Detection rules › Kusto

High-Risk Admin Activity

Status
available
Severity
medium
Time window
1h
Group by
actor_alternateId_s, actor_displayName_s, authenticationContext_externalSessionId_s, client_device_s, client_geographicalContext_city_s, client_geographicalContext_country_s, client_geographicalContext_geolocation_lat_d, client_geographicalContext_geolocation_lon_d, client_ipAddress_s, client_userAgent_browser_s, client_userAgent_os_s, client_userAgent_rawUserAgent_s, debugContext_debugData_threatSuspected_s, displayMessage_s, outcome_reason_s, outcome_result_s
Source
github.com/Azure/Azure-Sentinel

The Okta risk engine auto-assigns risk levels to each login attempt. This query identifies admin operations originating from events associated with high-risk profiles.

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1098 Account Manipulation

Event coverage

Rules detecting the same action

Other rules on this platform that filter on the same API call or operation.

Rule body kusto

id: 9f82a735-ae43-4c03-afb4-d5d153e1ace1
name: High-Risk Admin Activity
description: |
  'The Okta risk engine auto-assigns risk levels to each login attempt. This query identifies admin operations originating from events associated with high-risk profiles.'
severity: Medium
status: Available
requiredDataConnectors:
  - connectorId: OktaSSO
    dataTypes:
      - Okta_CL
  - connectorId: OktaSSOv2
    dataTypes:
      - OktaSSO
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Persistence
relevantTechniques:
  - T1098
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"]);
  let AdminOperations = OktaSSO
  | 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
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: Name
        columnName: actor_alternateId_s
      - identifier: DisplayName
        columnName: actor_displayName_s
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: client_ipAddress_s
customDetails:
  SessionId: authenticationContext_externalSessionId_s
version: 1.1.1
kind: Scheduled

Stages and Predicates

Let binding: AdminActivity

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"]);

Let binding: HighRiskEvents

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;

The stages below define let AdminOperations (the rule's main pipeline source).

Stage 1: source

OktaSSO

Stage 2: where

| where eventType_s in (AdminActivity)

References AdminActivity (defined above).

Stage 3: where

| where outcome_result_s =~ 'SUCCESS'

Stage 4: summarize

| 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

The stages below run on AdminOperations (the outer pipeline).

Stage 5: join

AdminOperations
| join kind=inner (HighRiskEvents) on actor_displayName_s, client_ipAddress_s, authenticationContext_externalSessionId_s

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
eventType_sin
  • group.privilege.grant transforms: cased
  • iam.role.create transforms: cased
  • iam.role.permissions.add transforms: cased
  • policy.evaluate_sign_on transforms: cased
  • system.api_token.create transforms: cased
  • user.account.privilege.grant transforms: cased
  • user.mfa.factor.suspend transforms: cased
  • user.session.access_admin_app transforms: cased
  • user.session.impersonation.grant transforms: cased
  • user.session.start transforms: cased
leveleq
  • HIGH
outcome_result_seq
  • SUCCESS

Output fields

Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.

FieldSource
EndTimesummarize
StartTimesummarize
actor_alternateId_ssummarize
actor_displayName_ssummarize
authenticationContext_externalSessionId_ssummarize
client_device_ssummarize
client_geographicalContext_city_ssummarize
client_geographicalContext_country_ssummarize
client_geographicalContext_geolocation_lat_dsummarize
client_geographicalContext_geolocation_lon_dsummarize
client_ipAddress_ssummarize
client_userAgent_browser_ssummarize
client_userAgent_os_ssummarize
client_userAgent_rawUserAgent_ssummarize
debugContext_debugData_threatSuspected_ssummarize
displayMessage_ssummarize
outcome_reason_ssummarize
outcome_result_ssummarize