Device Registration from Malicious IP

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Id	e36c6bd6-f86a-4282-93a5-b4a1b48dd849
Rulename	Device Registration from Malicious IP
Description	This query identifies Device Registration from IP addresses identified as malicious by Okta ThreatInsight.
Severity	High
Tactics	Persistence
Techniques	T1098
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 Single Sign-On/Analytic Rules/DeviceRegistrationMaliciousIP.yaml
Version	1.1.1
Arm template	e36c6bd6-f86a-4282-93a5-b4a1b48dd849.json

KQL

let Events = dynamic(["device.enrollment.create"]);
let ThreatInsightOperations = dynamic(["security.threat.detected", "security.attack.start", "security.attack.end" ]);
let DeviceRegistrations =  OktaSSO
| where eventType_s in (Events)
| where outcome_result_s == "SUCCESS"
| extend oktaDeviceId_ = tostring(parse_json(tostring(parse_json(target_s)[0].detailEntry)).oktaDeviceId), NewDevice_osPlatform = tostring(parse_json(tostring(parse_json(target_s)[0].detailEntry)).osPlatform),  NewDevice_osVersion = tostring(parse_json(tostring(parse_json(target_s)[0].detailEntry)).osVersion), displayName_ = tostring(parse_json(target_s)[0].displayName)
| extend Location = strcat(client_geographicalContext_city_s,  " | ", client_geographicalContext_state_s," | ", client_geographicalContext_country_s)
| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_ipAddress_s, displayMessage_s, outcome_result_s,
outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', ""), column_ifexists('debugContext_debugData_threatSuspected_s',""), client_userAgent_rawUserAgent_s,client_userAgent_browser_s, severity_s, NewDevice_osPlatform, NewDevice_osVersion, eventType_s, Location ;
let ThreatInsightEvents = OktaSSO
| where eventType_s in (ThreatInsightOperations)
| extend SuspiciousIP = actor_displayName_s
| project TimeGenerated, column_ifexists('debugContext_debugData_threatDetections_s', ""), client_userAgent_rawUserAgent_s, severity_s, outcome_result_s, eventType_s, displayMessage_s, SuspiciousIP, transaction_id_s;
DeviceRegistrations 
| join kind=inner (ThreatInsightEvents) on $left.client_ipAddress_s == $right.SuspiciousIP

YAML

queryFrequency: 1h
id: e36c6bd6-f86a-4282-93a5-b4a1b48dd849
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Okta Single Sign-On/Analytic Rules/DeviceRegistrationMaliciousIP.yaml
query: |
  let Events = dynamic(["device.enrollment.create"]);
  let ThreatInsightOperations = dynamic(["security.threat.detected", "security.attack.start", "security.attack.end" ]);
  let DeviceRegistrations =  OktaSSO
  | where eventType_s in (Events)
  | where outcome_result_s == "SUCCESS"
  | extend oktaDeviceId_ = tostring(parse_json(tostring(parse_json(target_s)[0].detailEntry)).oktaDeviceId), NewDevice_osPlatform = tostring(parse_json(tostring(parse_json(target_s)[0].detailEntry)).osPlatform),  NewDevice_osVersion = tostring(parse_json(tostring(parse_json(target_s)[0].detailEntry)).osVersion), displayName_ = tostring(parse_json(target_s)[0].displayName)
  | extend Location = strcat(client_geographicalContext_city_s,  " | ", client_geographicalContext_state_s," | ", client_geographicalContext_country_s)
  | summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by actor_alternateId_s, actor_displayName_s, client_userAgent_os_s, client_ipAddress_s, displayMessage_s, outcome_result_s,
  outcome_reason_s, column_ifexists('debugContext_debugData_logOnlySecurityData_s', ""), column_ifexists('debugContext_debugData_threatSuspected_s',""), client_userAgent_rawUserAgent_s,client_userAgent_browser_s, severity_s, NewDevice_osPlatform, NewDevice_osVersion, eventType_s, Location ;
  let ThreatInsightEvents = OktaSSO
  | where eventType_s in (ThreatInsightOperations)
  | extend SuspiciousIP = actor_displayName_s
  | project TimeGenerated, column_ifexists('debugContext_debugData_threatDetections_s', ""), client_userAgent_rawUserAgent_s, severity_s, outcome_result_s, eventType_s, displayMessage_s, SuspiciousIP, transaction_id_s;
  DeviceRegistrations 
  | join kind=inner (ThreatInsightEvents) on $left.client_ipAddress_s == $right.SuspiciousIP  
queryPeriod: 1h
kind: Scheduled
status: Available
name: Device Registration from Malicious IP
triggerThreshold: 0
relevantTechniques:
- T1098
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: actor_alternateId_s
  - identifier: DisplayName
    columnName: actor_displayName_s
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: client_ipAddress_s
  entityType: IP
requiredDataConnectors:
- connectorId: OktaSSO
  dataTypes:
  - Okta_CL
- connectorId: OktaSSOv2
  dataTypes:
  - OktaSSO
version: 1.1.1
severity: High
description: |
    'This query identifies Device Registration from IP addresses identified as malicious by Okta ThreatInsight.'
tactics:
- Persistence

ARM