Datalock.920
Description Datalock.920
This is a memory-resident dangerous virus that infects COM- and EXE-files as they are started. Since August 1990 it blocks opening of .DBF-files. The virus contains the text "DataLock version 1.00" and hooks INT 21h.
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Halka Family
Description Halka Family
These are not dangerous (except "Halka.474") nonmemory resident parasitic viruses. "Halka.474,720" are encrypted ones. They search for the files and write themselves to the end of the file. "Halka.474" infects EXE files, other viruses infect .COM files.
"Halka.474" erases the disk sectors.
On December, 31th the viruses display the messages:
"Halka.720":
Este es el virus 786 Version 2.01
Encriptado variable
Echo por --> _¡X__ [_x_]/A.H.D. HALKA/. Industria Argentina
Quemen al muñeco del `94!
"Halka.1000":
Este es el virus 786 Version 1
Echo por --> _¡x__ [_x_]/A.H.D. HALKA/. Industria Argentina
Quemen al muñeco del `94!
OHH NO, ME HA DESCUBIERTO!!!
Some viruses contain the additional text strings:
"Halka.474":
Red October (C) >D.V< 1994
Catch if you can
"Halka.720":
MALDITO, ME HA DESENCRIPTADO!! :{{
Aqui no estoy! <|-)
Hallo.524
Description Hallo.524
It is not a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM-files that are executed. After infection of each file the virus displays the message:
Hallo my dear friend !!!
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