Threat Description

Trojan-Downloader:​W32/Kazy-17907

Details

Aliases: Trojan-Downloader:​W32/Kazy-17907, Gen:variant.kazy.17907
Category: Malware
Type: Trojan-Downloader
Platform: W32

Summary



This type of trojan secretly downloads malicious files from a remote server, then installs and executes the files.



Removal



Automatic Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.



Technical Details



This trojan-downloader appears to be related to a distribution of spam e-mails currently under way as of 5 April 2011, as hundreds of samples were submitted to our analysis systems in the last 24 hrs.

The spammed e-mail uses a social engineering attack to lure the recipient into clicking on an attached executable file. This attachment is actually the trojan-downloader, disguised as a legitimate document. The attachment uses a PDF file icon and the filename 'dhl.exe' to further disguise itself.

On clicking the file, the trojan-downloader is executed and creates a dummy svchost.exe process. It then injects a thread that downloads and executes a file from:

  • h t t p : / / puskovayaustanovka.ru/pusk[...].exe

At the time of writing, the domain is blocked by the Browsing Protection feature of our product.






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