Date: Tue, 13 Nov 2001 12:39:51 -0500 (EST) From: "Andrew R. Reiter" <arr@FreeBSD.org> To: Stefan Probst <stefan.probst@opticom.v-nam.net> Cc: freebsd-security@FreeBSD.org, Rob Hurle <rob@coombs.anu.edu.au> Subject: Re: Adore worm Message-ID: <Pine.NEB.3.96L.1011113123918.48186A-100000@fledge.watson.org> In-Reply-To: <5.1.0.14.2.20011114000437.02050a70@MailServer>
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It's not a worm, unless it's part of a larger system, it is a backdoor.
I'd reinstall.
On Wed, 14 Nov 2001, Stefan Probst wrote:
:Good Evening,
:
:sorry for newbie-posting, but I don't have too much time to sift through
:archives....
:
:Looks like my FreeBSD 4.2 Box (FreeBSD 4.2-RELEASE (GENERIC)) got hit by a
:worm - or infested by purpose:
:
:I found a new directory /usr/lib/.fx/
:which contains all kind of stuff.
:One README file says:
:>%cat README
:> AdoreBSD 0.34 - Based off Linux Adore by Stealth
:> Copyright (c) 2001 bind@gravitino.net
:>
:>Developed on FreeBSD 4.3-STABLE
:>
:>Installation:
:> # make; make load
:>
:>Features:
:> * hide file or directory from view
:> * make processes invisible
:> * hide promiscuous flag and syslog messages
:> * execute as root
:> * hide sysctl mib entries
:> * netstat service hiding
:> * authentication
:> * module hiding
:
:I can't use "ps" anymore ("cannot fork" or "segmentation fault - core dumped").
:"rc.conf" was modified and three lines with "/bin/xterm" added. I deleted
:this "xterm" program, since it was also created/modified by the worm.
:"rc" itself shows the date of the infection, but I don't know, what was done.
:
:Anything known? Any ideas what to do? Looking forward to pointers....
:Rgds,
:Stefan
:
:
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:
--
Andrew R. Reiter
arr@watson.org
arr@FreeBSD.org
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