When the virus is executed, it infects every COMMAND.COM in any directory, it does not infect other files.
The virus behaves stealthy so that that will have no observable size change on infected files.
The infected COMMAND.COM would fail to load on system start.
The exact memory usage is 1,536 bytes.
Redcode activates on January 1st. It forces the user to watch a game, at the expense of the user's productivity. After the "contest" ends, it hangs the system.
The virus contains the internal text strings:
The RedCode virus by Wintermute/29A; yeah, not a kickass at all, but with a funny payload, don't you agree ? Watch the payload !