Sentinel One - Multiple alerts on host

SentinelOne
| where ActivityType == 3608
| extend RuleName = extract(@'Custom Rule:\s(.*?)\sin Group', 1, EventOriginalMessage)
| extend DstHostname = extract(@'detected on\s(\S+)\.', 1, EventOriginalMessage)
| summarize count() by DstHostname, bin(TimeGenerated, 15m)
| where count_ > 1
| extend HostCustomEntity = DstHostname

entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: HostCustomEntity
name: Sentinel One - Multiple alerts on host
kind: Scheduled
triggerOperator: gt
status: Available
queryPeriod: 1h
requiredDataConnectors:
- connectorId: SentinelOne
  dataTypes:
  - SentinelOne
tactics:
- InitialAccess
query: |
  SentinelOne
  | where ActivityType == 3608
  | extend RuleName = extract(@'Custom Rule:\s(.*?)\sin Group', 1, EventOriginalMessage)
  | extend DstHostname = extract(@'detected on\s(\S+)\.', 1, EventOriginalMessage)
  | summarize count() by DstHostname, bin(TimeGenerated, 15m)
  | where count_ > 1
  | extend HostCustomEntity = DstHostname
description: |
  'Detects when multiple alerts received from same host.'
severity: High
id: 47e427e6-61bc-4e24-8d16-a12871b9f939
triggerThreshold: 0
queryFrequency: 1h
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SentinelOne/Analytic%20Rules/SentinelOneMultipleAlertsOnHost.yaml
version: 1.0.2
relevantTechniques:
- T1190

{
  "$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/47e427e6-61bc-4e24-8d16-a12871b9f939')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/47e427e6-61bc-4e24-8d16-a12871b9f939')]",
      "properties": {
        "alertRuleTemplateName": "47e427e6-61bc-4e24-8d16-a12871b9f939",
        "customDetails": null,
        "description": "'Detects when multiple alerts received from same host.'\n",
        "displayName": "Sentinel One - Multiple alerts on host",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostCustomEntity",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SentinelOne/Analytic%20Rules/SentinelOneMultipleAlertsOnHost.yaml",
        "query": "SentinelOne\n| where ActivityType == 3608\n| extend RuleName = extract(@'Custom Rule:\\s(.*?)\\sin Group', 1, EventOriginalMessage)\n| extend DstHostname = extract(@'detected on\\s(\\S+)\\.', 1, EventOriginalMessage)\n| summarize count() by DstHostname, bin(TimeGenerated, 15m)\n| where count_ > 1\n| extend HostCustomEntity = DstHostname\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1190"
        ],
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}