If you have recently done the antivirus test with the live viri, even after you have deleted the downloaded rar and the folder which you have extracted to
you could still have live viri on your comp.
they are safely quarantined - BUT THEY ARE STILL THERE!
I recommend to delete all quarantined files from the test, empty your recycle bin, and do a full system scan - then you can't accidentally bring them back in the future
No need to panic - better to be safe than sorry