Big Ben Virus:

        The virus was sent me as Big Ben virus, I cannot follow the name of
        this virus, it appears only a clocktime sometimes on the screen.

        Kickstart 2.x and higher is required to run this virus.

        Patched vectors: Exec() CoolDoIO, Exec() Findname, Exec() Replymsg,
                         Exec() Waitport, Exec() DoIO

        The virus tries to read the time from a hardware chip, which is not
        located at this adress on newer machines. The virus allocates it`s
        memory correct and tests, if the catched DoIO call comes from the
        "trackdisk.device" or not. So only diskdrives will be infected and
        NOT harddrives.

        The way of patching the vectors is new on AMIGA. The way of patching
        will be used on Intel Windows machines in conjunction with background
        programms (Thanks Ingo for this hint). This routine is buggy, but

                               Detection and memory repair tested 01.12.1994.

        Test by Markus Schmall

[Go back]