Well, it turns out to be a false alarm after all. The folks over at Kaspersky Lab, McAfee and Trend Micro took a closer look and announced that this was incorrect. Apparently it was flagged as a Trojan because it used pirated WinRAR compression software that made the file look very similar to known malicious programs.
So for those of you who are worried that you’ve downloaded a Trojan, especially if you had tried to run the file in question (BootableUSB/Program Files/WinRar/WinRar v3.71 exe in AT&T internal data.rar) – fret not. You didn’t just install another Trojan horse onto your computer.