Azure secure score block legacy authentication

SenservaPro_CL
| where ControlName_s == 'AzureSecureScoreBlockLegacyAuthentication'

status: Available
triggerOperator: gt
triggerThreshold: 0
name: Azure secure score block legacy authentication
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SenservaPro/Analytic Rules/BlockLegacyAuthentication.yaml
queryPeriod: 6h
severity: High
kind: Scheduled
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
queryFrequency: 6h
relevantTechniques:
- T1212
- T1556
requiredDataConnectors:
- dataTypes:
  - SenservaPro_CL
  connectorId: SenservaPro
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.'  
tactics:
- CredentialAccess
query: |
  SenservaPro_CL
  | where ControlName_s == 'AzureSecureScoreBlockLegacyAuthentication'  
id: C27BB559-28C5-4924-A7DA-3BF04CD02C8F
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/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"
    }
  ]
}