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     Amiga Virus Encyclopedia
     Byte Voyager II Virus
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     Name         : Byte Voyager II

     Aliases      : No Aliases

     Type         : Bootblock
     
     Size         : 1024 bytes

     Clones       : No Clones 

     Symptoms     : No Symptoms

     Discovered   : 8 april 1991

     Way to infect: Boot infection

     Rating       : Less Dangerous

     Kickstarts   : 1.2
                    1.3
                    2.0 (Just DD-Disks)

     Damage       : Overwrites boot

     Comments     : If you are booting  with a  ByteVoyager-Infected disk
                    the virus copies itself to address $7F000 and changes
                    the  KICK-Vectors  to  stay  resident  in memory. For 
                    infection the virus uses the DoIO()-Vector ehich will
                    be patched after the next reset.

                    The  ByteVoyagerVirus test for  block 880 (Root of DD
                    Disks) so it`s  very unlikely  that the virus infects
                    a  HD-Disk (BUT NOT UNTHINKABLE). The disk which will
                    be infected get an new name:

                    "Another virus by Byte Voyager"

                    After  the  1st  infection  the  virus installs a new 
                    patch in the ZERO-PAGE ($6C.w). This patch checks for
                    an  special  value  in memory.  If this value reaches
                    45000 your AMIGA will break down.

                    The  whole  virusbootblock  is  crypted  by using the
                    $dff006 register so you can`t read anything in the BB

     Removal      : Kickstart 1.2 & 1.3 : VT-Schutz v3.17
                    Kickstart all others: VirusZ III with Xvs.library installed
 
     Test made by : Safe Hex International 
     
     
     Ascii of Byte Voyager 2 virus (Decoded):