OSX/Keydnap uses a Tor2Web proxy for command and control. An installed launch agent, icloudproc, is automatically started by the OS, and listens on 127.0.0.1:9050. As noted by ESET, the main backdoor component (icloudsyncd) uses this proxy for communication purposes: “Keydnap is using the onion.to Tor2Web proxy over HTTPS to report back to its C&amp;C server