3nop
Description 3nop
It's a dangerous memory resident multipartite stealth virus. On loading from infected floppy it writes itself into MBR of hard drive. Then it hooks INT 13h (as loading from infected HD) and checks the functions of disk reading and writing. On reading from floppy, it infects the boot sector of the floppy, on writing on the floppy the virus checks first three bytes of data buffer. If there is JMP opcode (E9h), the virus overwrites 200h bytes of this buffer by virus' code. So the virus can insert itself into the executable file beginning or middle. On execution of this file the virus infects MBR of hard drive and returns to DOS. These files are not recoverable and should be deleted.
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Lobotomy Family
Description Lobotomy Family
These are a dangerous nonmemory resident parasitic viruses. They search for COM files, then write themselves to the end of the file. The viruses delete the ADINF anti-virus databases. Depending on the system time the viruses display the messages:
Lobotomy.824:
*** LOBOTOMY_ v1.1beta (c)1995 MSfVC ***
Lobotomy.966:
LOBOTOMY
RESET your machine and soon, you`ll know,
that I`m the Natural_Born_Killer all
v1.1 (c)95_MSfVC Bye ...
"Lobotomy.824" also displays a text in Russian. "Lobotomy.966" erases the CMOS and halts the computer.
LockCD.2045
Description LockCD.2045
It is not a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of EXE files that are executed. While installing the virus changes the settings of SMARTDRV disk driver. Depending on the system timer the virus calls some CD-ROM functions (locks CD?) and displays the message:
+--------------------------+
| XXXXX |
| XxXxX |
| XxX |
| xxxxxxxxxxxxxxxxxx |
| +-X----------------X-+ |
| | X LockCD '96 X | |
| +-Xx--------------xX-+ |
| xxXXxx |
| xxxXXxxx |
| X XX X |
| X X |
| X X |
| X X |
| X X |
| X X |
| xXx xXx |
+--------------------------+
|(v) dedykowany politykom, |
| biskupom i biznesmenom|
+--------------------------+
|