VCOMM family
Description VCOMM family
These are nonmemory resident dangerous viruses. When an infected file is executed they search for the files in the current directory, and infect not more than one EXE file. While infecting a file they increase the file length to the block alignment (512 bytes), write themselves to the end of the file, and add one element to the relocation table in the EXE header. The viruses copy into video RAM (segment address BFFEh) a small memory-resident program that disables writing to the disk.
Check other viruses! Be aware! Use Antiviral Software
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
Lamerman
Description Lamerman
It is a very dangerous memory resident multipartite virus. It infects the MBR of the hard drive and overwrites EXE files that are created or copied, i.e. the virus does not affect existing EXE files but newly created/modified files only.
When an infected file is executed the virus affects the MBR and halts the computer, while infecting the virus fools the BIOS virus protection by a simple keyboard trick. On rebooting the virus stays memory resident, hooks INT 13h and overwrites EXE files on writing to them.
The virus contains the text string:
Lamerman .01
|
Home
Viruses from A to Z
0-9
A
B
Ñ
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
|