityData_s).risk)).reasons)
| summarize  StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by  actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_userAgent_browser_s, client_device_s, client_userAgent_rawUserAgent_s, client_ipAddress_s, client_geographicalContext_country_s, client_geographicalContext_city_s, displayMessage_s, outcome_result_s, outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', ""), debugContext_debugData_threatSuspected_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, authenticationContext_externalSessionId_s, reasons;
AdminOperations
| join kind=inner (HighRiskEvents) on actor_displayName_s, client_ipAddress_s, authenticationContext_externalSessionId_s
| project StartTime, EndTime, actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_userAgent_browser_s, client_device_s, client_userAgent_rawUserAgent_s, client_ipAddress_s, client_geographicalContext_country_s, client_geographicalContext_city_s, displayMessage_s, outcome_result_s, outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', ""), debugContext_debugData_threatSuspected_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, authenticationContext_externalSessionId_s, reasons
| extend AccountName = tostring(split(actor_alternateId_s, "@")[0]), AccountUPNSuffix = tostring(split(actor_alternateId_s, "@")[1])

YAML

entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountName
    identifier: Name
  - columnName: AccountUPNSuffix
    identifier: UPNSuffix
- entityType: IP
  fieldMappings:
  - columnName: client_ipAddress_s
    identifier: Address
query: |
  let AdminActivity = dynamic(["iam.role.create","iam.role.permissions.add","user.session.access_admin_app","user.mfa.factor.suspend", "user.account.privilege.grant", "group.privilege.grant", "system.api_token.create", "user.session.impersonation.grant"]);
  // Define the list of allowed admins to exclude from the alert. This can be modified to include specific admin accounts that are known to perform high-risk activities as part of their job function.
  let AllowedAdmins = dynamic([]);
  let AdminOperations = OktaSSO
  | where actor_alternateId_s !in (AllowedAdmins)
  | where eventType_s in (AdminActivity)
  | where outcome_result_s =~ 'SUCCESS' 
  | summarize  StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by  actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_userAgent_browser_s, client_device_s, client_userAgent_rawUserAgent_s, client_ipAddress_s, client_geographicalContext_country_s, client_geographicalContext_city_s, displayMessage_s, outcome_result_s, outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', ""), debugContext_debugData_threatSuspected_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, authenticationContext_externalSessionId_s;
  let HighRiskEvents = OktaSSO
  | where eventType_s in ('policy.evaluate_sign_on' , 'user.session.start')
  | extend debugContext_debugData_logOnlySecurityData_s = column_ifexists('debugContext_debugData_logOnlySecurityData_s', '{}')
  | where parse_json(tostring(parse_json(debugContext_debugData_logOnlySecurityData_s).risk)).level =~ "HIGH"
  | where outcome_result_s =~ 'SUCCESS'
  | extend reasons = tostring(parse_json(tostring(parse_json(debugContext_debugData_logOnlySecurityData_s).risk)).reasons)
  | summarize  StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by  actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_userAgent_browser_s, client_device_s, client_userAgent_rawUserAgent_s, client_ipAddress_s, client_geographicalContext_country_s, client_geographicalContext_city_s, displayMessage_s, outcome_result_s, outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', ""), debugContext_debugData_threatSuspected_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, authenticationContext_externalSessionId_s, reasons;
  AdminOperations
  | join kind=inner (HighRiskEvents) on actor_displayName_s, client_ipAddress_s, authenticationContext_externalSessionId_s
  | project StartTime, EndTime, actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_userAgent_browser_s, client_device_s, client_userAgent_rawUserAgent_s, client_ipAddress_s, client_geographicalContext_country_s, client_geographicalContext_city_s, displayMessage_s, outcome_result_s, outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', ""), debugContext_debugData_threatSuspected_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, authenticationContext_externalSessionId_s, reasons
  | extend AccountName = tostring(split(actor_alternateId_s, "@")[0]), AccountUPNSuffix = tostring(split(actor_alternateId_s, "@")[1])
id: 9f82a735-ae43-4c03-afb4-d5d153e1ace1
queryFrequency: 1h
alertDetailsOverride:
  alertDisplayNameFormat: High-Risk admin activity by {{actor_displayName_s}} from IP {{client_ipAddress_s}}
  alertDescriptionFormat: High-risk Okta activity by {{actor_displayName_s}} from IP {{client_ipAddress_s}} correlated with admin action during session {{authenticationContext_externalSessionId_s}}
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Okta%20Single%20Sign-On/Analytic%20Rules/HighRiskAdminActivity.yaml
version: 1.1.2
severity: Medium
relevantTechniques:
- T1098
- T1078.004
name: High-Risk Admin Activity
kind: Scheduled
tactics:
- Persistence
- PrivilegeEscalation
requiredDataConnectors:
- dataTypes:
  - Okta_CL
  connectorId: OktaSSO
- dataTypes:
  - OktaSSO
  connectorId: OktaSSOv2
description: |
  The Okta risk engine auto-assigns risk levels to each login attempt. This rule identifies successful admin operations that correlate with successful high-risk Okta authentication or session start events.
customDetails:
  UserAgent: client_userAgent_rawUserAgent_s
  AdminDeviceOS: client_userAgent_os_s
  SessionId: authenticationContext_externalSessionId_s
  AdminDevice: client_device_s
  AdminDisplayName: actor_displayName_s
triggerOperator: gt
triggerThreshold: 0
queryPeriod: 1h

