Virus.DOS.Crucifixion is a memory resident parasitic virus on DOS.
There are 3 variants:
When the virus is loaded into memory, it hooks INT 9 and 21h to infect any DOS executable file by writing itself to the end of these files that are opened by INT 21h function ExtendedOpen (AH=6Ch).
On pressing Alt-Ctrl-Del, depending on the system date it draws the picture, plays the tune and displays the messages:
If you're the Messiah and you know it, Clap your hands! Then your face will surely show it, (rucifixion Virus 1.0 (c) 1994, by Jesus of The Trinity