Worried about Suspicious Exec file got installed

Ask your " from fellow musician friend to try upon " if this was a Microsoft Windows Executable file

If you were this Trusting of " fellow musician friend " they should have the answer, No ?

Normally, Microsoft Windows Executable files to nothing on macOS

Mac app security enhancements are sufficient to protect computers from malware.

Adware and malware can affect computers and are often downloaded from “shady” websites or developers untrusted " musician friend " who inject them into downloads.

Source: User tip from @Kurt Lang

What is malware? - Apple Community

If you purchased " Mixland 3348 " Plugin from https://mixland.io/products/3348tape

And it was from macOS 14 Sonoma and not for windows 7 and above

I would be concerned you may have downloaded the Microsoft Windows version

I arrive at this, you say it was an 'exec " which usually indicates this is a Microsoft Windows Executable file

You are welcome

Putting aside any personal innuendo and sticking to Apple Technical issues

https://etrecheck.com/en/index.html