I-Worm.Win32.Lirva.A spreads itself via email.

Subject :

- Fw: Prohibited customers...
- Re: Brigade Ocho Free membership
- Re: According to Daos Summit
- Fw: Avril Lavigne - the best
- Re: Reply on accou..

Swiss_Boot is a boot virus that infects floppy boot sector and hard disk boot sector.

It decreases 3K Bytes of memory and resides in the memory.
This virus hid itself.

Swiss_Boot is a boot virus that infects floppy b..

VBS.Merlin is a script virus that spreads itself via emails, mIRC, and mapped network drives.

Upon execution, it creates 500 folders with read-only and hidden attributes.
It deletes all '.doc' files and infects '.vbs' and '.vbe' ..

W97M.Bentbasha.A is a macro virus that triggers the opening or closing of infected or new document.
It will disable the macro protection function.

It opens Notepad and displays the following message on the 7th of every month.