It's a not dangerous memory resident encrypted parasitic virus. It hooks INT 21h and INT 8 (timer). It infects EXE-files only on their execution. Sometimes it beeps several times and types the message:
+--------------------------------------+
¦ DAVIS VIRUS V1.01¦
+--------------------------------------¦
¦ Author : Davis ¦
¦ Date : JUNE/23/1990 ¦
¦ ¦
¦ VIRUS STATION COPY RIGHT (C) ¦
+--------------------------------------+
""" Hi ! How are you today ? Don't worry about ! """
""" DAVIS VIRUS will follow you forever and ever ! """
""" Don't care me! I really do not damage your disk or data. """
""" Butall.......................make Funny to you sometime. """