Virus Database

Lahyani family

Description Lahyani family

These are very dangerous memory resident parasitic viruses. They hook INT 21h, and write themselves to the end of COM files that are executed.
On the 11th of any month, the viruses display the message:
Abnormal program termination.
Please consult your vendor's manual page 68 pargraph 6,9
to find out the source of the problem.
C:>

Then the viruses open the C:COMMAND.COM file, search for the "Bad command or" text, then replace it with a new text:
[Lahyani is ALIVE]

On the 14th of any month, the viruses display the following message, and erase the hard drive sectors:
Although two days ago,
You my dear I warned;
Still you didn't listen
And thought it was nothing.
Now Lahyani, under the shining sun
Shall proceed and make you run.
- said the poet.

Check other viruses! Be aware! Use Antiviral Software

Natas.4744

Description Natas.4744

This is a dangerous memory resident multipartite polymorphic virus. It hooks INT 13h, 21h and writes itself into MBR of hard drive, boot sectors of floppy disks and at the end of COM and EXE files that are accessed. It does not infect the files that are opened by PKZIP/PKUNZIP, LHA and ARJ archivators. Depending on its internal counters the virus formats disk sectors. It contains the internal text strings:
BACK MODEM

Natas

Natas.4746

Description Natas.4746

This is a dangerous memory resident multipartite polymorphic virus. It hooks INT 13h, 21h and writes itself into MBR of hard drive, boot sectors of floppy disks and at the end of COM and EXE files that are accessed. It does not infect the files that are opened by PKZIP/PKUNZIP, LHA and ARJ archivators. Depending on its internal counters the virus formats disk sectors. It contains the internal text strings:
BACK MODEM

Natas

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