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McAfee Avert Labs blog yesterday:
Two weeks ago I blogged about a new virus–W32/Xpaj–found in the wild by McAfee researchers and actively spreading around the world. Since then we have closely monitored the change in spread and severity of the virus, improved generic detection for future W32/Xpaj instances, and added cleaning and proper repair for all the files infected by the virus. Today I want to share more news related to this threat.
Further analysis has revealed some interesting details about the malicious behavior of W32/Xpaj. The Virus is building a widespread “zombie” network, by taking control thousands of Internet-connected computers. The new botnet is in its infancy, although thousands of machines have been infected during last two weeks. The botnet infects computers around the world and has spread across many countries. The attacks are mostly aimed at enterprises, but they have now spread to consumer machines as well. Based on multiple characteristics and our own research, the virus is most probably the work of eastern European cybercriminals.
Most bots are connected to a central location from where one machine can control the entire botnet. W32/Xpaj, on the other hand, deploys several control channels to communicate and control its bots. It employs the same techniques used by Srizbi and Conficker; that is, it uses randomly generated DNS names for backup control servers. Even though W32/Xpaj does not know where the control server is, it knows how to search for it, making it possible to predict which host is in use on a given day.
Continue reading in http://www.avertlabs...rowing-rapidly/
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