chkrootkit finds rootkits in your Unix-Like system with the rootkit’s signatures.
With this procedure you can compile and use chkrootkit to detect rootkits.
Download all dependences:
# apt-get install aria2 gcc make
Download the tarball from the official repository:
$ aria2c ftp://ftp.pangeia.com.br/pub/seg/pac/chkrootkit.tar.gz
Extract the tarball typing:
$ tar -xvzf chkrootkit.tar.gz
Enter in the extracted folder (the last version now is the 0.53):
$ cd chkrootkit-0.53</code
Compile chkrootkit typing:
$ make sense
Execute chkrootkit without arguments to detect rootkits:
# ./chkrootkit
The official website of chkrootkit is: http://www.chkrootkit.org/