You should take a look at this.
It is spreading fast!
http://blog.sucuri.net/2015/03/pseudo-darkleech-server-root-infection.html -- Bruno Accioly
This plugin is one of those I immediately install after setting up a new wordpress. It is easy to run a complete scan of the wordpress-site and the anti malware plugin even repairs infected files. This feature saves a lot of time, if many files of the custom-files in a wordpress-installation got infected. I am really happy that I found this plugin! Thanks Eli! -- Sir Apfelot