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Date:      Wed, 28 Mar 2001 14:51:00 +0200
From:      =?iso-8859-1?Q?Bryan_=D8sterg=E5rd?= <bostergaard@siticom.com>
To:        'Terry Lambert' <tlambert@primenet.com>
Cc:        chat@FreeBSD.ORG, rsidd@physics.iisc.ernet.in
Subject:   RE: Virus targetting both Windows and Linux?
Message-ID:  <C3CC10B4E6D5D411B21D00508BEA25D40142FF@EXCHANGE-TMP>

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>> Is this at all possible?
>> http://dailynews.yahoo.com/h/nm/20010327/wr/virus_winux_dc_1.html
>
>Maybe if you had WABI or WINE installed.
>
>It would be hard for a virus to be executable on more than one
>platform at a time, unless it wasn't really a virus.

The way this virus works, is as follows:

It has one Linux ELF image capable of infecting both Linux ELF and Windows
PE files.
It has one Windows PE image capable of infecting both Linux ELF and Windows
PE files.

This doesn't mean the same file will be able to run under both Windows and
Linux, quite the contrary.
So it's simple a Linux program capable of editing (infection) to different
executable formats, as well as a Windows program capable of the same.

I hope this explanation clears up any confusion as to the possibility of
such a virus.

As for spreading, Benny (the author of Winux) thinks that it should be able
to spread from Linux to Windows, as many users have a FAT (Windows)
partition mounted, for exchanging data. As far as I know he haven't
explained how the Windows version of Winux would spread to Linux.


Bryan Østergaard
bostergaard@siticom.com

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