BitDender’s Top Malware for May
Thursday, June 17th, 2010Top malware in May according to computer security company BitDefender is an Autorun trojan.
May’s top malware goes by the name of Trojan.AutorunInf.Gen and represents just over 13% of all global malware. It’s designed to use external hard drives, memory cards and flash drives to spread malware. And although Microsoft may have discarded its Windows Autorun feature from its latest operating systems and from Vista SP2, early versions are still vulnerable.
Next on the top malware list for May is the infamous Kido, or Conficker, which goes by the tag of Win32.Worm.Downadup. This nasty virus takes a bow for around 6% of global infections and attacks a Windows vulnerability. It spreads via local network computers and stops users trying to access Windows updates and security companies web pages. Latest versions of Windows has removed the vulnerability, but people using older operating systems should ensure that they have updated their operating systems and anti-virus applications.
In third place and close behind the Conficker on the top malware list is another Trojan which accounts for some 5% of all infections. It’s official name is Trojan.FakeAV.KUE and it’s based on JavaScript code. It creates anti-virus scams and the malware gets hosted either on sites that unknowingly carry the virus, or malicious sites. Once people download this type of malware, it triggers various fake alerts offering rogue antivirus software.
Coming fourth is the May top malware list is Win32.Sality.OG. It’s the only file infector virus in the top ten and it’s a device which appends its encrypted code to executable files (.exe and .scr binaries). It does this by deploying a rootkit which kills any antivirus applications on the computer. This means that it remains undetected and unable to carry out its malicious tasks.
In the fifth place is a new one to the top malware charts. It’s a Trojan and is responsible for a tad over 2% of infections. Called the Trojan.Swizzor.2, it acts as a pathfinder for a number of other pieces of malicious software.
BitDefender’s top malware chart for May includes:
- Trojan.AutorunINF.Gen 13,24%
- Win32.Worm.Downadup.Gen 5,84%
- Trojan.FakeAV.KUE 5,11%
- Win32.Sality.OG 2,68%
- Gen:Variant.Swizzor.2 2,12%
- Trojan.Autorun.AET 2,02%
- Gen:Heur.Krypt.24 2,01%
- Worm.Autorun.VHG 1,97%
- Gen:Variant.Rimecud.2 1,91%
- Exploit.PDF-JS.Gen 1,76%
One things is for sure, try to avoid any of the top malware for May.
Guest Article by Neil Camp


My name is Alan Potts and I'm the Editor of the Antivirus-BUYability web site and Managing Director of BUYability Limited. You can connect with me or keep up to date with new posts on this blog via the following social media sites: 








