Foreign Plugin “Insult Stephen Pro” suddenly installed

Hi community,

after a recent automatic WordPress Update there seems to be a new Plugin, which I cannot identify nor uninstall.

I have the following info:

WordPress Plugin Insult Stephen Pro v.4.4.6 to blur

Version 4.4.6 | Von Graysonybed | Plugin-Seite aufrufen

When I try to uninstall, it causes a critical error on the website, which WordPress automatically prevents and sends an email about the issue to my inbox.

Does anybody know what the plugin is for? Is it malware or something like that, can that happen at all?

Thanks!