Explore the latest news and trends  

Sign up for our weekly security newsletter

Be the first to receive important updates on security


An E-Mail Worm, the New Bagle Infects Many Users

'Bagle.KT', a new variant of the notorious 'Bagle' family of worms was a recent discovery of PandaLabs on December 14, 2006. The firm says that the malware has already caused a number of damages, so users should exercise caution while opening e-mails.

The 'Bagle.KT' acts similar to its predecessors. An e-mail worm, it uses its own SMTP engine to spread itself to addresses it harvests on infected PCs.

The e-mail containing 'Bagle.KT' has different subjects, while there is no text in the message. The worm goes through a ZIP attachment in the e-mail message. The name of the attachment is like 'new_price%date%', where '%date%' is the date of the infection, for e.g., 'new_price12-Dec-2006'.

When the user opens the attachment, the worm becomes active, sending itself to all the e-mail ids it finds in the various files saved on the computer. The worm also attempts to download files from some Internet addresses. In addition, the worm creates a number of entries in the 'Windows Registry' so that it can run every time the computer is logged on.

Director of PandaLabs, Luis Corrons explains that even if 'Bagle.KT' is not a particularly dangerous variant, it has the typical characteristic of propagation. In order to spread, it uses an effective 'social engineering' technique such as mimicking a 'price list'. Corrons also says that the activity of the worm emphasizes the need to add proactive technologies to traditional anti-virus solutions. It would not be right to just leave the decision of opening e-mail to 'instinct'.

In an earlier warning 'F-Secure' said that since the viruses accessed a number of URLs and re-activated them, a 'Bagle' attack could be unavoidable. The company noted that the URLs were loaded with a new 188KB executable file, due to which they would automatically download once the computer is infected by the 'Bagle' virus.

The worm-carrying e-mail includes a 'gif' image, which shows the password needed to view the attachment. On running the attachment, it installs the file and opens a false 'error code' in 'Notepad' or 'Registry Editor'. The 'Bagle.KT' uses a 'rootkit' to keep its presence hidden on infected systems.

Related article: An Internet Hack That Lasted 12 Hours

ยป SPAMfighter News - 12/22/2006

3 simple steps to update drivers on your Windows PCSlow PC? Optimize your Slow PC with SLOW-PCfighter!Email Cluttered with Spam? Free Spam Filter!

Dear Reader

We are happy to see you are reading our IT Security News.

We do believe, that the foundation for a good work environment starts with fast, secure and high performing computers. If you agree, then you should take a look at our Business Solutions to Spam Filter & Antivirus for even the latest version of Exchange Servers - your colleagues will appreciate it!

Go back to previous page