I-Worm.Win32.Mari is a mass-mailing worm written in Visual Basic language and has a size of 45,056 bytes.  

The worm sends mail to all addresses in the MS Outlook Address Book. The following is a sample of the mail it sends:..

I-Worm.Win32.Roron is a worm that can spread itself in a number of ways. These include sending itself out by email, copying itself to shared drives in networks, and placing copies of itself in folders that are likely to be shared via KaZaa pee..

T-Rex.1800 is a DOS memory-resident virus.

It infects ".COM" and ".EXE" files. However, this virus does not infect "COMMAND.COM" and files with the text string WIN and F-PROT in it.

T-Rex.1800 is a DOS memo..