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The Internet threat alert status is currently normal. At present, no major epidemics or other serious incidents have been recorded by Kaspersky Lab’s monitoring service. Internet threat level: 1

Trojan-Downloader.JS.Agent.gdn

Detected Jul 18 2011 22:14 GMT
Released Jul 19 2011 08:06 GMT
Published Oct 10 2011 07:00 GMT

Technical Details
Payload
Removal instructions

Technical Details

A trojan program that opens various websites in the browser without the user's knowledge. It is a HTML-page containing JavaScript. Depending on the version, it may be between 1 and 400 kB.


Payload

After opening the infected site in the browser, the trojan tries to open an external resource in the hidden frame. Depending on the version, it opens various resources which may be malicious, e.g.:

http://***ngurj.com/count11.php
http://***bili.com/count3.php
http://***cord.com/count1.php
http://***oas.com/count0.php
http://***tial.com/count30.php
http://***metal.com/count29.php
http://***huxnh.cz.cc/count27.php
http://***huxnh.cz.cc/count28.php
http://***jpzrv.cz.cc/count26.php
http://***jpzrv.cz.cc/count25.php
http://***umzmi.cz.cc/count23.php
http://***dqonv.cz.cc/count22.php
http://***wpcn.cz.cc/count21.php
http://***arer.com/count20.php
http://***exper.com/count19.php
http://***elli.com/count5.php
http://***cosi.com/count2.php
http://***msroy.cz.cc/count21.php
http://***stor.com/count28.php
http://***sfbvksbfvkfsbvks.ru/index.php?tp=41e8265b85752fe4
These links did not work when creating the description.


Removal instructions

If your computer has not been protected with anti-virus software and has been infected with malware, you will need to take the following actions to delete this:

  1. Delete the original program file (its location on the infected computer will depend on how the program got onto the computer).
  2. Clear the Temporary Internet Files directory which may contain infected files (How to delete infected files in the Temporary Internet Files folder?):
    %Temporary Internet Files%
  3. Run a full Kaspersky Antivirus scan of the computer with updated antivirus databases (download trial version).


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Trojan-Downloader

Programs classified as Trojan-Downloader download and install new versions of malicious programs, including Trojans and AdWare, on victim computers. Once downloaded from the Internet, the programs are launched or included on a list of programs which will run automatically when the operating system boots up.

Information about the names and locations of the programs which are downloaded are in the Trojan code, or are downloaded by the Trojan from an Internet resource (usually a web page).

This type of malicious program is frequently used in the initial infection of visitors to websites which contain exploits.


Other versions