Analysis by: Christopher Daniel So
ALIASES:

Exploit:Java/Blacole.GD (Microsoft), JS/Exploit-Blacole (McAfee), Exploit.Java.CVE-2012-0507.nk (Kaspersky)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan may arrive bundled with malware packages as a malware component. It executes when a user accesses certain websites where it is hosted.

  TECHNICAL DETAILS

File Size: Varies
File Type: Java Class
Initial Samples Received Date: 19 Jul 2012

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

It executes when a user accesses certain websites where it is hosted.

NOTES:

This Trojan downloads from the URL specified in the parameter sw, and saves the downloaded file as %User Temp%\{random file name}. It then executes the downloaded file.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 9.268.07
FIRST VSAPI PATTERN DATE: 19 Jul 2012
VSAPI OPR PATTERN File: 9.269.00
VSAPI OPR PATTERN Date: 19 Jul 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

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as JAVA_BLACOLE.BNT. 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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