This is a stealth boot sector virus. Unlike most other boot sector viruses, RP does not decrease the total amount of DOS memory; instead it decreases the amount of free memory.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
RP activates on the 17th of December. When the machine is booted on that date, the virus decrypts a message, switches the display to 40 column mode and displays the following text:
RP wants to say hello!
After this, the virus overwrites part of the hard drive, making the machine unbootable.
The virus is buggy and often crashes when infecting a floppy. RP was reported to be in the wild in Hungary and Denmark in January 1996.
Description Created: Mikko Hypponen, F-Secure