ARM

{
  "$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/9f82a735-ae43-4c03-afb4-d5d153e1ace1')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9f82a735-ae43-4c03-afb4-d5d153e1ace1')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "High-risk Okta activity by {{actor_displayName_s}} from IP {{client_ipAddress_s}} correlated with admin action during session {{authenticationContext_externalSessionId_s}}",
          "alertDisplayNameFormat": "High-Risk admin activity by {{actor_displayName_s}} from IP {{client_ipAddress_s}}"
        },
        "alertRuleTemplateName": "9f82a735-ae43-4c03-afb4-d5d153e1ace1",
        "customDetails": {
          "AdminDevice": "client_device_s",
          "AdminDeviceOS": "client_userAgent_os_s",
          "AdminDisplayName": "actor_displayName_s",
          "SessionId": "authenticationContext_externalSessionId_s",
          "UserAgent": "client_userAgent_rawUserAgent_s"
        },
        "description": "The Okta risk engine auto-assigns risk levels to each login attempt. This rule identifies successful admin operations that correlate with successful high-risk Okta authentication or session start events.\n",
        "displayName": "High-Risk Admin Activity",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountUPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "client_ipAddress_s",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Okta%20Single%20Sign-On/Analytic%20Rules/HighRiskAdminActivity.yaml",
        "query": "let AdminActivity = dynamic([\"iam.role.create\",\"iam.role.permissions.add\",\"user.session.access_admin_app\",\"user.mfa.factor.suspend\", \"user.account.privilege.grant\", \"group.privilege.grant\", \"system.api_token.create\", \"user.session.impersonation.grant\"]);\n// Define the list of allowed admins to exclude from the alert. This can be modified to include specific admin accounts that are known to perform high-risk activities as part of their job function.\nlet AllowedAdmins = dynamic([]);\nlet AdminOperations = OktaSSO\n| where actor_alternateId_s !in (AllowedAdmins)\n| where eventType_s in (AdminActivity)\n| where outcome_result_s =~ 'SUCCESS' \n| summarize  StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by  actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_userAgent_browser_s, client_device_s, client_userAgent_rawUserAgent_s, client_ipAddress_s, client_geographicalContext_country_s, client_geographicalContext_city_s, displayMessage_s, outcome_result_s, outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', \"\"), debugContext_debugData_threatSuspected_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, authenticationContext_externalSessionId_s;\nlet HighRiskEvents = OktaSSO\n| where eventType_s in ('policy.evaluate_sign_on' , 'user.session.start')\n| extend debugContext_debugData_logOnlySecurityData_s = column_ifexists('debugContext_debugData_logOnlySecurityData_s', '{}')\n| where parse_json(tostring(parse_json(debugContext_debugData_logOnlySecurityData_s).risk)).level =~ \"HIGH\"\n| where outcome_result_s =~ 'SUCCESS'\n| extend reasons = tostring(parse_json(tostring(parse_json(debugContext_debugData_logOnlySecurityData_s).risk)).reasons)\n| summarize  StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by  actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_userAgent_browser_s, client_device_s, client_userAgent_rawUserAgent_s, client_ipAddress_s, client_geographicalContext_country_s, client_geographicalContext_city_s, displayMessage_s, outcome_result_s, outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', \"\"), debugContext_debugData_threatSuspected_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, authenticationContext_externalSessionId_s, reasons;\nAdminOperations\n| join kind=inner (HighRiskEvents) on actor_displayName_s, client_ipAddress_s, authenticationContext_externalSessionId_s\n| project StartTime, EndTime, actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_userAgent_browser_s, client_device_s, client_userAgent_rawUserAgent_s, client_ipAddress_s, client_geographicalContext_country_s, client_geographicalContext_city_s, displayMessage_s, outcome_result_s, outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', \"\"), debugContext_debugData_threatSuspected_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, authenticationContext_externalSessionId_s, reasons\n| extend AccountName = tostring(split(actor_alternateId_s, \"@\")[0]), AccountUPNSuffix = tostring(split(actor_alternateId_s, \"@\")[1])\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [
          "T1078.004"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Persistence",
          "PrivilegeEscalation"
        ],
        "techniques": [
          "T1078",
          "T1098"
        ],
        "templateVersion": "1.1.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}