Critical Severity Incident | Microsoft Sentinel Analytic Rules

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Id	4f1c9e6e-8b6b-4d2a-9f3e-123456789abc
Rulename	Critical Severity Incident
Description	Triggers an incident for every Morphisec alert whose attacks severity is critical.
Severity	High
Tactics	Execution DefenseEvasion
Techniques	T1059 T1204
Required data connectors	MorphisecCCF
Kind	Scheduled
Query frequency	10m
Query period	10m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Morphisec/Analytic%20Rules/MorphisecCriticalSeverityIncident.yaml
Version	1.0.0
Arm template	4f1c9e6e-8b6b-4d2a-9f3e-123456789abc.json

KQL

MorphisecAlerts_CL
| where threatMessageArrivalTime >= ago(10m)
| where attackSeverity == "CRITICAL"
| summarize arg_max(threatMessageArrivalTime, *) by id

YAML

incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: 5h
    reopenClosedIncident: false
    enabled: false
    matchingMethod: AllEntities
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: hostname
    identifier: HostName
- entityType: Process
  fieldMappings:
  - columnName: processCommandLine
    identifier: CommandLine
query: |
  MorphisecAlerts_CL
  | where threatMessageArrivalTime >= ago(10m)
  | where attackSeverity == "CRITICAL"
  | summarize arg_max(threatMessageArrivalTime, *) by id
suppressionEnabled: false
eventGroupingSettings:
  aggregationKind: SingleAlert
id: 4f1c9e6e-8b6b-4d2a-9f3e-123456789abc
queryFrequency: 10m
alertDetailsOverride:
  alertDisplayNameFormat: 'Critical alert detected: {{threatSubType}}'
status: Available
suppressionDuration: 5h
version: 1.0.0
severity: High
relevantTechniques:
- T1059
- T1204
name: Critical Severity Incident
kind: Scheduled
tactics:
- Execution
- DefenseEvasion
requiredDataConnectors:
- dataTypes:
  - Morphisec
  connectorId: MorphisecCCF
description: |
  'Triggers an incident for every Morphisec alert whose attacks severity is critical.'
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Morphisec/Analytic%20Rules/MorphisecCriticalSeverityIncident.yaml
triggerOperator: gt
triggerThreshold: 0
queryPeriod: 10m

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/4f1c9e6e-8b6b-4d2a-9f3e-123456789abc')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/4f1c9e6e-8b6b-4d2a-9f3e-123456789abc')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDisplayNameFormat": "Critical alert detected: {{threatSubType}}"
        },
        "alertRuleTemplateName": "4f1c9e6e-8b6b-4d2a-9f3e-123456789abc",
        "customDetails": null,
        "description": "'Triggers an incident for every Morphisec alert whose attacks severity is critical.'\n",
        "displayName": "Critical Severity Incident",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "hostname",
                "identifier": "HostName"
              }
            ]
          },
          {
            "entityType": "Process",
            "fieldMappings": [
              {
                "columnName": "processCommandLine",
                "identifier": "CommandLine"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Morphisec/Analytic%20Rules/MorphisecCriticalSeverityIncident.yaml",
        "query": "MorphisecAlerts_CL\n| where threatMessageArrivalTime >= ago(10m)\n| where attackSeverity == \"CRITICAL\"\n| summarize arg_max(threatMessageArrivalTime, *) by id\n",
        "queryFrequency": "PT10M",
        "queryPeriod": "PT10M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion",
          "Execution"
        ],
        "techniques": [
          "T1059",
          "T1204"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}