WireLurker would be used on 467 OS X app from the App Store Maiyadi which is an app store for Mac third parties in China. The apps have been downloaded 356 104 times having a chance to infect hundreds of thousands of users.
WireLurker once inside the computer searches for iOS devices connected via USB cable by installing third-party applications within the devices. WireLurker have a very complex structure, diversified in several versions, with obfuscated code and encrypted. Once installed WireLurker may use information such as contacts and iMessage. However, it would still be under development its ultimate purpose, then it would be a virus "without purpose" at the moment, but that could potentially cause many problems.
The best recommendation to avoid these problems is to not download applications from third-party stores. Apple offers its users several tools to avoid downloading suspicious, the best is to use the Mac App Store apps that are backed by Apple itself.