Re: Are Linux boxes vulnerable to be used by botnets?

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Author: Josef Lowder
Date:  
To: Main PLUG discussion list
Subject: Re: Are Linux boxes vulnerable to be used by botnets?
.
On Mon, 17 Mar 2008 09:17, Matt Graham wrote (in part)
> After a long battle with technology, Josef Lowder wrote:
> > This is all very interesting ... and confusing for my simple mind.
> > It sounds like most of the replies to my question pertain to
> > boxes that are used as "servers" and not just "regular users."
> > Or are we all "servers"?
>
> If you're running sshd/apache/smbd/postfix/sendmail/exim/telnetd/
> anything like that, then you are a server.


As far as I know, I am not running any of those things.

> > How can I determine if one of my computers has had something
> > like this done?
>
> "chkrootkit" is a starting point. tripwire is another


I don't have either of those ... and again it sounds like those
have something to do with checking things on a server box.

My system seems to have slowed down quite a bit (even when I don't
have any programs running) and I can't figure out why.

When I run 'top' I can only see the top 50 or so entries on my monitor
and I don't know how to see what else might be there farther down the
list.

And when I do 'ps -ef' (see the list below) how can I tell which,
if any, of those processes could be or should be eliminated ...
and how to do that?

-------------------------------------
root         1     0  0 Mar07 ?        00:00:03 init [5]
root         2     1  0 Mar07 ?        00:00:00 [ksoftirqd/0]
root         3     1  0 Mar07 ?        00:00:03 [events/0]
root         4     1  0 Mar07 ?        00:00:00 [khelper]
root         5     1  0 Mar07 ?        00:00:00 [kthread]
root         7     5  0 Mar07 ?        00:00:00 [kacpid]
root        81     5  0 Mar07 ?        00:00:00 [kblockd/0]
root       113     5  0 Mar07 ?        00:00:00 [pdflush]
root       114     5  0 Mar07 ?        00:00:01 [pdflush]
root       116     5  0 Mar07 ?        00:00:00 [aio/0]
root       115     1  0 Mar07 ?        00:00:09 [kswapd0]
root       704     1  0 Mar07 ?        00:00:00 [kseriod]
root       796     1  0 Mar07 ?        00:00:02 [kjournald]
root       938     1  0 Mar07 ?        00:00:00 udevd -d
root      1192     1  0 Mar07 ?        00:00:00 [khubd]
root      1577     1  0 Mar07 ?        00:00:12 [kjournald]
root      1583     1  0 Mar07 ?        00:00:00 [kjournald]
root      2359     1  0 Mar07 ?        00:00:40 /sbin/ifplugd -b -i eth0
rpc       2442     1  0 Mar07 ?        00:00:00 portmap
root      2466     1  0 Mar07 ?        00:00:00 syslogd -m 0
root      2483     1  0 Mar07 ?        00:00:00 klogd -2
root      2515     1  0 Mar07 ?        00:00:00 /usr/sbin/acpid
root      2551     1  0 Mar07 ?        00:00:00 rpc.statd
root      2635     1  0 Mar07 ?        00:00:03 cupsd
root      2780     1  0 Mar07 ?        00:00:00 [kgameportd]
root      2814     1  0 Mar07 ?        00:00:00 dhclient -1 -q -lf
/var/lib/dhcp/dhclient-eth0.leases -pf /var/run/dhc
xfs       3003     1  0 Mar07 ?        00:00:00 xfs -port -1 -daemon -droppriv
-user xfs
71        3018     1  0 Mar07 ?        00:00:00 dbus-daemon-1 --system
root      3033     1  0 Mar07 ?        00:05:21 hald
root      3180     1  0 Mar07 ?        00:00:00 /usr/bin/kdm -nodaemon
