Highest Malware Levels Detected in 2009

Fortinet’s October 2009 Threatscape report has revealed the highest level of total malware detected in more than a year and four times greater than detected levels from the September Threatscape report.

Key highlights of the October Threatscape report include:

• Scareware celebrates Halloween and masks malicious intent: Extending threat activity from September, scareware again dominated this period in the form of rogue security software, posing as the security suite AntiVirus Pro 2010.
  
  Users are schemed into purchasing the software to resolve their alleged problems, while more dangerous implications unfold: downloaders contact a remote server in order to obtain malicious payload and receive updated copies.
  
  Other components may be bundled with scareware, such as ransomware and bot agent. Once an infection makes its way onto a system, the floodgates open up for cybercriminals. Such scareware activity pushed the pesky Virut and Netsky out of the top 10 malware list for the first time in over a year.

• Botnets make headway: The Trojan downloader Bredolab joined forces with scareware downloaders this period to add another element of surprise.
  
  Similar to the scareware framework, Bredolab reports to its network in order to obtain the latest components to download and this month downloaded the AntiVirus Pro 2010 installers. Through this download chain, Bredolab was also linked up to the notorious ZBot keylogger, bringing both a dangerous information-siphoning Trojan and a nasty scareware product together—a potent mix of threats, each one linking to different control sites.
  
  The two main Bredolab variants detected were W32/Bredo.G and W32/Bredolab.X, most notably included in fake DHL invoice spam campaigns.

• Affiliates extend scareware reach: No doubt scareware was the chart topper this month and the high threat levels can be attributed in part to the popular money-making affiliate programs that tempt participants with a handsome pay-out on each software download purchased. Tools and kits are readily available to participating affiliates, accelerating the distribution of scareware and other malicious components.