Analysis by: Michael Cabel
 Modified by: Christopher Daniel So
ALIASES:

Trojan:JS/BlacoleRef.W (Microsoft), Trojan.Webkit!html (Symantec), JS/Blacole-Redirect.j (McAfee), Trojan.JS.Agent.bxw (Kaspersky)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Via email

This Trojan may also arrive as a script embedded in the message of an email.

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

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: 10,074 bytes
File Type: HTML, HTM
Initial Samples Received Date: 07 Apr 2012
Payload: Connects to URLs/IPs

Arrival Details

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

Other Details

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

  • http://{BLOCKED}.{BLOCKED}.250.173:8080/navigator/jueoaritjuir.php
  • http://{BLOCKED}.{BLOCKED}.27.129:8080/navigator/jueoaritjuir.php
  • http://{BLOCKED}.{BLOCKED}.194.138:8080/navigator/jueoaritjuir.php
  • http://{BLOCKED}.{BLOCKED}.233.242:8080/navigator/jueoaritjuir.php

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

NOTES:

This Trojan may also arrive as a script embedded in the message of an email.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.890.06
FIRST VSAPI PATTERN DATE: 07 Apr 2012
VSAPI OPR PATTERN File: 8.891.00
VSAPI OPR PATTERN Date: 07 Apr 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

Scan your computer with your Trend Micro product to delete files detected as JS_PHOEX.JDR. 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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