It is difficult to recognize the presence of Supova on the system at first sight, especially if it has been voluntarily downloaded through KaZaA.
KaZaA is an application that allows users to share files over the Internet. Consequently, users might be enticed to download the worm, as it usually masquerades as a game or an interesting application.
In the case of MSN Messenger, Supova sends copies of itself with variable names to all the contacts in the application. The files are accompanied by the following texts:
Hehe, check this out :-)
Funny, check it out (h)
LOL!! See this :D
LOL!! Check this out :)
Once it has been run, Supova displays the following error message on the screen:
Furthermore, Supova could also display a dialog box with the title Just checkin' the walls..., and the text Patch the leaks or the ship will sink.