Get-EternalBlueVulnerabilityStatistics.ps1
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<#PSScriptInfo
.Version 1.1 .Guid 038a1c05-b1da-48c9-893d-4084b99f831b .Author Thomas J. Malkewitz @dotps1 .Tags WannaCry, WannaCrypt, EternalBlue, SMB1, Malware .ProjectUri https://github.com/dotps1/PSFunctions .ExternalModuleDependencies NetTCPIP .ReleaseNotes Missed the -ErrorAction Stop in the Test-WSMan call, this is needed to fall back to DCOM. #> <# .Synopsis Gets EternalBlue vulnerability information. .Description Test for applicable patches to prevent the WannaCry/WannaCrypt malware. Tests for the SMB1 protocol and component. .Inputs System.String Microsoft.Management.Infrastructure.CimSession .Outputs System.Management.Automation.PSCustomObject .Parameter ComputerName System.String ComputerName to gather information from. .Parameter Credential System.Management.Automation.PSCredential Credential used to establish a connection. .Parameter CimSession Microsoft.Management.Infrastructure.CimSession Pre established CimSession used to connect. .Example PS C:\> Get-EternalBlueVulnerabilityStatistics PSComputerName : my-win7-rig OperatingSystemCaption : Microsoft Windows 7 Professional OperatingSystemVersion : 6.1.7601 LastBootUpTime : 5/14/2017 3:38:38 PM AppliedHotFixID : KB4012212;KB4015546;KB4015549 SMB1FeatureEnabled : False SMB1ProtocolEnabled : False Port139Enabled : True Port445Enabled : True .Example PS C:\> Get-ADComputer -Identity domain-win7-rig | Get-EternalBlueVulnerabilityStatistics PSComputerName : domain-win7-rig OperatingSystemCaption : Microsoft Windows 7 Professional OperatingSystemVersion : 6.1.7601 LastBootUpTime : 3/14/2017 3:38:38 PM AppliedHotFixID : SMB1FeatureEnabled : False SMB1ProtocolEnabled : True Port139Enabled : True Port445Enabled : True .Notes WannaCry/WannaCrypt (EternalBlue) vulnerability is only applicable to Microsoft Windows 10 1607 and prior, 1702 was not affected. .Link https://technet.microsoft.com/en-us/library/security/ms17-010.aspx .Link https://support.microsoft.com/en-us/help/2696547/how-to-enable-and-disable-smbv1,-smbv2,-and-smbv3-in-windows-vista,-windows-server-2008,-windows-7,-windows-server-2008-r2,-windows-8,-and-windows-server-2012 .Link https://dotps1.github.io .Link https://www.powershellgallery.com/packages/Get-EternalBlueVulnerabiltyInforamtion .Link https://grposh.github.io #> #requires -Module NetTCPIP [CmdletBinding( DefaultParameterSetName = "ByComputerName" )] [OutputType( [PSCustomObject] )] param ( [Parameter( ParameterSetName = "ByComputerName", ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true )] [ValidateScript({ if (Test-Connection -ComputerName $_ -Count 1 -Quiet) { return $true } else { throw "Failed to contact '$_'." } })] [Alias( "ComputerName" )] [String[]] $Name = $env:COMPUTERNAME, [Parameter( ParameterSetName = "ByComputerName" )] [System.Management.Automation.PSCredential] $Credential = [PSCredential]::Empty, [Parameter( ParameterSetName = "ByCimSession", ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true )] [Microsoft.Management.Infrastructure.CimSession[]] $CimSession ) begin { $hotFixIDs = @( "KB3205409", "KB3210720", "KB3210721", "KB3212646", "KB3213986", "KB4012212", "KB4012213", "KB4012214", "KB4012215", "KB4012216", "KB4012217", "KB4012218", "KB4012220", "KB4012598", "KB4012606", "KB4013198", "KB4013389", "KB4013429", "KB4015217", "KB4015438", "KB4015546", "KB4015547", "KB4015548", "KB4015549", "KB4015550", "KB4015551", "KB4016635", "KB4019215", "KB4019216", "KB4019472" ) function Get-Data ([Microsoft.Management.Infrastructure.CimSession]$CimSession, [Array]$HotfixIDs) { # Operating System Data Write-Progress -Activity "Gathering EternalBlue vulnerability information from '$nameValue'" -CurrentOperation "Retrieve operating system information" -PercentComplete 20 $osInformation = Get-CimInstance -CimSession $CimSession -ClassName Win32_OperatingSystem -Property Caption, LastBootUpTime, Version # Hotfix Data Write-Progress -Activity "Gathering EternalBlue vulnerability information from '$nameValue'" -CurrentOperation "Retrieve operating hotfix id" -PercentComplete 40 $appliedHotFixID = (Get-CimInstance -CimSession $CimSession -ClassName Win32_QuickFixEngineering).Where({ $_.HotFixID -in $HotfixIDs }).HotFixID # SMB1Feature Data Write-Progress -Activity "Gathering EternalBlue vulnerability information from '$nameValue'" -CurrentOperation "Retrieve SMB1 feature state" -PercentComplete 60 $smb1Feature = (Get-CimInstance -CimSession $CimSession -ClassName Win32_OptionalFeature -Property InstallState -Filter "Name = 'SMB1Protocol'").InstallState if ($smb1Feature -eq 1) { $smb1FeatureEnabled = $true } else { $smb1FeatureEnabled = $false } # SMB1Protocol Data Write-Progress -Activity "Gathering EternalBlue vulnerability information from '$nameValue'" -CurrentOperation "Retrieve SMB1 protocol state" -PercentComplete 80 $smb1Protocol = (Invoke-CimMethod -CimSession $CimSession -ClassName StdRegProv -MethodName GetDwordValue -Arguments @{ hDefKey = [uint32]2147483650; sSubKeyName = "SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters"; sValueName = "SMB1" }).uValue if ($smb1Protocol -eq 0) { $smb1ProtocolEnabled = $false } else { $smb1ProtocolEnabled = $true } # SMB1Port Data Write-Progress -Activity "Gathering EternalBlue vulnerability information from '$nameValue'" -CurrentOperation "Retrieve SMB port state" -PercentComplete 100 $port139TestConnection = (Test-NetConnection -ComputerName $CimSession.ComputerName -Port 139).TcpTestSucceeded $port445TestConnection = (Test-NetConnection -ComputerName $CimSession.ComputerName -Port 445).TcpTestSucceeded return [PSCustomObject]@{ PSComputerName = $CimSession.ComputerName OperatingSystemCaption = $osInformation.Caption OperatingSystemVersion = $osInformation.Version LastBootUpTime = $osInformation.LastBootUpTime AppliedHotFixID = $appliedHotFixID -join ";" SMB1FeatureEnabled = $smb1FeatureEnabled SMB1ProtocolEnabled = $smb1ProtocolEnabled Port139Enabled = $port139TestConnection Port445Enabled = $port445TestConnection } } } process { switch ($PSCmdlet.ParameterSetName) { "ByComputerName" { foreach ($nameValue in $Name) { try { $protocol = "WSMAN" $protocolTest = Test-WSMan -ComputerName $name -ErrorAction Stop if ($null -eq $protocolTest -or $protocol.ProductVersion -contains "Stack: 2.0") { $protocol = "DCOM" } } catch { $protocol = "DCOM" } try { $sessionParameters = @{ ComputerName = $nameValue SessionOption = (New-CimSessionOption -Protocol $protocol) ErrorAction = "Stop" } $credentialBoundParameter = $PSBoundParameters.ContainsKey( "Credential" ) if ($credentialBoundParameter) { $sessionParameters.Add( "Credential", $Credential ) } $session = New-CimSession @sessionParameters } catch { Write-Error -Message $_.ToString() continue } $output = Get-Data -CimSession $session -HotfixIDs $hotFixIDs Write-Output -InputObject $output Remove-CimSession -CimSession $session } } "ByCimSession" { foreach ($cimSessionValue in $CimSession) { $output = Get-Data -CimSession $cimSessionValue -HotfixIDs $hotFixIDs Write-Output -InputObject $output } } } } |