ECR image scan findings high or critical

AWSCloudTrail
| where EventName == "DescribeImageScanFindings" and isempty(ErrorCode) and isempty(ErrorMessage)
| extend repoName = tostring(parse_json(ResponseElements).repositoryName)
| extend imageId = tostring(parse_json(ResponseElements).imageId.imageDigest)
| extend Critical = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.CRITICAL)
| extend High = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.HIGH)
| where Critical > 0 or High > 0
| extend UserIdentityUserName = iff(isnotempty(UserIdentityUserName), UserIdentityUserName, tostring(split(UserIdentityArn,'/')[-1]))
| extend timestamp = TimeGenerated, IPCustomEntity = SourceIpAddress, AccountCustomEntity = UserIdentityUserName 

queryFrequency: 1d
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: FullName
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
severity: High
triggerThreshold: 0
relevantTechniques:
- T1204
query: |
  AWSCloudTrail
  | where EventName == "DescribeImageScanFindings" and isempty(ErrorCode) and isempty(ErrorMessage)
  | extend repoName = tostring(parse_json(ResponseElements).repositoryName)
  | extend imageId = tostring(parse_json(ResponseElements).imageId.imageDigest)
  | extend Critical = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.CRITICAL)
  | extend High = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.HIGH)
  | where Critical > 0 or High > 0
  | extend UserIdentityUserName = iff(isnotempty(UserIdentityUserName), UserIdentityUserName, tostring(split(UserIdentityArn,'/')[-1]))
  | extend timestamp = TimeGenerated, IPCustomEntity = SourceIpAddress, AccountCustomEntity = UserIdentityUserName   
id: f6928301-56da-4d2c-aabe-e1a552bc8892
triggerOperator: gt
version: 1.0.1
requiredDataConnectors:
- connectorId: AWS
  dataTypes:
  - AWSCloudTrail
description: |
    'AWS ECR Image scan detected critical or high-severity vulnerabilities in your container image.'
queryPeriod: 1d
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_ECRContainerHigh.yaml
status: Available
name: ECR image scan findings high or critical
tactics:
- Execution
kind: Scheduled

{
  "$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/f6928301-56da-4d2c-aabe-e1a552bc8892')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/f6928301-56da-4d2c-aabe-e1a552bc8892')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "ECR image scan findings high or critical",
        "description": "'AWS ECR Image scan detected critical or high-severity vulnerabilities in your container image.'\n",
        "severity": "High",
        "enabled": true,
        "query": "AWSCloudTrail\n| where EventName == \"DescribeImageScanFindings\" and isempty(ErrorCode) and isempty(ErrorMessage)\n| extend repoName = tostring(parse_json(ResponseElements).repositoryName)\n| extend imageId = tostring(parse_json(ResponseElements).imageId.imageDigest)\n| extend Critical = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.CRITICAL)\n| extend High = toint(parse_json(ResponseElements).imageScanFindings.findingSeverityCounts.HIGH)\n| where Critical > 0 or High > 0\n| extend UserIdentityUserName = iff(isnotempty(UserIdentityUserName), UserIdentityUserName, tostring(split(UserIdentityArn,'/')[-1]))\n| extend timestamp = TimeGenerated, IPCustomEntity = SourceIpAddress, AccountCustomEntity = UserIdentityUserName \n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution"
        ],
        "techniques": [
          "T1204"
        ],
        "alertRuleTemplateName": "f6928301-56da-4d2c-aabe-e1a552bc8892",
        "customDetails": null,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "identifier": "FullName",
                "columnName": "AccountCustomEntity"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "identifier": "Address",
                "columnName": "IPCustomEntity"
              }
            ]
          }
        ],
        "status": "Available",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_ECRContainerHigh.yaml",
        "templateVersion": "1.0.1"
      }
    }
  ]
}