Webquestsearch/webquestsearchdaemon?

Both have free versions but if you find them useful it's always good to support them.

All processes, malicious or not, are ultimately launched from launchd and/or kernel_task. That just means that the malware is properly installed and running happily.

It sounds like you have a ton of malware installed. These days, it is pretty rare to see a "search" file like that. Most are random number or nonsense words. You may have a whole lot more malware installed.

Alas, I develop and sell an app that removes this kind of malware. The forum rules prevent me from giving you a link to it.

I can give you a link to etresoft's software and to another malware remover app: Etrecheck and Malwarebytes. Both are excellent apps to have and use when the occasion calls for it.