Tenablead Password Spraying

// For the query to work properly, make sure you have imported the afad_parser.kql parser into the workspace
// Retrieve the parser here: https://raw.githubusercontent.com/tenable/Azure-Sentinel/Tenable.ad-connector/Solutions/TenableAD/Parsers/afad_parser.kql
// Then, create the Kusto Function with alias afad_parser
afad_parser
  | where MessageType == 2 and Codename == "Password Spraying"
  | extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))

queryPeriod: 2h
entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: DnsDomain
  entityType: Host
relevantTechniques:
- T1110.003
severity: High
requiredDataConnectors:
- connectorId: Tenable.ad
  dataTypes:
  - Tenable_ad_CL
id: 29d350db-0ac0-4f4c-92ff-dac0f6335612
triggerOperator: gt
kind: Scheduled
query: |
  // For the query to work properly, make sure you have imported the afad_parser.kql parser into the workspace
  // Retrieve the parser here: https://raw.githubusercontent.com/tenable/Azure-Sentinel/Tenable.ad-connector/Solutions/TenableAD/Parsers/afad_parser.kql
  // Then, create the Kusto Function with alias afad_parser
  afad_parser
    | where MessageType == 2 and Codename == "Password Spraying"
    | extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))  
tactics:
- CredentialAccess
triggerThreshold: 0
queryFrequency: 2h
description: |
    'Searches for Password spraying attacks.'
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/TenableAD/Analytic Rules/TenableAdPasswordSpraying.yaml
name: Tenable.ad Password Spraying
version: 1.0.1

{
  "$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/29d350db-0ac0-4f4c-92ff-dac0f6335612')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/29d350db-0ac0-4f4c-92ff-dac0f6335612')]",
      "properties": {
        "alertRuleTemplateName": "29d350db-0ac0-4f4c-92ff-dac0f6335612",
        "customDetails": null,
        "description": "'Searches for Password spraying attacks.'\n",
        "displayName": "Tenable.ad Password Spraying",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "DnsDomain",
                "identifier": "DnsDomain"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/TenableAD/Analytic Rules/TenableAdPasswordSpraying.yaml",
        "query": "// For the query to work properly, make sure you have imported the afad_parser.kql parser into the workspace\n// Retrieve the parser here: https://raw.githubusercontent.com/tenable/Azure-Sentinel/Tenable.ad-connector/Solutions/TenableAD/Parsers/afad_parser.kql\n// Then, create the Kusto Function with alias afad_parser\nafad_parser\n  | where MessageType == 2 and Codename == \"Password Spraying\"\n  | extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))\n",
        "queryFrequency": "PT2H",
        "queryPeriod": "PT2H",
        "severity": "High",
        "subTechniques": [
          "T1110.003"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess"
        ],
        "techniques": [
          "T1110"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}