Rootkit Hunter [rkhunter]

Rootkit Hunter (RKH) is an easy-to-use tool which checks computers running UNIX (clones) for the presence of rootkits and other unwanted tools.

project page

rkhunter installation

sudo apt install rkhunter

Update the entire file properties database

sudo rkhunter --propupd

Check for updates to database files

sudo rkhunter --update

Check the local system

sudo rkhunter --check