When I run rkhunter, it outputs this log with warnings (too long to post here): http://pastebin.com/hW6C5LGU
And when I run chkrootkit it outputs this with a warning about Operation Windigo/Ebury: http://pastebin.com/ZqTBfGyJ
It says "Searching for Linux/Ebury - Operation Windigo ssh... Possible Linux/Ebury - Operation Windigo installed"
Is this something I should be worried about? If so, what does it do and how do I remove it, should I do a full reinstall?