Re: chkrootkit and LKM?

[Nathan Dornquast <nathan () aberon net>]

Doh!  Sounds likely you have a rootkit.  I recently had similar results 
on 2 of my servers (though each one only had 2 hidden procs).

I found some helpful hints at soohrt.org.  

Go to your /proc dir.  Type: for i in `seq 1 33000`; do test -f 
$i/cmdline && (cat $i/cmdline; echo $i); done
This will print a list of processes and their ID's.  You can match this 
against what ps is giving you.  Then ls the unlisted proc dirs.  Check 
what commands are running, from where, and what kind of enviroment.

Good luck.

-Nate

Janus N. Tøndering wrote:

> Hi
>
> I using a RHL9 as my workstation. A few days ago I downloaded chkrootkit
> and it consistently gives the same output (>20 hidden processes) when
> checking for LKM rootkit:
>
> Checking `lkm'... You have    38 process hidden for readdir command
> Warning: Possible LKM Trojan installed
>
> This is even after reboots. How can I check if this is actually the work
> of the LKM? Or any other rootkit for that matter?
>
> Regards,
> Janus N. Tøndering
>  



----------------------------------------------------------------------------
Attend the Black Hat Briefings & Training, July 28 - 31 in Las Vegas, the 
world's premier technical IT security event! 10 tracks, 15 training sessions, 
1,800 delegates from 30 nations including all of the top experts, from CSO's to 
"underground" security specialists.  See for yourself what the buzz is about!  
Early-bird registration ends July 3.  This event will sell out. www.blackhat.com
----------------------------------------------------------------------------