Windows malware

May brought a few surprises, with old email worms climbing to the top of the rankings, and a warning of more to come. This month’s Top Twenty also features two classic file viruses.

It’s interesting that the virus writers who are creating Trojan downloaders are actively varying the type of files downloaded, ranging from obviously malicious programs to adware.

Greediest Trojan e-payment systems, stealthiest malicious program, most common malicious program in email traffic, most common Trojan family and others.

Warezov and Zhelatin regularly cause virus outbreaks, hit the headlines, and create a huge amount of work for virus labs around the world, but it’s NetSky.t.

It’s usual for the leader in our online rankings to change, but this month’s leader is very unusual.

Greediest Trojan e-payment systems, stealthiest malicious program, most common malicious program in email traffic, most common Trojan family and others.

This report provides an overview of different types of keyloggers, gives examples of losses caused by keyloggers, and provides recommendations on how to protect against them.

Greediest Trojan e-payment systems, stealthiest malicious program, most common malicious program in email traffic, most common Trojan family and others.

Nevertheless, Trojan-Downloader programs, the most widespread class of Trojans, remain among the leaders: representatives of this class are in second and fourth place in our January rankings.

For the moment at least, all Warezov variants are being beaten back by Bagle and other malicious programs. This is supported by the fact that only Warezov.do has remained in the ratings, and in seventeenth place at that.

Kaspersky Lab presents the Online Scanner Top Twenty for December 2006

My thoughts on Jim Allchin’s comments

Yesterday, we added detection for Virus.Win64.Abul.a to our antivirus databases.

We’ve been receiving a number of new samples of Trojan-Downloader.Win32.Delf.awg from users. The good news is that KAV 6.0 and KIS detect these new modifications of Delf proactively.

We’ve noticed an increase in the prevalence of Y!/MSN-aware worms. These rely on various social engineering tricks to lure the user into a malicious website.