Trojan-Downloader.JS.Agent.fnr

Technical Details
Payload
Removal instructions

Technical Details

This Trojan downloads another program to the computer and launches it for execution without the user's knowledge. It is an HTML document containing Java Script. It is 368 bytes in size.

Payload

When an infected page is opened, the Trojan decrypts its obfuscated code using Java Script. The Trojan then redirects the user to the resource located at the following link:

http://wi***ert.nl/x.html

This link leads to an HTML page. When this page is opened, the following message is displayed:

PLEASE WAITING 4 SECOND...

The following resource is accessed in a hidden frame:

http://hi***ace.in/stat/?up=image&page=151&done=disabled&account=ecard&next=param

The Trojan then downloads a page from the URL shown below:

http://bro***islock.cz.cc/scanner1/?afid=24

This link opens a fraudulent site that imitates the activity of an antivirus scanner. The user is also asked to download the file "antivirus.exe" from the following link:

http://ber***entkin.cz.cc/go/?afid=24&time=128215821

This file is 165 376 bytes in size. It is detected by Kaspersky Anti-Virus as Trojan.Win32.FraudPack.bhmw.

Removal instructions

If your computer does not have antivirus protection and has been infected by this malicious program, follow the instructions below to delete it:

1. Delete the original Trojan file (its location will depend on how the program originally penetrated the infected computer).
2. Empty the Temporary Internet Files directory, which may contain infected files (see How to delete infected files from Temporary Internet Files folder?):

   %Temporary Internet Files%

3. Perform a full scan of the computer using Kaspersky Anti-Virus with up-to-date antivirus databases (download a trial version).

[Description: Shcherbina Artem, 30th of August, 2010]
[MD5: 4e5089eb109704f507e4e29c482c7634]