Azure secure score block legacy authentication

SenservaPro_CL
| where ControlName_s == 'AzureSecureScoreBlockLegacyAuthentication'

tactics:
- CredentialAccess
relevantTechniques:
- T1212
- T1556
id: C27BB559-28C5-4924-A7DA-3BF04CD02C8F
severity: High
status: Available
name: Azure secure score block legacy authentication
requiredDataConnectors:
- connectorId: SenservaPro
  dataTypes:
  - SenservaPro_CL
query: |
  SenservaPro_CL
  | where ControlName_s == 'AzureSecureScoreBlockLegacyAuthentication'  
queryPeriod: 6h
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: ControlName_s
  - identifier: AadTenantId
    columnName: TenantId
  - identifier: DisplayName
    columnName: TenantDisplayName_s
- entityType: SecurityGroup
  fieldMappings:
  - identifier: DistinguishedName
    columnName: Group_s
- entityType: AzureResource
  fieldMappings:
  - identifier: ResourceId
    columnName: SourceSystem
triggerOperator: gt
triggerThreshold: 0
description: |
  'This query searches for most compromising sign-in attempts come from legacy authentication. 
   Older office clients such as Office 2010 do not support modern authentication and use legacy protocols such as IMAP, SMTP, and POP3. 
   Legacy authentication does not support multi-factor authentication (MFA).
   Even if an MFA policy is configured in your environment, bad actors can bypass these enforcements through legacy protocols.'  
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SenservaPro/Analytic Rules/BlockLegacyAuthentication.yaml
queryFrequency: 6h
kind: Scheduled

{
  "$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/C27BB559-28C5-4924-A7DA-3BF04CD02C8F')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/C27BB559-28C5-4924-A7DA-3BF04CD02C8F')]",
      "properties": {
        "alertRuleTemplateName": "C27BB559-28C5-4924-A7DA-3BF04CD02C8F",
        "customDetails": null,
        "description": "'This query searches for most compromising sign-in attempts come from legacy authentication. \n Older office clients such as Office 2010 do not support modern authentication and use legacy protocols such as IMAP, SMTP, and POP3. \n Legacy authentication does not support multi-factor authentication (MFA).\n Even if an MFA policy is configured in your environment, bad actors can bypass these enforcements through legacy protocols.'\n",
        "displayName": "Azure secure score block legacy authentication",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ControlName_s",
                "identifier": "Name"
              },
              {
                "columnName": "TenantId",
                "identifier": "AadTenantId"
              },
              {
                "columnName": "TenantDisplayName_s",
                "identifier": "DisplayName"
              }
            ]
          },
          {
            "entityType": "SecurityGroup",
            "fieldMappings": [
              {
                "columnName": "Group_s",
                "identifier": "DistinguishedName"
              }
            ]
          },
          {
            "entityType": "AzureResource",
            "fieldMappings": [
              {
                "columnName": "SourceSystem",
                "identifier": "ResourceId"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SenservaPro/Analytic Rules/BlockLegacyAuthentication.yaml",
        "query": "SenservaPro_CL\n| where ControlName_s == 'AzureSecureScoreBlockLegacyAuthentication'\n",
        "queryFrequency": "PT6H",
        "queryPeriod": "PT6H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess"
        ],
        "techniques": [
          "T1212",
          "T1556"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}