Freshmac

色々方法を模索したのですが、上手くいきませんでした

模索した方法がなんなのかがわかりませんが模索した方法以外ならうまくいくんでしょう。

Downloaded free scan of malwarebytes. Was… - Apple Community

I found a copy of Freshmac. It's junk... reports that a perfectly clean macOS system needs "immediate attention" with a "high" number of (nonexistent) issues.

Malwarebytes will be detecting that before the end of the day.

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Fortunately, removal of Freshmac is pretty easy... just delete the app and restart the computer (or kill the Freshmac-helper process) and that's it. There will be some random data files left behind, but nothing concerning.

We've got a couple other rules we're working on before pushing up the signature update, but if you run a scan with Malwarebytes later it'll clean up those last remaining bits.

Mac の「アクティビティモニタ」でアプリケーションまたはプロセスを終了する - Apple サポート

そのアプリケーションの強制終了もできないのでしょうか。