/WannacryHFCheck.ps1 Secret
Created
September 12, 2017 15:31
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Powershell script for wannacry Hotfix check
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[reflection.assembly]::LoadWithPartialName("System.Version") | |
$os = Get-WmiObject -class Win32_OperatingSystem | |
$osName = $os.Caption | |
$s = "%systemroot%\system32\drivers\srv.sys" | |
$v = [System.Environment]::ExpandEnvironmentVariables($s) | |
If (Test-Path "$v") | |
{ | |
Try | |
{ | |
$versionInfo = (Get-Item $v).VersionInfo | |
$versionString = "$($versionInfo.FileMajorPart).$($versionInfo.FileMinorPart).$($versionInfo.FileBuildPart).$($versionInfo.FilePrivatePart)" | |
$fileVersion = New-Object System.Version($versionString) | |
} | |
Catch | |
{ | |
Write-Host "Unable to retrieve file version info, please verify vulnerability state manually." -ForegroundColor Yellow | |
Return | |
} | |
} | |
Else | |
{ | |
Write-Host "Srv.sys does not exist, please verify vulnerability state manually." -ForegroundColor Yellow | |
Return | |
} | |
if ($osName.Contains("Vista") -or ($osName.Contains("2008") -and -not $osName.Contains("R2"))) | |
{ | |
if ($versionString.Split('.')[3][0] -eq "1") | |
{ | |
$currentOS = "$osName GDR" | |
$expectedVersion = New-Object System.Version("6.0.6002.19743") | |
} | |
elseif ($versionString.Split('.')[3][0] -eq "2") | |
{ | |
$currentOS = "$osName LDR" | |
$expectedVersion = New-Object System.Version("6.0.6002.24067") | |
} | |
else | |
{ | |
$currentOS = "$osName" | |
$expectedVersion = New-Object System.Version("9.9.9999.99999") | |
} | |
} | |
elseif ($osName.Contains("Windows 7") -or ($osName.Contains("2008 R2"))) | |
{ | |
$currentOS = "$osName LDR" | |
$expectedVersion = New-Object System.Version("6.1.7601.23689") | |
} | |
elseif ($osName.Contains("Windows 8.1") -or $osName.Contains("2012 R2")) | |
{ | |
$currentOS = "$osName LDR" | |
$expectedVersion = New-Object System.Version("6.3.9600.18604") | |
} | |
elseif ($osName.Contains("Windows 8") -or $osName.Contains("2012")) | |
{ | |
$currentOS = "$osName LDR" | |
$expectedVersion = New-Object System.Version("6.2.9200.22099") | |
} | |
elseif ($osName.Contains("Windows 10")) | |
{ | |
if ($os.BuildNumber -eq "10240") | |
{ | |
$currentOS = "$osName TH1" | |
$expectedVersion = New-Object System.Version("10.0.10240.17319") | |
} | |
elseif ($os.BuildNumber -eq "10586") | |
{ | |
$currentOS = "$osName TH2" | |
$expectedVersion = New-Object System.Version("10.0.10586.839") | |
} | |
elseif ($os.BuildNumber -eq "14393") | |
{ | |
$currentOS = "$($osName) RS1" | |
$expectedVersion = New-Object System.Version("10.0.14393.953") | |
} | |
elseif ($os.BuildNumber -eq "15063") | |
{ | |
$currentOS = "$osName RS2" | |
"No need to Patch. RS2 is released as patched. " | |
return | |
} | |
} | |
elseif ($osName.Contains("2016")) | |
{ | |
$currentOS = "$osName" | |
$expectedVersion = New-Object System.Version("10.0.14393.953") | |
} | |
elseif ($osName.Contains("Windows XP")) | |
{ | |
$currentOS = "$osName" | |
$expectedVersion = New-Object System.Version("5.1.2600.7208") | |
} | |
elseif ($osName.Contains("Server 2003")) | |
{ | |
$currentOS = "$osName" | |
$expectedVersion = New-Object System.Version("5.2.3790.6021") | |
} | |
else | |
{ | |
Write-Host "Unable to determine OS applicability, please verify vulnerability state manually." -ForegroundColor Yellow | |
$currentOS = "$osName" | |
$expectedVersion = New-Object System.Version("9.9.9999.99999") | |
} | |
Write-Host "`n`nCurrent OS: $currentOS (Build Number $($os.BuildNumber))" -ForegroundColor Cyan | |
Write-Host "`nExpected Version of srv.sys: $($expectedVersion.ToString())" -ForegroundColor Cyan | |
Write-Host "`nActual Version of srv.sys: $($fileVersion.ToString())" -ForegroundColor Cyan | |
If ($($fileVersion.CompareTo($expectedVersion)) -lt 0) | |
{ | |
Write-Host "`n`n" | |
Write-Host "System is NOT Patched" -ForegroundColor Red | |
} | |
Else | |
{ | |
Write-Host "`n`n" | |
Write-Host "System is Patched" -ForegroundColor Green | |
} | |
# |
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My Windows 10 box has
srv2.sys
instead ofsrv.sys
. Adding file checking would be useful.