File damaged and can't be opened Catalina

Hello,

Since updating to Catalina; a popup window stating "ydonrmvmtzre" is damaged and can't be opened appears. Clicking on 'Show in Finder' results in the popup window reappearing, clicking on 'ok' gets the same result. The pop-up os always in the foreground so there is no chance of dismissing it.

I have searched for the file on my computer and to the best of my knowledge it does not exist. Is there a method of overriding the pop-up so my mac might ignore the damaged file?

Thank you for your help.