Illusive Incidents Analytic Rule

Back


Id	1a7dbcf6-21a2-4255-84b2-c8dbbdca4630
Rulename	Illusive Incidents Analytic Rule
Description	Create a Microsoft Sentinel incident upon a new Illusive alert (incident) and associate all related Illusive events to the relevant Microsoft Sentinel alert. This is done by filtering and processing Illusive Syslog messages.
Severity	Medium
Tactics	Persistence PrivilegeEscalation DefenseEvasion CredentialAccess LateralMovement
Techniques	T1078 T1098 T1548 T1021
Required data connectors	CefAma Illusive illusiveAttackManagementSystemAma
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/Illusive Platform/Analytic Rules/Illusive_Detection_Query.yaml
Version	1.0.5
Arm template	1a7dbcf6-21a2-4255-84b2-c8dbbdca4630.json

KQL

CommonSecurityLog
| where DeviceProduct == "illusive"
| extend DeviceCustomNumber2 = coalesce(column_ifexists("FieldDeviceCustomNumber2", long(null)),DeviceCustomNumber2)
| summarize arg_max(TimeGenerated, *) by DeviceCustomNumber2, AdditionalExtensions, TimeGenerated
| extend Category = extract(@'cat=([^;]+)(\;|$)', 1, AdditionalExtensions), HasForensics = extract(@'cs7=([^;]+)(\;|$)', 1, AdditionalExtensions)
| extend Category = coalesce(column_ifexists("DeviceEventCategory",""),Category)	
| where Category == "illusive:alerts"
| extend IncidentId = DeviceCustomNumber2, IncidentURL = DeviceCustomString5
| project TimeGenerated, SourceIP, SourceHostName,Computer , DeviceEventClassID ,HasForensics ,SourceUserName, Activity, DeviceAddress,  DestinationHostName, DestinationUserName, IncidentId, IncidentURL

YAML

query: |
  CommonSecurityLog
  | where DeviceProduct == "illusive"
  | extend DeviceCustomNumber2 = coalesce(column_ifexists("FieldDeviceCustomNumber2", long(null)),DeviceCustomNumber2)
  | summarize arg_max(TimeGenerated, *) by DeviceCustomNumber2, AdditionalExtensions, TimeGenerated
  | extend Category = extract(@'cat=([^;]+)(\;|$)', 1, AdditionalExtensions), HasForensics = extract(@'cs7=([^;]+)(\;|$)', 1, AdditionalExtensions)
  | extend Category = coalesce(column_ifexists("DeviceEventCategory",""),Category)	
  | where Category == "illusive:alerts"
  | extend IncidentId = DeviceCustomNumber2, IncidentURL = DeviceCustomString5
  | project TimeGenerated, SourceIP, SourceHostName,Computer , DeviceEventClassID ,HasForensics ,SourceUserName, Activity, DeviceAddress,  DestinationHostName, DestinationUserName, IncidentId, IncidentURL  
relevantTechniques:
- T1078
- T1098
- T1548
- T1021
name: Illusive Incidents Analytic Rule
severity: Medium
triggerThreshold: 0
description: |
    'Create a Microsoft Sentinel incident upon a new Illusive alert (incident) and associate all related Illusive events to the relevant Microsoft Sentinel alert. This is done by filtering and processing Illusive Syslog messages.'
status: Available
triggerOperator: gt
tactics:
- Persistence
- PrivilegeEscalation
- DefenseEvasion
- CredentialAccess
- LateralMovement
entityMappings:
- fieldMappings:
  - columnName: SourceIP
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: SourceHostName
    identifier: FullName
  entityType: Host
- fieldMappings:
  - columnName: Computer
    identifier: OMSAgentID
  entityType: Host
customDetails:
  IllusiveIncidentId: IncidentId
  Account: SourceUserName
  HasForensics: HasForensics
requiredDataConnectors:
- connectorId: Illusive
  dataTypes:
  - CommonSecurityLog
- connectorId: illusiveAttackManagementSystemAma
  dataTypes:
  - CommonSecurityLog
- connectorId: CefAma
  dataTypes:
  - CommonSecurityLog
eventGroupingSettings:
  aggregationKind: AlertPerResult
alertDetailsOverride:
  alertDescriptionFormat: |
        Illusive Incident {{IncidentId}} generated at {{TimeGenerated}}
  alertDisplayNameFormat: |
        Illusive Incident: {{IncidentId}}
id: 1a7dbcf6-21a2-4255-84b2-c8dbbdca4630
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Illusive Platform/Analytic Rules/Illusive_Detection_Query.yaml
queryPeriod: 5m
queryFrequency: 5m
version: 1.0.5
kind: Scheduled

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/1a7dbcf6-21a2-4255-84b2-c8dbbdca4630')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/1a7dbcf6-21a2-4255-84b2-c8dbbdca4630')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "Illusive Incident {{IncidentId}} generated at {{TimeGenerated}}\n",
          "alertDisplayNameFormat": "Illusive Incident: {{IncidentId}}\n"
        },
        "alertRuleTemplateName": "1a7dbcf6-21a2-4255-84b2-c8dbbdca4630",
        "customDetails": {
          "Account": "SourceUserName",
          "HasForensics": "HasForensics",
          "IllusiveIncidentId": "IncidentId"
        },
        "description": "'Create a Microsoft Sentinel incident upon a new Illusive alert (incident) and associate all related Illusive events to the relevant Microsoft Sentinel alert. This is done by filtering and processing Illusive Syslog messages.'\n",
        "displayName": "Illusive Incidents Analytic Rule",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SourceIP",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "SourceHostName",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "Computer",
                "identifier": "OMSAgentID"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Illusive Platform/Analytic Rules/Illusive_Detection_Query.yaml",
        "query": "CommonSecurityLog\n| where DeviceProduct == \"illusive\"\n| extend DeviceCustomNumber2 = coalesce(column_ifexists(\"FieldDeviceCustomNumber2\", long(null)),DeviceCustomNumber2)\n| summarize arg_max(TimeGenerated, *) by DeviceCustomNumber2, AdditionalExtensions, TimeGenerated\n| extend Category = extract(@'cat=([^;]+)(\\;|$)', 1, AdditionalExtensions), HasForensics = extract(@'cs7=([^;]+)(\\;|$)', 1, AdditionalExtensions)\n| extend Category = coalesce(column_ifexists(\"DeviceEventCategory\",\"\"),Category)\t\n| where Category == \"illusive:alerts\"\n| extend IncidentId = DeviceCustomNumber2, IncidentURL = DeviceCustomString5\n| project TimeGenerated, SourceIP, SourceHostName,Computer , DeviceEventClassID ,HasForensics ,SourceUserName, Activity, DeviceAddress,  DestinationHostName, DestinationUserName, IncidentId, IncidentURL\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess",
          "DefenseEvasion",
          "LateralMovement",
          "Persistence",
          "PrivilegeEscalation"
        ],
        "techniques": [
          "T1021",
          "T1078",
          "T1098",
          "T1548"
        ],
        "templateVersion": "1.0.5",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}