How to install skdet for rkhunter for Performing Suckit Rookit additional checks?

*OS: Linux Mint 18.2 Cinnamon 64-bit* Although I don't use the rkhunter much, probably several times a year, today I decided to look at it. I found in rkhunter log: /var/log/rkhunter.log that it seems to lack some skdet binary in the following section: Performing Suckit Rookit additional checks where it states, that: Running skdet command [ Skipped ] Info: Unable to find the 'skdet' command Since there's no available package under this name, I wonder what it actually is, and quite frankly, how to install it?