Threat Encyclopedia

JS_REDIRECT.SMF

Malware type: JavaScript

Aliases: No Alias Found

In the wild: Yes

Destructive: No

Language: English

Platform: Windows 98, ME, NT, 2000, XP, Server 2003

Encrypted: No

Overall risk rating:

Reported infections:

Damage potential:

Medium

Distribution potential:

Medium

Description: 

This JavaScript may be hosted on a Web site and run when a user accesses the said Web site.

This is the Trend Micro detection for certain obfuscated JavaScript files. Once loaded into the browser, it redirects users to sites that could possibly serve malicious files.

Read more about this threat incident in the Malware Blog entry "Searches for Free Printable Items Lead to Malicious Domains."

For additional information about this threat, see:

Description created: Jan. 26, 2010 2:27:54 AM GMT -0800


TECHNICAL DETAILS


File type: Script

Size of malware: Varies

Initial samples received on: Jan 26, 2010

Payload 1: Redirects to other sites

Details:

This JavaScript may be hosted on a Web site and run when a user accesses the said Web site.

This is the Trend Micro detection for certain obfuscated JavaScript files. Once loaded into the browser, it redirects users to sites that could possibly serve malicious files. The following are some of the sites where the user is redirected to:

  • http://{BLOCKED}table-pages.com/java/main.php
  • http://{BLOCKED}-be.cn/pdfs/main.php

This JavaScript runs on Windows 98, ME, NT, 2000, XP, and Server 2003.


Analysis By: Jessa De La Torre


SOLUTION


Minimum scan engine version needed: 8.900

Pattern file needed: 6.809.00

Pattern release date: Jan 28, 2010


Important note: The "Minimum scan engine" refers to the earliest Trend Micro scan engine version guaranteed to detect this threat. However, Trend Micro strongly recommends that you update to the latest version in order to get comprehensive protection. Download the latest scan engine here.

Solution:

For Windows ME and XP users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

 Step 1: Close all opened browser windows 

 Step 2: Scan your computer with your Trend Micro product to delete files detected as JS_REDIRECT.SMF  

*Note: If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.




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