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HTML_IFRAME.MJSM

October 09, 2012
 Analysis by: Nice Yutuc
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan may be hosted on a website and run when a user accesses the said website.

This is the Trend Micro detection for Web pages that were compromised through the insertion of a certain IFRAME tag. Once a user visits an affected Web page, this HTML script launches a hidden IFRAME that connects to a malicious URL.

  TECHNICAL DETAILS

File Size:

1,224 bytes

File Type:

HTML, HTM

Initial Samples Received Date:

07 Feb 2012

Arrival Details

This Trojan may be hosted on a website and run when a user accesses the said website.

Other Details

This is the Trend Micro detection for Web pages that were compromised through the insertion of a certain IFRAME tag.

Once a user visits an affected Web page, this HTML script launches a hidden IFRAME that connects to a malicious URL.

NOTES:

Once an unsuspecting user visits an affected Web page, this HTML iFrame connects to the following URLs to download a possible malicious script.

  • http://www.{BLOCKED}5.com/js/2.asp
  • http://www.{BLOCKED}5.com/js/tj1.htm

As a result, routines of the downloaded script are also exhibited on the affected system.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.760.03

FIRST VSAPI PATTERN DATE:

07 Feb 2012

VSAPI OPR PATTERN File:

8.761.00

VSAPI OPR PATTERN Date:

08 Feb 2012

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as HTML_IFRAME.MJSM. 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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