Palo Alto Prisma Cloud - High severity alert opened for several days

PaloAltoPrismaCloud
| where Reason =~ 'NEW_ALERT'
| where AlertSeverity =~ 'high'
| where Status =~ 'open'
| extend alert_time = now() - TimeGenerated
| where alert_time > 1d
| extend ['Opened Days'] = strcat('Alert opened for ', strcat(toint(alert_time / 1d), ' days'))
| project AlertMessage, AlertSeverity, ['Opened Days'], ResourceId, UserName
| extend AccountCustomEntity = UserName

triggerOperator: gt
id: c5bf680f-fa37-47c3-9f38-e839a9b99c05
queryFrequency: 1h
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
requiredDataConnectors:
- dataTypes:
  - PaloAltoPrismaCloud
  connectorId: PaloAltoPrismaCloud
severity: Medium
triggerThreshold: 0
kind: Scheduled
queryPeriod: 1h
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoPrismaCloud/Analytic Rules/PaloAltoPrismaCloudHighSeverityAlertOpenedForXDays.yaml
query: |
  PaloAltoPrismaCloud
  | where Reason =~ 'NEW_ALERT'
  | where AlertSeverity =~ 'high'
  | where Status =~ 'open'
  | extend alert_time = now() - TimeGenerated
  | where alert_time > 1d
  | extend ['Opened Days'] = strcat('Alert opened for ', strcat(toint(alert_time / 1d), ' days'))
  | project AlertMessage, AlertSeverity, ['Opened Days'], ResourceId, UserName
  | extend AccountCustomEntity = UserName  
description: |
    'Detects high severity alert which is opened for several days.'
name: Palo Alto Prisma Cloud - High severity alert opened for several days
relevantTechniques:
- T1133
tactics:
- InitialAccess
version: 1.0.0

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/c5bf680f-fa37-47c3-9f38-e839a9b99c05')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c5bf680f-fa37-47c3-9f38-e839a9b99c05')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "Palo Alto Prisma Cloud - High severity alert opened for several days",
        "description": "'Detects high severity alert which is opened for several days.'\n",
        "severity": "Medium",
        "enabled": true,
        "query": "PaloAltoPrismaCloud\n| where Reason =~ 'NEW_ALERT'\n| where AlertSeverity =~ 'high'\n| where Status =~ 'open'\n| extend alert_time = now() - TimeGenerated\n| where alert_time > 1d\n| extend ['Opened Days'] = strcat('Alert opened for ', strcat(toint(alert_time / 1d), ' days'))\n| project AlertMessage, AlertSeverity, ['Opened Days'], ResourceId, UserName\n| extend AccountCustomEntity = UserName\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1133"
        ],
        "alertRuleTemplateName": "c5bf680f-fa37-47c3-9f38-e839a9b99c05",
        "customDetails": null,
        "entityMappings": [
          {
            "fieldMappings": [
              {
                "identifier": "Name",
                "columnName": "AccountCustomEntity"
              }
            ],
            "entityType": "Account"
          }
        ],
        "templateVersion": "1.0.0",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoPrismaCloud/Analytic Rules/PaloAltoPrismaCloudHighSeverityAlertOpenedForXDays.yaml"
      }
    }
  ]
}