From owner-freebsd-security@FreeBSD.ORG  Fri May 21 12:52:50 2004
Return-Path: <owner-freebsd-security@FreeBSD.ORG>
Delivered-To: freebsd-security@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 3ED9B16A4CE
	for <freebsd-security@freebsd.org>;
	Fri, 21 May 2004 12:52:50 -0700 (PDT)
Received: from prserv.net (asmtp1.prserv.net [32.97.166.51])
	by mx1.FreeBSD.org (Postfix) with ESMTP id A805143D39
	for <freebsd-security@freebsd.org>;
	Fri, 21 May 2004 12:52:49 -0700 (PDT)
	(envelope-from yann.luppo@attglobal.net)
Received: from razor (130.wf21.bltm.wswdc01r18.dsl.att.net[12.103.21.130])
          by prserv.net (asmtp1) with SMTP
          id <2004052119513825103jg6pme>
          (Authid: yann.luppo@attglobal.net);
          Fri, 21 May 2004 19:51:38 +0000
Message-ID: <021f01c43f3a$e7eb7f40$0f01a8c0@razor>
From: "RazorOnFreeBSD" <yann.luppo@attglobal.net>
To: <freebsd-security@freebsd.org>
Date: Fri, 21 May 2004 15:52:45 +0200
MIME-Version: 1.0
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2800.1409
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
X-Content-Filtered-By: Mailman/MimeDel 2.1.1
Subject: Hacked or not ?
X-BeenThere: freebsd-security@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Security issues [members-only posting]
	<freebsd-security.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>,
	<mailto:freebsd-security-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-security>
List-Post: <mailto:freebsd-security@freebsd.org>
List-Help: <mailto:freebsd-security-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>,
	<mailto:freebsd-security-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 21 May 2004 19:52:50 -0000

Hi,=20

I have a 4.9-STABLE FreeBSD box apparently hacked!
Yesterday I ran chkrootkit-0.41 and I don't like some of the outputs.=20
Those are:
chfn     ... INFECTED
chsh    ... INFECTED
date     ... INFECTED
ls         ... INFECTED
ps        ... INFECTED

But all the rest is NOT PROMISC, NOT INFECTED, NOTHING FOUND, NOTHING =
DELETED, or NOTHING DETECTED.
I know by the FreeBSD-Security archives that chkrootkit isn't perfect =
with FreeBSD versions 5.x
But I'm not in that case. So I'm a little bit afraid and as a newbie I =
don't really know what to do....
I tried "truss ls" to find something strange and here are the outputs =
with something... suspicious for me:

ioctl(1,TIOCGETA,0xbfbff534)                        =3D 0 (0x0)
ioctl(1,TIOCGWINSZ,0xbfbff5a8)                    =3D 0 (0x0)
getuid()                                                        =3D 0 =
(0x0)
readlink("etc/malloc.conf",0xbfbff490,63)        ERR#2 'No such file or =
directory'         #SUSPICIOUS
mmap(0x0,4096,0x3,0x1002,-1,0x0)              =3D 671666176 (0x2808d000)
break(0x809b000)                                        =3D 0 (0x0)
break(0x809c000)                                        =3D 0 (0x0)
break(0x809d000)                                        =3D 0 (0x0)
break(0x809e000)                                        =3D 0 (0x0)
.........................................................................=
..................and so on!

And if I am an intrusion victim.... what can I do ? How can I restore =
those files? and how can I find out how this cracker did to break my =
firewall? I mean where is the security hole?
PS: After verification on other commands declared not infected I found =
out this ERR#2 is common.... maybe I have another problem here!

Thanks everyone!
razor.