Dela via


Felsöka åtgärder för sårbarhetsskydd

Gäller för:

Vill du uppleva Microsoft Defender för Endpoint? Registrera dig för en kostnadsfri utvärderingsversion.

När du skapar en uppsättning sårbarhetsskyddsreduceringar (kallas en konfiguration) kan det hända att konfigurationsexporten och importprocessen inte tar bort alla oönskade åtgärder.

Du kan ta bort oönskade åtgärder manuellt i Windows-säkerhet, eller så kan du använda följande process för att ta bort alla åtgärder och sedan importera en baslinjekonfigurationsfil i stället.

  1. Ta bort alla processreduceringar med det här PowerShell-skriptet:

    # Check if Admin-Privileges are available
    function Test-IsAdmin {
        ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")
    }
    
    # Delete ExploitGuard ProcessMitigations for a given key in the registry. If no other settings exist under the specified key,
    # the key is deleted as well
    function Remove-ProcessMitigations([Object] $Key, [string] $Name) {
        Try {
            if ($Key.GetValue("MitigationOptions")) {
                Write-Host "Removing MitigationOptions for:      " $Name
                Remove-ItemProperty -Path $Key.PSPath -Name "MitigationOptions" -ErrorAction Stop;
            }
            if ($Key.GetValue("MitigationAuditOptions")) {
                Write-Host "Removing MitigationAuditOptions for: " $Name
                Remove-ItemProperty -Path $Key.PSPath -Name "MitigationAuditOptions" -ErrorAction Stop;
            }
            if ($Key.GetValue("EAFModules")) {
                Write-Host "Removing EAFModules for: " $Name
                Remove-ItemProperty -Path $Key.PSPath -Name "EAFModules" -ErrorAction Stop;
            }
    
            # Remove the FilterFullPath value if there is nothing else
            if (($Key.SubKeyCount -eq 0) -and ($Key.ValueCount -eq 1) -and ($Key.GetValue("FilterFullPath"))) {
                Remove-ItemProperty -Path $Key.PSPath -Name "FilterFullPath" -ErrorAction Stop;
            }
    
            # If the key is empty now, delete it
            if (($Key.SubKeyCount -eq 0) -and ($Key.ValueCount -eq 0)) {
                Write-Host "Removing empty Entry:                " $Name
                Remove-Item -Path $Key.PSPath -ErrorAction Stop
            }
        }
        Catch {
            Write-Host "ERROR:" $_.Exception.Message "- at ($MitigationItemName)"
        }
    }
    
    # Delete all ExploitGuard ProcessMitigations
    function Remove-All-ProcessMitigations {
        if (!(Test-IsAdmin)) {
            throw "ERROR: No Administrator-Privileges detected!"; return
        }
    
        Get-ChildItem -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options" | ForEach-Object {
            $MitigationItem = $_;
            $MitigationItemName = $MitigationItem.PSChildName
    
            Try {
                Remove-ProcessMitigations $MitigationItem $MitigationItemName
    
                # "UseFilter" indicate full path filters may be present
                if ($MitigationItem.GetValue("UseFilter")) {
                    Get-ChildItem -Path $MitigationItem.PSPath | ForEach-Object {
                        $FullPathItem = $_
                        if ($FullPathItem.GetValue("FilterFullPath")) {
                            $Name = $MitigationItemName + "-" + $FullPathItem.GetValue("FilterFullPath")
                            Write-Host "Removing FullPathEntry:              " $Name
                            Remove-ProcessMitigations $FullPathItem $Name
                        }
    
                        # If there are no subkeys now, we can delete the "UseFilter" value
                        if ($MitigationItem.SubKeyCount -eq 0) {
                            Remove-ItemProperty -Path $MitigationItem.PSPath -Name "UseFilter" -ErrorAction Stop
                        }
                    }
                }
                if (($MitigationItem.SubKeyCount -eq 0) -and ($MitigationItem.ValueCount -eq 0)) {
                    Write-Host "Removing empty Entry:                " $MitigationItemName
                    Remove-Item -Path $MitigationItem.PSPath -ErrorAction Stop
                }
            }
            Catch {
                Write-Host "ERROR:" $_.Exception.Message "- at ($MitigationItemName)"
            }
        }
    }
    
    # Delete all ExploitGuard System-wide Mitigations
    function Remove-All-SystemMitigations {
    
        if (!(Test-IsAdmin)) {
            throw "ERROR: No Administrator-Privileges detected!"; return
        }
    
        $Kernel = Get-Item -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\kernel"
    
