Computer Crime Research Center


February virus activity report

Date: March 09, 2005
Source: Computer Crime Research Center
By: CCRC staff

The Ukrainian Antivirus Center has summarized the results of virus activity in February 2005.

The TOP 10 most dangerous viruses in February is as follows:

1. I-Worm.Zafi.d
2. I-Worm.Bagle.ay
3. I-Worm.Mydoom.m
4. I-Worm.NoDoom.aa
5. I-Worm.Maslan.b
6. I-Worm.Bagle.ah
7. I-Worm.NoDoom.q
8. I-Worm.Bagle.bc
9. Trojan.Spy.HTML.Bankfraud
10. I-Worm.Bagle.z

As before, computers were infected with Trojan programs, Backdoor programs (remote access), and also Adware:

1. Trojan.Win32.StartPage
2. Trojan.Win32.Agent
3. Backdoor.SdBot
4. Backdoor.RBot
5. TrojanDownloader.Win32.IstBar
6. TrojanDownloader.Win32.Dyfuca
7. Trojan.Win32.Dialer
8. Win32.Parite.b
9. Adware.Win32.WinAD
10. Adware.Win32.Gator

February leaders I-Worm.Zafi.b and I-Worm.Bagle.ay went up as swiftly as new modification of the Bagle worm appeared. I-Worm.Mydoom.m took the third place, this worm continues to multiply and breed in Ukraine. According to the Ukrainian Antivirus Center statistics, the number of users who receive letters with the attached I-Worm.Mydoom.m will not decrease next month.

In February there was a general virus background along with insignificant fluctuations with the advent of new network worms or their modifications. Late in February and in the early March, 8 new modifications of e-mail worms I-Worm.Bagle were detected. These versions are lightly different from their precursors, though their authors managed to take in users who did not upgrade their antiviral software recently.

CCRC experts can't say that these worms have brought some significant damage, but their massive character caused a certain bustle not only among users, but often among security experts. On the whole, as compared to some past months, there were no obvious shifts.

CCRC join traditional instructions of antivirus software developers: please buy new software products and update virus bases in time.

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