Analysis by: Marfel Tiamzon
ALIASES:

Microsoft: Trojan:JS/Iframe.P; Kaspersky: Trojan-Clicker.JS.Iframe.db; Sophos: Troj/Iframe-DL

 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

This Trojan may be unknowingly downloaded by a user while visiting malicious websites. It may be hosted on a website and run when a user accesses the said website.

  TECHNICAL DETAILS

File Size: 386 bytes
File Type: HTML, HTM
Initial Samples Received Date: 23 Mar 2011

Arrival Details

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

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

NOTES:
This is Trend Micro's detection for infected HTML files that contain hidden iframe tags to redirect the user to a malicious URL. In this sample the following URLs are accessed:

  • http://{BLOCKED}serbar-com.samsung.com.nasa-gov.egreatsale.ru:8080/index.php?js

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 7.920.14
FIRST VSAPI PATTERN DATE: 23 Mar 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 JS_IFRAME.SMDG. 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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