%%File: VIRS0204.TXT
%%Name/Aliases: Butterfly,  Goddam Butterflies, Crusades
%%Platform: PC/MS-DOS
%%Type: Program., 
%%Disk Location: COM application.
%%Features: 
%%Damage: 
%%Size: 
%%See Also: Civil War
%%Notes: Discovered in two files on the CIX online system in the UK, 
DOCUMENT.COM and SPORTS.COM
The variant has the string "Hurray the crusades" in it.

This virus is not a fast infector, and spreads slowly. It adds 302 bytes 
to COM files.  There is no payload. The virus  does not go memory 
resident.  It avoids infecting  COMMAND.COM.

does not infect EXE files, a third variant does infect EXE files, but 
infected programs of 3rd variant never work