Threat Description


Category: Malware
Type: Trojan
Platform: W32

Summary is a trojan that downloads and executes three files from the web.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.

Technical Details

The trojan downloader's file is 13824 bytes long PE executable. It has not been packed by any executable compressor.

It contains a small script engine that the trojan uses to execute a script embedded in the trojan body. The script downloads three files from the domain ''. We have reported the abuse to the ISP hosting the website.

The files are stored into the following locations:

%TEMP%/mute[randomnumber].exe  %TEMP%/volume[randomnumber].exe  %TEMP%/bass[randomnumber].exe   

For example:

C:\Documents and Settings\user\Local Settings\Temp\mute41.exe   

The downloaded files are detected as '', '' and 'Trojan-Dropper.Win32.Agent.jw'.


Detection Type: PC
Database: 2005-05-23_03

Technical Details:Otto Ebeling; May 26th, 2005


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