Fear.1823
Description Fear.1823
It's a memory resident encrypted parasitic virus. It hooks INT 21h (for infection) and INT 2Fh (for "Are you here?" call). It writes itself to the end of .COM-files on their execution. The files can be encrypted wrong, they hang up the computer and are not recovered. Sometimes it formats the HD sectors and displays:
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MPS.469
Description MPS.469
These are harmless nonmemory resident parasitic viruses. They search for .COM files of the current directory and write themselves to the end, and Jmp-Virus code (INC AX, JMP Loc_Vir) to the beginning of the file. They do not manifest themselves it any way. The viruses contain the texts:
*.COM
(C) MPS-OPS 1991
MPS.682
It is a memory resident parasitic virus. It hooks INT 21h and writes itself to the end of .EXE files that are executed. It contains the encrypted string:
Przepraszam wszystkich, ktorzy ucierpieli z powodu niedoskonalosci moich
wirusow oraz p.Sella za ich prymitywna budowe. Niestety, dopiero zaczynam
wkraczac w swiat jezyka maszynowego. Marek Pande (C) MPS-OPC v4.01
MPS.754
It is a harmless memory resident parasitic virus. It hooks INT 21h and writes itself to the end of .COM and .EXE files that are executed. It contains the text:
(C) MPS-OPC v4.12
MPTI.1536.a
Description MPTI.1536.a
It is a dangerous memory resident parasitic partly encrypted virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are executed. Depending on the system date it corrupts the boot sectors and erases CMOS. It contains the text string:
AIDSTESTVL(C) S.A.- MPTI,1992.
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