Virus Database

Topa.2456

Description Topa.2456

This is a dangerous memory-resident parasitic encrypted virus. It hooks INT 1Ch, 21h and writes itself to the end of COM and EXE files that are executed or opened. It deletes CHKLIST.MS file. While infecting a file it checks the file name and does not infect the files from the list:
COMMAND
SCAN
CLEAN
VSHIELD
4DOS
NDOS
F-PROT
VIRSTOP
F-TEST
TBAV
TBSCAN
TBSETUP
TBGENSIG
TBCLEAN
TBUTIL
VPCSCAN
VIREX
MSAV
The virus writes to BAT, DOC, TXT and some other files with "text" extensions the string:
REM Chi non lecca la Figa il Signore lo castiga.
The virus also contains the text strings:
dummy fcb
TOPA 1.20 by Steve Cracker

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Animals.2400.a

Description Animals.2400.a

These are benign memory resident polymorphic parasitic viruses. They do not install themselves memory resident if TBAV anti-virus TSR drivers are installed. The viruses hook INT 8 and 21h, and write themselves to the end of COM and EXE files that are executed. The viruses do not infect files if the file name contains the letters AV or AN (AVP, NAV, SCAN). They also do not infect anti-virus programs GUARD and F-PROT as well as KRNL?86 and several other utilities.
Depending on its random counter and system timer, the viruses cause the screen to blink. On the 25th of any month, except June, the viruses display the following message:
Toto je ostrá verze viru ANIMALS_97
Zastavte t rání zví at, sic se Vám to jednou v echno vrátí !!!
Zlej Králík
Zdravím: Mloka, Filtráka, POPa a v echny p+kn holky.

The viruses also contain the text strings:
TBMEMXXXTBCHKXXXTBDSKXXXTBFILXXX
-Díky V vojár

Animo.518

Description Animo.518

It is a harmless nonmemory resident parasitic virus. It searches for COM files, then writes itself to the end of the file. The virus does not manifest itself in any way. It contains the text strings:
*.ZOM
[Animo]
[Rajaat/29A]

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