Create Incidents from IronDefense

Back


Id	3cf46cb9-99d5-42ee-a43c-7bd88ea394a1
Rulename	Create Incidents from IronDefense
Description	Creates incidents based on behavioral detections from IronDefense.
Severity	Medium
Required data connectors	IronNetIronDefense
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IronNet IronDefense/Analytic Rules/IronDefense_Detection_Query.yaml
Version	1.0.1
Arm template	3cf46cb9-99d5-42ee-a43c-7bd88ea394a1.json

KQL

CommonSecurityLog
| where DeviceProduct == "IronDefense"
| summarize arg_max(TimeGenerated, *) by DeviceCustomString4, DeviceCustomString2
| extend Category = coalesce(column_ifexists("DeviceEventCategory",""),extract(@'cat=([^;]+)(\;|$)', 1, AdditionalExtensions))	
| extend Subcategory = extract(@'subcat=([^;]+)(\;|$)', 1, AdditionalExtensions)
| extend AlertDescription = strcat(Category, ': ', Subcategory)
| extend Status = tostring(DeviceCustomString2)
| extend IronVueUrl = replace(@'\\', @'', tostring(DeviceCustomString3))

YAML

entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: DestinationIP
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: SourceIP
- entityType: Host
  fieldMappings:
  - identifier: FullName
    columnName: DestinationHostName
- entityType: Host
  fieldMappings:
  - identifier: FullName
    columnName: SourceHostName
- entityType: URL
  fieldMappings:
  - identifier: Url
    columnName: RequestURL
tactics: 
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: IronNetIronDefense
alertDetailsOverride:
  alertDisplayNameFormat: |
        {{Category}}: {{Subcategory}} ({{DeviceCustomString4}})
  alertDescriptionFormat: |
        IronDefense detected suspicious activity on {{TimeGenerated}} and categorized it as "{{AlertDescription}}".  View full details in IronVue: {{IronVueUrl}}
  alertSeverityColumnName: LogSeverity
id: 3cf46cb9-99d5-42ee-a43c-7bd88ea394a1
severity: Medium
eventGroupingSettings:
  aggregationKind: AlertPerResult
status: Available
customDetails:
  IronDefenseAlertId: DeviceCustomString4
  AlertCreatedTime: TimeGenerated
  AnalystSeverity: DeviceCustomString1
  IronDefenseStatus: Status
  IronVueUrl: IronVueUrl
  AnalystRating: LogSeverity
query: |
  CommonSecurityLog
  | where DeviceProduct == "IronDefense"
  | summarize arg_max(TimeGenerated, *) by DeviceCustomString4, DeviceCustomString2
  | extend Category = coalesce(column_ifexists("DeviceEventCategory",""),extract(@'cat=([^;]+)(\;|$)', 1, AdditionalExtensions))	
  | extend Subcategory = extract(@'subcat=([^;]+)(\;|$)', 1, AdditionalExtensions)
  | extend AlertDescription = strcat(Category, ': ', Subcategory)
  | extend Status = tostring(DeviceCustomString2)
  | extend IronVueUrl = replace(@'\\', @'', tostring(DeviceCustomString3))  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IronNet IronDefense/Analytic Rules/IronDefense_Detection_Query.yaml
kind: Scheduled
queryPeriod: 5m
version: 1.0.1
name: Create Incidents from IronDefense
queryFrequency: 5m
triggerThreshold: 0
relevantTechniques: 
description: |
    'Creates incidents based on behavioral detections from IronDefense.'
triggerOperator: gt

ARM