spyware

Don't know how to remove the malware from terminal.

Have you tried Malwarebytes for Mac?

 1. Run  the latest release of Malwarebytes for Mac to remove malware/adware installed on your Mac.

     Install guide:       https://support.malwarebytes.com/docs/DOC-1817

     Uninstall Guide:  https://support.malwarebytes.com/docs/DOC-1190

     The installer may ask you to allow it in Security & Privacy  /System Preference. Allow it.

     Click the “Scan Now” button.

     Repeat the scan couple of times.

     Once done quit Malwarebytes for Mac.

     Restart the computer , relaunch Safari holding the shift key down.

 2. Remove unknown and third party installed extensions if installed. 

     https://support.apple.com/guide/safari/use-safari-extensions-sfri32508/mac

Safari:

1. Start Safari on your Mac, click Safari to open drop-down menu and choose Preferences
2. Click Extensions tab.
3. Find MacAppExtensions extension.
4. Click Uninstall button to remove it.

Reset Safari:

1. Start Safari on your Mac, click Safari to open drop-down menu and choose Preferences
2. Go to the Privacy section of Safari’s preferences.
3. Click Remove All Website Data button.
4. In opened window click Remove Now button to remove data stored by websites in Safari.
5. Go to the Advanced section of Safari’s preferences.
6. Click the Show Develop menu in menu bar option.
7. In the menu click Develop and select Empty Caches from this menu.
8. Again, go to Safari menu and choose Clear History….
9. Choose to clear all history and click Clear History button.

You are welcome. In the Privacy preference, click Manage Website Data, then Remove all.