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chkproc: Warning: Possible LKM Trojan installed

Posted on 2011-02-11
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Last Modified: 2012-05-11
I got the below email warning from my server and not sure how to proceed with it.
I've gotten it a few time and the last couple of times I've just ignored it.


/var/www/mrtg/tcp.log

/usr/lib/php/.registry /usr/lib/php/.registry/.channel.pecl.php.net /usr/lib/php/.registry/.channel.__uri /usr/lib/php/.channels /usr/lib/php/.channels/.alias
You have     2 process hidden for readdir command
You have     2 process hidden for ps command
chkproc: Warning: Possible LKM Trojan installed

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Question by:sobeservices2
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6 Comments
 
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Assisted Solution

by:de2Zotjes
de2Zotjes earned 500 total points
ID: 34877983
Do you get this mail from the very first time you ever ran the program that sends this mail ? (some type of rootkit checker I suppose)

If you run the rootkit detector for a long time and at some point in time you start getting this mail, it is a strong indicator you have a rootkit installed on your system. If that is the case the only sensible course of action is to do a full reinstall of the system.

If on the other hand the report has come out of the checker since the first time you ran it this is probably a false positive. Still necessary to inspect further to find out what exactly is hidden in what manner, but no cause for alarm.
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Author Comment

by:sobeservices2
ID: 34881497
"If on the other hand the report has come out of the checker since the first time you ran it this is probably a false positive. Still necessary to inspect further to find out what exactly is hidden in what manner, but no cause for alarm."

I understand but I keep getting it. how can I inspect further.

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LVL 6

Accepted Solution

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de2Zotjes earned 500 total points
ID: 34883312
check in the mail you receive what executable is sending the mail. Start a shell and run the command from there. Try with extra verbosity or debug setting. Read the man page for the executable, perhaps it has a settings file where you can tune the sensitivity.
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Author Comment

by:sobeservices2
ID: 34899330
What do you mean check the shell and run command from there what commands?
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Author Closing Comment

by:sobeservices2
ID: 34899337
Good job
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Author Comment

by:sobeservices2
ID: 34899341
Took me in the right directions
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