Re: chkrootkit and LKM?

From: Blade Runner (blade_at_seven.com.br)
Date: 06/17/03

  • Next message: Aaron Cheek: "SNMP search for printers?" 
    Date: Tue, 17 Jun 2003 16:47:52 -0300 (BRT)
To: incidents@securityfocus.com

    You can try booting your server with knoppix ( http://www.knoppix.org ), and
    look for hidden files.

    If possible, do not allow Loadable module support , maybe this can avoid
    future problems with lkm.

    I am not sure if building a new kernel works. But if you have good results
    with that, tell me.

    Sorry about the porr English.

    []'s

    > On Monday 16 June 2003 10:59, Janus N. wrote:
    >> 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?
    >
    > What does "chkrootkit -x lkm" return? If anything...
    >
    > If it shows PIDs you'll want to hunt through /proc manually for those
    > processes.
    >
    > Cheers, -Ali
    >
    > --
    > OpenPGP Key: 030E44E6
    > --
    > Was I helpful?: http://svcs.affero.net/rm.php?r=packetknife
    > --
    > War is evil, but it is often the lesser evil. -- George Orwell
    > 

    -- 
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