From owner-freebsd-questions@FreeBSD.ORG Fri Apr 11 00:37:33 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0ABD837B401 for ; Fri, 11 Apr 2003 00:37:33 -0700 (PDT) Received: from hotmail.com (f81.law15.hotmail.com [64.4.23.81]) by mx1.FreeBSD.org (Postfix) with ESMTP id 446C943FA3 for ; Fri, 11 Apr 2003 00:37:32 -0700 (PDT) (envelope-from securifymybox@hotmail.com) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 11 Apr 2003 00:37:32 -0700 Received: from 80.86.100.172 by lw15fd.law15.hotmail.msn.com with HTTP; Fri, 11 Apr 2003 07:37:31 GMT X-Originating-IP: [80.86.100.172] X-Originating-Email: [securifymybox@hotmail.com] From: "no name" To: rofug@rofug.ro Date: Fri, 11 Apr 2003 07:37:31 +0000 Mime-Version: 1.0 Content-Type: text/plain; format=flowed Message-ID: X-OriginalArrivalTime: 11 Apr 2003 07:37:32.0183 (UTC) FILETIME=[3640F270:01C2FFFD] cc: freebsd-questions@freebsd.org Subject: LKM problem X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Apr 2003 07:37:33 -0000 chkrootkit output follows (stripped out useless stuff): Checking `chfn'... INFECTED Checking `chsh'... INFECTED Checking `date'... INFECTED Checking `ps'... INFECTED Checking `lkm'... You have 2 process hidden for readdir command You have 13 process hidden for ps command Warning: Possible LKM Trojan installed Can anyone please advise ? i wouldn't want to reinstall the system from scratch (with all it's requirements that would take about 3-4 days) i tried cvsup src-all and make world but the infected binaries remained i even tried compiling by hand in /usr/src/bin/ls but the resulted binaries would still appear infected. Assuming there was something wrong with chkrootkit i tried checking a ls binary compiled on a similar system and it found it clean. I couldn't use the 'ps' binary from the remote system root@box ~/bin# ./ps ps: proc size mismatch (36936 total, 1060 chunks) root@box ~/bin# If anyone can help i would like to find that rootkit and study it Thanx in advance _________________________________________________________________ The new MSN 8: smart spam protection and 2 months FREE* http://join.msn.com/?page=features/junkmail