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JAVA_OBFUS.WY

October 09, 2012
 Analysis by: Michael Cabel
 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


This Trojan takes advantage of a vulnerability in Java Runtime Environment (JRE) component to allow a remote user execute an arbitrary code, thus, compromising system's security.

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

Varies

Memory Resident:

No

Initial Samples Received Date:

20 Jan 2012

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

NOTES:
This Trojan takes advantage of a vulnerability in Java Runtime Environment (JRE) component to allow a remote user execute an arbitrary code, thus, compromising system's security.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.720.04

FIRST VSAPI PATTERN DATE:

20 Jan 2012

VSAPI OPR PATTERN File:

8.721.00

VSAPI OPR PATTERN Date:

20 Jan 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 JAVA_OBFUS.WY. 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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