[ Thanks to Linuxsecurity.com for this
link. ]
“Chkrootkit does a good job checking of every part of the system
trying to search rootkits or LKM trojans. Let’s download the
package from the official home page of the project:
http://www.chkrootkit.org. When I wrote this article the latest
version is 0.43 that contain some improvements as new rootkits
detection (AjaKit and zaRwT), new CGI backdoors detection, the new
function ‘-n’ used to skip NFS mounted directories and many minor
bugs corrections. A complete list of all the trojans and CGI
backdoors detected is available from the home page of the project.
Once downloaded the package we are ready to compile it. Let’s
unpacking with the command ‘tar xzf chkrootkit.tar.gz’ and enter in
the new directory with ‘cd chkrootkit-0.43/’. At this point give
‘make sense’ to compile the program and after that we are really
ready to launch ‘./chkrootkit’ to test immediately the integrity of
our system. But this isn’t all…”