Ensure 'Configure the 'Block at First Sight' feature' is set to 'Enabled'

MediaNivel 1Automatizadaintune-defender

Descripción

This policy setting configures whether the device checks (in real time) with the Microsoft Active Protection Service (MAPS) before allowing certain content to be run or accessed. The block at first sight feature works when Microsoft Defender Antivirus encounters a suspicious but undetected file. It then queries the Microsoft cloud protection backend and applies heuristics, machine learning, and automated analysis of the file to determine whether the files are malicious. The recommended state for this setting is: Enabled. Audit: reads the registry value(s) behind this Defender policy (HKLM\SOFTWARE\Policies\Microsoft\Windows Defender) and prints compliant only when each satisfies the benchmark value. Policy delivered by Intune only appears here once it has been applied to the device.

Cómo se verifica

Método de auditoría: Registro de Windows

registry

$bad = @(); $v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet' -Name 'DisableBlockAtFirstSeen' -ErrorAction SilentlyContinue).'DisableBlockAtFirstSeen'; if (-not ($null -ne $v -and @(0) -contains [int64]$v)) { $bad += 'DisableBlockAtFirstSeen=' + $v }; if ($bad.Count -eq 0) { 'compliant' } else { 'non-compliant: ' + ($bad -join ', ') }

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

To establish the recommended configuration via configuration profiles, set the following Settings Catalog path to Enabled: Administrative Templates\Microsoft Defender Antivirus\MAPS\Configure the 'Block at First Sight' feature

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: intune-defenderintuneregistry
Referencia: CIS Microsoft Intune for Microsoft Defender Antivirus Benchmark v1.0.0 - 1.3.2 Ensure 'Configure the 'Block at First Sight' feature' is set to 'Enabled'

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target intune-defender