From Security Week
Security experts say that a new version of the increasingly notorious Vawtrak malware has been spotted with significant code and configuration changes.
Targets of the malware have included customers of banks all around the world, including the U.S., Poland and Germany. According to Sophos, Vawtrak was the second-most popular malware distributed by Web-based exploit kits during September and November.
Don Jackson, director of threat intelligence at PhishLabs, blogged that the attackers appear to be responding to the attention they are getting from malware analysts and investigators by adopting modern anti-analysis tactics such as virtual machine detection and anti-debugging methods designed to frustrate forensic analysis.