Probably a trojan as those can only be deleted, not cleaned...a slight bending of the language there I suppose which can lead to confusion.
I would check in SecurityCenter > Navigation > Quarantined and Trusted Items to see if anything is listed there that can be deleted.
See the last link in my signature below and run a couple of extra tools as a precaution.
Try Malwarebytes Free and maybe AdwCleaner. To keep Malwarebytes actuslly free of charge do NOT accept the free trial.
You can keep it on your machine as a standby but remember always to update it before future use.