Analysis by: Mark Joseph Manahan
 Modified by: Anthony Joe Melgarejo
 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

Infection Channel: Downloaded from the Internet

This Trojan executes when a user accesses certain websites where it is hosted.

This is the Trend Micro detection for files that contain malicious IFRAME tags. Once a user visits an affected Web page, this HTML script launches a hidden IFRAME that connects to a malicious URL. It redirects browsers to certain sites. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size: Varies
File Type: HTML, HTM
Initial Samples Received Date: 26 Oct 2012
Payload: Steals information, Connects to URLs/IPs

Arrival Details

This Trojan executes when a user accesses certain websites where it is hosted.

Other Details

This is the Trend Micro detection for files that contain malicious IFRAME tags.

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

It redirects browsers to the following sites:

  • http://googleads.g.doubleclick.net-www.google.com.hk.{BLOCKED}ai.net/doit.asp

However, as of this writing, the said sites are inaccessible.

NOTES:

This URL is used for phising. It tries to trick users to think that it is a legitimate site while it tries to steal sensitive information such as user names and passwords.

Trend Micro has already blocked this URL.

  SOLUTION

Minimum Scan Engine: 9.300
VSAPI OPR PATTERN File: 9.489.00
VSAPI OPR PATTERN Date: 27 Oct 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.CAO. 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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