Rootkit Hunter - rkhunter - scans files and systems rootkits, backdoors, sniffers, and malware

Rootkit Hunter - rkhunter

Rootkit Hunter scans files and systems for known and unknown rootkits, backdoors, sniffers, and malware. The application consists of the main shell script, a few text-based databases, and optional Perl scripts. It can recognise and run external applications like 'skdet' and 'unhide'. It should run on almost every Unix clone.

$ sudo aptitude install rkhunter

After install run tis comand:

$ sudo rkhunter --checkall

web:
http://rkhunter.sourceforge.net/
http://www.rootkit.nl/projects/rootkit_hunter.html