Virus Database

VLAD.Insert.292.a

Description VLAD.Insert.292.a

This is a memory-resident parasitic encrypted virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are accessed. It deletes the files ANTI-VIR.DAT, MSAV.CHK, CHKLIST.CPS, CHKLIST.MS. It contains the text strings:
[Insert v 2.0] [Darkman/29A]

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Lamego.722

Description Lamego.722

These are relatively harmless memory resident parasitic viruses. They hook INT 21h, and write themselves to the end of COM files that are executed. While installing into the system memory, the viruses also infect the C:COMMAND.COM file. In August, the viruses decrypt and display the following message:
(C) Virús LAMEGO 1.0
Cópia de virús ilegal all

The viruses also contain the text strings:
C:COMMAND.COM
*LAMEGO*

Lamento.2690

Description Lamento.2690

It is a very dangerous memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are accessed. While installing the virus also infects the C:COMMAND.COM and C:DOSMODE.COM files. The virus checks the file name, and does not infect the files that begin with any of the strings:
PCVIR CENTINEL SCAN CLEAN VSHIELD ATM TB CPAV MSAV TNT FINDVIR VC VREMOVE
VSMENU VSCHK MM. KEYB.

On January 21st the virus sets the system date to January, 20th, then deletes C:AUTOEXEC.BAT and C:CONFIG.SYS files, renames to the random names all the files in subdirectories of C: drive:
DOS MSDOS SYS DRDOS IBMDOS
WINDOWS WIN WIN3 WIN30 WIN31 WIN311

While processing Windows' directories the virus looks also for SYSTEM subdirectory. Then the virus displays the messages:
Lamento tener que comunicarle que hoy es 21 de Enero all
... ha sido una cortes¡a de Woi

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