Ensure 'ASR: Block executable content from email client and webmail' is set to 'Block'

中级别 1自动化intune-defender

说明

This rule blocks email opened within the Microsoft Outlook application, or Outlook.com and other popular webmail providers from propagating the following file types: • Executable files (such as .exe, .dll, or .scr) • Script files (such as a PowerShell .ps1, Visual Basic .vbs, or JavaScript .js file) The recommended state for this setting is: Block. Audit: reads the Intune PolicyManager ASR rules value (via the WinningProvider GUID) and requires the rule entry be9ba2d9-53ea-4cdc-84e5-9b1eeee46550=1 (Block).

检查方式

审计方法: Windows 注册表

registry

$p = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\current\device\Defender' -Name 'AttackSurfaceReductionRules_WinningProvider' -ErrorAction SilentlyContinue).'AttackSurfaceReductionRules_WinningProvider'; if (-not $p) { 'non-compliant: no ASR WinningProvider' } else { $p = ([string]$p).Trim('{}'); $k = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\Providers\' + $p + '\default\Device\Defender'; if (-not (Test-Path $k)) { $k = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\Providers\{' + $p + '}\default\Device\Defender' }; $v = (Get-ItemProperty -Path $k -Name 'AttackSurfaceReductionRules' -ErrorAction SilentlyContinue).'AttackSurfaceReductionRules'; $have = @(([string]$v) -split '\|' | ForEach-Object { $_.Trim().ToLower() }); $want = @('be9ba2d9-53ea-4cdc-84e5-9b1eeee46550=1'); if (@($want | Where-Object { $have -contains $_ }).Count -gt 0) { 'compliant' } else { 'non-compliant: ' + $v } }

预期输出: compliant

修复方式

修复方法: 操作指南或基础设施补丁

To establish the recommended configuration via configuration profiles, set the following Settings Catalog path to Block. Defender\Block executable content from email client and webmail

属性

操作系统: 任意
标签: intune-defenderintuneregistry
参考: CIS Microsoft Intune for Microsoft Defender Antivirus Benchmark v1.0.0 - 2.14 Ensure 'ASR: Block executable content from email client and webmail' is set to 'Block'

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target intune-defender