Hacker uses malware built-in chat to toy with researchers

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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?”

http://arstechnica.com/security/2012/06/hacker-uses-malware-built-in-chat-to-toy-with-researchers/