Check if the script adds a Registry Key ( HKCU\Software\Microsoft\Windows\CurrentVersion\Run ) or a Scheduled Task.
The script may use ASCII decimal codes.
: Functions like Replace() , Reverse() , or Split() used to hide keywords like Invoke-Expression (IEX) or DownloadString . Download new top code txt
Example : [char]104 + [char]116 + [char]116 + [char]112 translates to http . Check if the script adds a Registry Key
Action : Replace the IEX (Invoke-Expression) at the start of the script with Write-Output or echo to print the decoded string to the terminal instead of executing it. Download new top code txt
Action : Use a tool like CyberChef with the "From Base64" and "Remove Null bytes" recipes.