Analysis by: Rhena Inocencio
ALIASES:

Exploit:Java/CVE-2012-0507.CF (Microsoft), JV/Exploit-Blacole.o !! (McAfee), Java/Exploit.CVE-2012-0507.BZ trojan (ESET), Troj/JavaDl-FC (Sophos)

 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 description is based on compiled analysis of several variants of JAVA_BLACOLE.

This is a Java class file that is used to execute an exploit code. Once successful, it may download a possibly malicious file from a certain URL.

This Trojan may arrive bundled with malware packages as a malware component. It may be hosted on a website and run when a user accesses the said website.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size: Varies
File Type: Java Class

Arrival Details

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

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

Other Details

This Trojan requires its main component to successfully perform its intended routine.

NOTES:

This description is based on compiled analysis of several variants of JAVA_BLACOLE.

This is a Java class file that is used to execute an exploit code. Once successful, it may download a possibly malicious file from a certain URL.

The URL where this malware downloads the said file depends on the parameter passed on to it by its components.

The downloaded file is commonly saved as follows:

  • %User Temp%\{random file name}.exe

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

  SOLUTION

Minimum Scan Engine: 9.200

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. 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.


Did this description help? Tell us how we did.