Int 21 Fn DD  - Virus - "jerusalem"-family - Relocate Virus???             [v]

   AH = DDh
   CX = number of bytes to copy
   DS:SI -> source of copy
   ES:DI -> destination of copy

Return: does not return normally; return address is caller's CS:0100h with
     AX = ???

See Also: AX=DDEFh,AH=E0h"VIRUS",AH=EEh"VIRUS"