API - Password Cracking

let loginRec = apifirewall_log_1_CL
| where TimeGenerated >= ago(5m) 
| project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Request_Header_s, Response_Header_s, Errors_s, Type, UUID_g
| where Instance_Name_s == "Instance_2" and URI_Path_s has "/api/login?user=" and Status_d == 403;
let recCount = iff((toscalar(loginRec | count) > 10), 1, 0);
loginRec | take recCount

queryFrequency: 5m
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: Source_IP_s
    identifier: Address
- entityType: Host
  fieldMappings:
  - columnName: Hostname_s
    identifier: HostName
- entityType: Account
  fieldMappings:
  - columnName: Instance_Name_s
    identifier: FullName
severity: High
triggerThreshold: 0
relevantTechniques:
- T1110
- T1555
- T1187
query: |
  let loginRec = apifirewall_log_1_CL
  | where TimeGenerated >= ago(5m) 
  | project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Request_Header_s, Response_Header_s, Errors_s, Type, UUID_g
  | where Instance_Name_s == "Instance_2" and URI_Path_s has "/api/login?user=" and Status_d == 403;
  let recCount = iff((toscalar(loginRec | count) > 10), 1, 0);
  loginRec | take recCount  
eventGroupingSettings:
  aggregationKind: SingleAlert
id: d951d64d-0ecd-4675-8c79-6c870d5f72ac
triggerOperator: gt
version: 1.0.0
requiredDataConnectors:
- connectorId: 42CrunchAPIProtection
  dataTypes:
  - apifirewall_log_1_CL
customDetails: 
description: |
    '42Crunch API protection against password cracking'
queryPeriod: 5m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/42Crunch API Protection/Analytic Rules/APIPasswordCracking.yaml
status: Available
name: API - Password Cracking
tactics:
- CredentialAccess
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/d951d64d-0ecd-4675-8c79-6c870d5f72ac')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/d951d64d-0ecd-4675-8c79-6c870d5f72ac')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "API - Password Cracking",
        "description": "'42Crunch API protection against password cracking'\n",
        "severity": "High",
        "enabled": true,
        "query": "let loginRec = apifirewall_log_1_CL\n| where TimeGenerated >= ago(5m) \n| project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Request_Header_s, Response_Header_s, Errors_s, Type, UUID_g\n| where Instance_Name_s == \"Instance_2\" and URI_Path_s has \"/api/login?user=\" and Status_d == 403;\nlet recCount = iff((toscalar(loginRec | count) > 10), 1, 0);\nloginRec | take recCount\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess"
        ],
        "techniques": [
          "T1110",
          "T1555",
          "T1187"
        ],
        "alertRuleTemplateName": "d951d64d-0ecd-4675-8c79-6c870d5f72ac",
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "customDetails": null,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "identifier": "Address",
                "columnName": "Source_IP_s"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "identifier": "HostName",
                "columnName": "Hostname_s"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "identifier": "FullName",
                "columnName": "Instance_Name_s"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/42Crunch API Protection/Analytic Rules/APIPasswordCracking.yaml",
        "status": "Available",
        "templateVersion": "1.0.0"
      }
    }
  ]
}