Rkhunter
From James's Wiki
download source form site
https://sourceforge.net/projects/rkhunter/files/latest/download?source=typ_redirect
tar zxf rkhunter-1.4.4.tar.gz
cd rkhunter-1.4.4/ sudo ./installer.sh --install
By default, the log file '/var/log/rkhunter.log' will be created. It
will contain the results of the checks made by RKH.
run this after making changes to the config file
rkhunter --propupd