Analysis by: Anthony Joe Melgarejo
ALIASES:

Trojan.Maljava (Symantec), Exploit-Blacole (McAfee), Java/Exploit.CVE-2012-0507.CY trojan (NOD32)

 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 is used as a component of other malware. It exploits a vulnerability in several versions of Oracle Java Runtime Environment (JRE) component. It allows this Trojan to execute arbitrary codes on the affected system.

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

  TECHNICAL DETAILS

File Size: 66,521 bytes
File Type: Java Class
Initial Samples Received Date: 14 Jul 2012

Arrival Details

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

NOTES:

This is used as a component of other malware. It exploits a vulnerability in the following:

  • Java Runtime Environment (JRE) component in Oracle Java SE JDK
  • Java Runtime Environment (JRE) component in Oracle Java SE 7
  • Java Runtime Environment (JRE) component in Oracle Java SE 6 Update 27 and earlier

It allows this Trojan to execute arbitrary codes on the affected system.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 9.392.03
FIRST VSAPI PATTERN DATE: 13 Sep 2012
VSAPI OPR PATTERN File: 9.393.00
VSAPI OPR PATTERN Date: 14 Sep 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_EXPLOIT.RHP. 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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