Malware researchers investigating a Trojan linked in a gaming forum as a how-to video for
Diablo III got a surprise when the hacker started chatting with them—through a feature in the malware.
Franklin Zhao & Jason Zhou of antivirus company AVG were looking for keylogging code in the malware with a debugger after downloading it to a virtual machine when a chat box popped up. The hacker asked, in Chinese, “What are you doing? Why are you researching my Trojan?”