Viral Rewind: Virus.DOS.Sov (1193/1205)

Sov is a pretty simple DOS virus that when loaded resides in memory hooking interrupt 21h to infect .COM programs as they're accessed increasing their file size.
The Payload: Both variants behave the same where they activate on the 22nd of April of any year when an infected .COM program is executed. They'll display a fullscreen graphic that will stay on the screen until the user presses any key after which the original intended program runs.
Sov.1193: Displays vertical black/white lines/bars on the display.
Sov.1205: Displays a graphic reading "I AM VIRUS" on the display.
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