Virus.DOS.Beethoven

Technical Details

It’s a dangerous memory resident parasitic encrypted virus. It hooks INT
1Ch, 21h and writes itself at the end of COM- and EXE-files that are executed or
opened. Depending on the internal counter and system timer this virus
overwrites the MBR of hard drive and files by trojan program which on execution
displays the message and plays the music:

Beethoven is here…. And now, enjoy the music…