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BitDefender released today a list of the top ten e-threats detected in May. It's trojans all the way (almost) with these simple, user-interaction driven pieces of malware occupying no less than six of the ten positions, including the top three.

First place in the BitDefender top ten goes to an infection technique, rather than a piece of malware. The autorun.inf exploitation code found in threats as diverse as Conficker and Sality tops out at 9.93% of detections, making it the most widespread exploit and the top e-threat of the month.

The positively ancient Trojan.Clicker.CM, a popup-serving program, can be found in second place with a whopping 9.23% of detections.

In third place is the Wimad trojan, an e-threat which masquerades as a video player, with 5.34% of detections.

A lowly bit of SWF exploit code, heavily used in malicious and compromised websites the world over, can be found in fourth, at 4.33%. Conficker is on the up again, for some reason, climbing in fifth position this month with 3.12% of detected infections.

A polymorphic file infector claimed sixth place this month, and if that sounds dangerous, it is. The virus infects executable files as well as network shares, re-writing itself in the process to avoid signature-based

Once such an infected file gets executed directly, or the share it’s in gets opened with the "Autorun" option enabled, the virus installs a rootkit on the affected computer. The rootkit gives an attacker complete control, while the virus itself, oddly, acts as a port-scanner trying to find open UDP services on random computers.

The Storm Worm, in seventh place, is back from the e-dead. It returns as a dropped component, that is, it is not spreading on its own, but rather it is being installed by some other e-threat, presumably to be used as a "remote control" for the infected computer.

Trojan.Autorun.AET, a trojan which also spreads through shared folders via the Autorun misfeature in Windows, is in ninth place this month. And finally, the Trojan.JS.PYV closes the list at number ten, a new entry with 1.73% of detections.

BitDefender’s May 2009 Top 10 E-Threat list includes:

Pos. Name %
1 Trojan.AutorunINF.Gen - 9.93
2 Trojan.Clicker.CM - 9.23
3 Trojan.Wimad.Gen.1 - 5.34
4 Exploit.SWF.Gen - 4.33
5 Win32.Worm.Downadup.Gen - 3.12
6 Win32.Sality.OG - 2.25
7 Trojan.Exploit.ANPW - 2.17
8 Dropped:Trojan.Peed.Gen - 1.9
9 Trojan.Autorun.AET - 1.87
10 Trojan.JS.PYV - 1.73
OTHERS - 58.13

About BitDefender®

BitDefender is the creator of one of the industry's fastest and most effective lines of internationally certified security software. Since its inception in 2001, BitDefender has continued to raise the bar and set new standards in proactive threat prevention. Every day, BitDefender protects tens of millions of home and corporate users across the globe - giving them the peace of mind of knowing that their digital experiences will be secure. BitDefender solutions are distributed by a global network of value-added distribution and reseller partners in more than 100 countries worldwide. More information about BitDefender and its products are available at the company’s security solutions press room. Additionally, BitDefender’s provides background and the latest updates on security threats helping users stay informed in the everyday battle against malware.

For more information see

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Contact details:

Mike Ottewell
MJO PR for BitDefender UK
Tel: 01782 664 886

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, Computing & Telecoms, for more information visit