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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.ex

Detected Apr 27 2007 17:51 GMT
Released Apr 27 2007 17:51 GMT
Published Jun 22 2007 08:32 GMT

Technical Details
Payload
Removal instructions

Technical Details

This Trojan downloads other programs via the Internet and launches them on the victim machine without the user’s knowledge or consent. The Trojan components vary in size from 7 to 19KB. It is written in JavaScript.

Payload

Once launched, the Trojan downloads a file from the following URL:

http://www.tankersite.com/1/*****/zerr.exe

At the moment of writing, this link was not working.

The downloaded file will be saved as:

C:\1.exe

The file will then be launched for execution.


Removal instructions

If your computer does not have an up-to-date antivirus, or does not have an antivirus solution at all, follow the instructions below to delete the malicious program:

  1. Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
  2. Delete the following file:
    C:\1.exe
  3. Update your antivirus databases and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).

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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.


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