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Threat Encyclopedia

JS_ELECOM.SMB

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:

High

Distribution potential:

Medium

Description: 

This is the Trend Micro detection for component script files of JS_ELECOM.SMA bearing the file name WHAT.JPG. Such files have been found to contain the data variables used by JS_ELECOM.SMA and are usually obfuscated.

It may be hosted on a Web site and run when a user accesses the said Web site. It may be downloaded from remote sites by JS_ELECOM.SMA.

For additional information about this threat, see:

Description created: Jan. 21, 2010 12:58:47 AM GMT -0800


TECHNICAL DETAILS


File type: Script

Size of malware: Varies

Initial samples received on: Jan 19, 2010

Vulnerability used:  Microsoft Internet Explorer DOM Operation Memory Corruption Vulnerability (979352)

Related toJS_ELECOM.SMA

Details:

This is the Trend Micro detection for component script files of JS_ELECOM.SMA bearing the file name WHAT.JPG. Such files have been found to contain the data variables used by JS_ELECOM.SMA and are usually obfuscated.

It may be hosted on a Web site and run when a user accesses the said Web site. It may be downloaded from remote sites by JS_ELECOM.SMA.

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

Analysis By: Jessa De La Torre

Revision History:

First pattern file version: 6.792.03
First pattern file release date: Jan 21, 2010

SOLUTION


Minimum scan engine version needed: 8.900

Pattern file needed: 6.793.00

Pattern release date: Jan 21, 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: Remove malware files related to JS_ELECOM.SMB  

 Step 3: Scan your computer with your Trend Micro product to delete files detected as JS_ELECOM.SMB  

*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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