content: It appears to be their proprietary tool for infecting files. One of the troubleshooting guides mentioned that Firefox 35 and uTorrent 3.4.2 can be Melted and stay invisible most anti-virus applications. It appears they checked daily to make sure the infection apps stayed invisible. It might be a good idea to uninstall and redownload fresh copies of Firefox and Utorrent, since it is undetectable.