        Try {
            if ($Kernel.GetValue("MitigationOptions"))
                { Write-Host "Removing System MitigationOptions"
                    Remove-ItemProperty -Path $Kernel.PSPath -Name "MitigationOptions" -ErrorAction Stop;
                }
            if ($Kernel.GetValue("MitigationAuditOptions"))
                { Write-Host "Removing System MitigationAuditOptions"
                    Remove-ItemProperty -Path $Kernel.PSPath -Name "MitigationAuditOptions" -ErrorAction Stop;
                }
        } Catch {
            Write-Host "ERROR:" $_.Exception.Message "- System"
        }
    }
    
    Remove-All-ProcessMitigations
    Remove-All-SystemMitigations
    
  2. Skapa och importera en XML-konfigurationsfil med följande standardåtgärder, enligt beskrivningen i Importera, exportera och distribuera Exploit Protection-konfigurationer:

     <?xml version="1.0" encoding="UTF-8"?>
     <root>
        <SystemConfig/>
        <AppConfig Executable="ExtExport.exe">
           <ASLR OverrideForceRelocateImages="false" ForceRelocateImages="false" Enable="true"/>
        </AppConfig>
        <AppConfig Executable="ie4uinit.exe">
          <ASLR OverrideForceRelocateImages="false" ForceRelocateImages="false" Enable="true"/>
        </AppConfig>
        <AppConfig Executable="ieinstal.exe">
       <ASLR OverrideForceRelocateImages="false" ForceRelocateImages="false" Enable="true"/>
        </AppConfig>
        <AppConfig Executable="ielowutil.exe">
          <ASLR OverrideForceRelocateImages="false" ForceRelocateImages="false" Enable="true"/>
        </AppConfig>
       <AppConfig Executable="ieUnatt.exe">
          <ASLR OverrideForceRelocateImages="false" ForceRelocateImages="false" Enable="true"/>
        </AppConfig>
       <AppConfig Executable="iexplore.exe">
          <ASLR OverrideForceRelocateImages="false" ForceRelocateImages="false" Enable="true"/>
        </AppConfig>
       <AppConfig Executable="mscorsvw.exe">
           <ExtensionPoints OverrideExtensionPoint="false" DisableExtensionPoints="true"/>
        </AppConfig>
        <AppConfig Executable="msfeedssync.exe">
           <ASLR OverrideForceRelocateImages="false" ForceRelocateImages="false" Enable="true"/>
        </AppConfig>
        <AppConfig Executable="mshta.exe">
           <ASLR OverrideForceRelocateImages="false" ForceRelocateImages="false" Enable="true"/>
        </AppConfig>
        <AppConfig Executable="ngen.exe">
           <ExtensionPoints OverrideExtensionPoint="false" DisableExtensionPoints="true"/>
        </AppConfig>
        <AppConfig Executable="ngentask.exe">
           <ExtensionPoints OverrideExtensionPoint="false" DisableExtensionPoints="true"/>
        </AppConfig>
        <AppConfig Executable="PresentationHost.exe">
           <DEP Enable="true" OverrideDEP="false" EmulateAtlThunks="false"/>
           <ASLR OverrideForceRelocateImages="false" ForceRelocateImages="false" Enable="true" OverrideBottomUp="false" HighEntropy="true" BottomUp="true"/>
           <SEHOP Enable="true" OverrideSEHOP="false" TelemetryOnly="false"/>
           <Heap OverrideHeap="false" TerminateOnError="true"/>
        </AppConfig>
        <AppConfig Executable="PrintDialog.exe">
           <ExtensionPoints OverrideExtensionPoint="false" DisableExtensionPoints="true"/>
        </AppConfig>
        <AppConfig Executable="PrintIsolationHost.exe"/>
        <AppConfig Executable="runtimebroker.exe">
           <ExtensionPoints OverrideExtensionPoint="false" DisableExtensionPoints="true"/>
        </AppConfig>
            <AppConfig Executable="splwow64.exe"/>
        <AppConfig Executable="spoolsv.exe"/>
        <AppConfig Executable="svchost.exe"/>
        <AppConfig Executable="SystemSettings.exe">
           <ExtensionPoints OverrideExtensionPoint="false" DisableExtensionPoints="true"/>
        </AppConfig>
    </root>
    

Om du inte redan har gjort det är det en bra idé att ladda ned och använda Windows-säkerhet-baslinjer för att slutföra anpassningen av sårbarhetsskydd.

Tips

Vill du veta mer? Engage med Microsofts säkerhetscommunity i vår Tech Community: Microsoft Defender för Endpoint Tech Community.