Nameless.3000
Description Nameless.3000
It is a very dangerous memory resident encrypted parasitic virus. It traces INT 13h and INT 21h, hooks INT 21h, 2Fh, disinfects and executes the host program, and then stays memory resident. On DOS calls Close, Create, GetDiskSpace (INT 21h, AH=3Eh, 3Ch, 36h, 5Ah, 5Bh) the virus searches for .COM and .EXE files, then writes itself to the beginning of the file. If the file size is less than 8000 bytes, the virus increases the file size up to 8000 before infecting. While executing or opening an infected file the virus disinfects it.
Depending on its internal counters and the system time the virus corrupts the random selected disk sectors. The virus also runs a routine that erases the disk sectors and displays the counter of erased tracks (the counter runs backward).
The virus contains text strings in Russian and:
ABCDEFGHabcdefghCOMMAND
Nameless virus v.2.0
U my last hopeall Please...
*.COM *.EXE
Check other viruses! Be aware! Use Antiviral Software
Alex.818
Description Alex.818
This is a nonresident harmless virus. It infects EXE files in a standard way. The virus contains the text strings:
The Kite Virus (C) Alex Hacker *.EXE
The virus is not memory resident but copies small resident programs into the interrupt vector table. The first program erases text from screen by nice method some times after installation. The second program writes byte FEh to port 60h (?).
Alfa.3072
Description Alfa.3072
It is a dangerous(?) memory resident multipartite virus. While executing an infected file or loading from an infected floppy disk the virus infects the MBR of the hard drive. Then the virus hooks INT 13h, 21h and writes itself to the end of COM and EXE files that are executed. While accessing to floppy disks the virus infects the boot sector. Depending on its generation the virus may corrupt the CMOS.
|
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
|