I looked on vbulleting.org and can't find any mods for this. Seems the spammers are using links as theur full names, is there a way to block text such as "www" or "http://" from text fields like full name? Any input would be appreciated!
You don't need a mod for that Open Admincp > Vbulletin options > User registrations options. On this page find "Illegal User Names" and add the ones you'd like to deny as usernames.