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BitDefender reports more versions of the same generic malware.

The first three positions of BitDefender’s ‘ Top Ten’ Malware report for October are occupied not by single pieces of malware, but by generic signatures - detection rules which stand in for all the malware using a particular infection or obfuscation technique.

Indeed, the first position is occupied by trojan downloaders, a category which, through such exponents as the Peed trojan (aka Storm worm) has made headlines recently.

An old exploit takes second position, presumably due to the fact that it is just old enough to have found its way into the code of many different worms as one more trick to try when attempting an infection but still not old enough that there doesn't exist a sizeable population of unpatched machines anymore.

On the third position stand files detected as Packer.Malware.NSAnti.J, which are actually programs that had been packed/protected with a protection system called NSAnti, used by malware authors to bypass anti-virus protection and to hide malware contents. The packer itself is polymorphic and has the ability to detect if it's running in a virtualized environment (as in an antivirus countermeasure) and to try crashing it upon detection, in an attempt to make automated detection of new versions harder.

The following few places are occupied by old and very old mass mailer viruses, proving once again that, despite the wonders of backups and highly reliable computers, viruses never truly die. Unfortunately, the Sality.M virus is yet again present in the top ten, hovering in one of the bottom places as it has done for most of the year.

"All in all, it's been a rather eventful month," declared Viorel Canja for BitDefender. "We're seeing lots and lots of new viruses and a general tendency towards ever-stealthier malware which gets updated at a fantastic clip. Once again, B-HAVE and other automated detection techniques have proved crucial in keeping our customers safe".

October’s Top Ten Listing

1. BehavesLike:Trojan.Downloader 20.36 %

2. Exploit.Win32.WMF-PFV 17.51 %

3. Packer.Malware.NSAnti.J 10.49 %

4. Win32.Netsky.P@mm 6.56 %

5. Win32.NetSky.D@mm 2.06 %

6. Win32.Netsky.AA@mm 2.00 %

7. Win32.Nyxem.E@mm 1.90 %

8. .J Trojan.VBS.Autorun 1.79 %

9. Win32.Sality.M 1.46 %

10. Trojan.Agent.AFIS 1.43%

Others 34.43 %

For further details on the latest malware detected in the wild, please visit BitDefender’s Defense Portal site at:

About BitDefender®

BitDefender is a leading global provider of security solutions that satisfy the protection requirements of today's computing environment. The company offers one of the industry's fastest and most effective lines of security software, setting new standards for threat prevention, timely detection and mitigation. BitDefender delivers products and services to over 41 million home and corporate users in more than 180 countries. BitDefender has offices in the United States, the United Kingdom, Germany, Spain and Romania. Further information about BitDefender can be obtained by visiting:

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Contact details:

Mike Ottewell
MJO Associates for BitDefender UK
Tel: 01538 361217

Nick Billington
BitDefender Country Manager
(UK and Ireland)
Tel:- 0845 130 5096
Fax:- 0845 130 5069

This press release was distributed by ResponseSource Press Release Wire on behalf of MJO Associates in the following categories: Consumer Technology, Personal Finance, Business & Finance, Computing & Telecoms, for more information visit