root      3189  3180 69 Mar07 tty7     7-01:53:38 /etc/X11/X -deferglyphs 16
:0 -auth /var/run/xauth/A:0-K9voZd
root      3190     1  0 Mar07 ?        00:01:00 nifd -n
nobody    3252     1  0 Mar07 ?        00:00:00 mDNSResponder
daemon    3268     1  0 Mar07 ?        00:00:00 /usr/sbin/atd
root      3322     1  0 Mar07 ?        00:00:00 xinetd -stayalive -reuse
-pidfile /var/run/xinetd.pid
root      3699     1  0 Mar07 ?        00:00:00 /opt/win4lin/bin/vnetd
clamav    3775     1  0 Mar07 ?        00:00:08 /usr/bin/freshclam
--config-file=/etc/freshclam.conf --quiet --daemon
root      3791     1  0 Mar07 ?        00:00:00 crond
root      3861     1  0 Mar07 ?        00:00:00 /usr/bin/lisa -c /etc/lisarc
root      3900     1  0 Mar07 tty1     00:00:00 /sbin/mingetty tty1
root      3901     1  0 Mar07 tty2     00:00:00 /sbin/mingetty tty2
root      3902     1  0 Mar07 tty3     00:00:00 /sbin/mingetty tty3
root      3903     1  0 Mar07 ?        00:00:00 login -- root
root      3904     1  0 Mar07 tty5     00:00:00 /sbin/mingetty tty5
root      3905     1  0 Mar07 tty6     00:00:00 /sbin/mingetty tty6
joe       4071     1  0 Mar07 ?        00:01:37 /usr/lib/gam_server
root      7763  3903  0 Mar10 tty4     00:00:00 -bash
joe      21126     1  0 Mar15 ?        00:00:00 /usr/lib/gconfd-2 13
root     17244  3180  0 12:24 ?        00:00:00 -:0
joe      17264 17244  0 12:24 ?        00:00:00 /bin/sh /usr/bin/startkde
joe      17325 17264  0 12:24 ?        00:00:00 /usr/bin/perl /usr/bin/mdkapplet
joe      17336 17264  0 12:24 ?        00:00:00 /usr/bin/perl /usr/bin/net_applet
joe      17349     1  0 12:24 ?        00:00:00 s2u --daemon=yes
joe      17370 17264  0 12:24 ?        00:00:00 /bin/sh /usr/bin/startkde
joe      17371 17370  0 12:24 ?        00:00:00 gnome-volume-manager
joe      17390     1  0 12:24 ?        00:00:00 kdeinit Running...
joe      17393     1  0 12:24 ?        00:00:00 dcopserver [kdeinit] --nosid
joe      17395 17390  0 12:24 ?        00:00:00 klauncher [kdeinit]
joe      17398     1  0 12:24 ?        00:00:00 kded [kdeinit]
joe      17410 17390  0 12:24 ?        00:00:00 /usr/bin/artsd -F 10 -S 4096
-s 60 -m artsmessage -c drkonqi -l 3 -f
joe      17412     1  0 12:24 ?        00:00:00 kaccess [kdeinit]
joe      17413 17264  0 12:24 ?        00:00:00 kwrapper ksmserver
joe      17415     1  0 12:24 ?        00:00:00 ksmserver [kdeinit]
joe      17417 17390  0 12:24 ?        00:00:00 kwin [kdeinit] -session
1014cd7d2d4000120328531400000141940000_1205781
joe      17419     1  0 12:24 ?        00:00:00 kdesktop [kdeinit]
joe      17422     1  0 12:24 ?        00:00:02 kicker [kdeinit]
joe      17424 17390  0 12:24 ?        00:00:00 xsettings-kde
joe      17426     1  0 12:24 ?        00:00:00 korgac --miniicon korganizer
joe      17427     1  0 12:24 ?        00:00:00 krandrtray -session
1014cd7d2d4000115565379600000042880006_1205781767_
joe      17429     1  0 12:24 ?        00:00:00 knotify [kdeinit]
joe      17554 17390  0 12:29 ?        00:00:00 kio_file [kdeinit] file
/home/joe/tmp/ksocket-joe/klauncherFALPab.slav
joe      17556     1  0 12:29 ?        00:00:00 kio_uiserver [kdeinit]
joe      17864 17390  1 12:33 ?        00:00:00 konsole [kdeinit]
joe      17865 17864  0 12:34 pts/1    00:00:00 /bin/bash
joe      17910 17865  0 12:34 pts/1    00:00:00 ps -ef



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