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JS_DLOAD.SMHL

October 09, 2012
 Analysis by: Roland Marco Dela Paz
 ALIASES:

Troj/Iframe-HJ (Sophos)

 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:

Via email


This Trojan displays a page that prompts users to click two hyperlinks in its body.

This Trojan arrives as attachment to mass-mailed email messages.

This is the Trend Micro detection for files that exhibit certain behaviors.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

HTML, HTM

Initial Samples Received Date:

05 Mar 2012

Payload:

Connects to URLs/IPs

Arrival Details

This Trojan arrives as attachment to mass-mailed email messages.

Other Details

This is the Trend Micro detection for:

  • malicious HTML files that disguises itself as a UPS invoice.

NOTES:

It displays the following page, prompting the user to click two hyperlinks in its body:

The two links are as follows:

  • http://{BLOCKED}-ups.com/main.php?page=03def465fa1423ac - leads to a Blackhole Exploit Kit site that downloads TSPY_ZBOT.VVL
  • http://{BLOCKED}k.{BLOCKED}p-ups.com/invoiceA1423AC.JPG.exe - detected as TSPY_ZBOT.VVL

It also contains a hidden iframe that points to the same Blackhole Exploit Kit site:

  • http://{BLOCKED}-ups.com/main.php?page=03def465fa1423ac

As a result, malicious routines of TSPY_ZBOT.VVL are also exhibited on the affected system.

  SOLUTION

Minimum Scan Engine:

9.200

VSAPI OPR PATTERN File:

8.821.00

VSAPI OPR PATTERN Date:

07 Mar 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

Remove malware files dropped/downloaded by JS_DLOAD.SMHL

Step 3

Close all opened browser windows

Step 4

Scan your computer with your Trend Micro product to delete files detected as JS_DLOAD.SMHL. 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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