This virus is not a well written one. In fact it is so badly written that in many cases it will simply cause the system to "hang", instead of properly infecting it. It is not a serious threat. The virus will only work on machines with at least 640K of memory, because it always tries to hide itself at the same address, starting at 9000:0000. The original infected program distributed by the author contained the string:
(c)Stupid 1989 Virushmock!
Disinfection & Removal
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.
This variant is also from Israel, possibly by the same author. It is 919 byte long. The most obvious effect of the virus is to display:
HEY SADAM LEAVE QUEIT BEFORE I COME
The "Profesor" variant is basically identical, with the text string changed.