Analysis by: Christopher Daniel So
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Dropped by other malware

This Trojan may be dropped by other malware.

It inserts an IFRAME tag that redirects users to certain URLs. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size: 1,050 bytes
File Type: ASP
Initial Samples Received Date: 13 Dec 2011

Arrival Details

This Trojan may be dropped by other malware.

Other Details

This Trojan inserts an IFRAME tag that redirects users to the following URLs:

  • http://x. {BLOCKED}6.cn/a.htm

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

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.642.08
FIRST VSAPI PATTERN DATE: 14 Dec 2011
VSAPI OPR PATTERN File: 8.643.00
VSAPI OPR PATTERN Date: 14 Dec 2011

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.IUR. 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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