Analysis by: Jennifer Gumban
ALIASES:

Trojan:JS/Redirector.MM (Microsoft)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

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

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: 9,501 bytes
File Type: Java
Memory Resident: No
Initial Samples Received Date: 08 Oct 2013
Payload: Connects to URLs/IPs

Arrival Details

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

Other Details

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

NOTES:

This malware checks if browser has the following details:

  • name is Microsoft Internet Explorer
  • version is MSIE 8
  • user agent is Windows NT 5.1

The URL it redirects to is http://{BLOCKED}.{BLOCKED}.31.154/mii/guy2.html, where the HTML file guy2.html is. The said file is detected as HTML_SHELLCD.XPL.

  SOLUTION

Minimum Scan Engine: 9.300
FIRST VSAPI PATTERN FILE: 10.328.08
FIRST VSAPI PATTERN DATE: 08 Oct 2013
VSAPI OPR PATTERN File: 10.329.00
VSAPI OPR PATTERN Date: 09 Oct 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as JS_REDIR.XPL. 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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