Recently, we blogged about systems compromised by W32.Virut that were observed downloading W32.Waledac.D (Kelihos). Symantec has followed the Waledac evolution for a number of years and have observed the botnet showing considerable resilience against take-down efforts conducted in the past. Waledac is traditionally known as a spamming botnet which has been observed to send up […]
Last week we saw how W32.Waledac was getting cozy with W32.Virut, but let us not forget about other spam botnets, like Trojan.Pandex (a.k.a. Cutwail), as they also persist in their propagation affairs.The people behind W32.Cridex have used many attack vectors to spread the malware, including taking advantage of exploit kits like Blackhole, or attempting to […]
Recently, we blogged about the file-infector virus known as W32.Virut and the botnet’s return to distributing new payloads. In the blog, we estimated that the Virut botnet currently consists of 308,000 unique Virut clients active in a single day. It was also noted that Virut had been observed distributing payloads with the functionality to send out […]
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