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JAVA_KRYPT.WGH

October 09, 2012
 Analysis by: MarfelTi
 Modified by: Christopher Daniel So
 ALIASES:

Troj/JavaDl-BT (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


It takes advantage of unknown vulnerabilities in Java Runtime Environment. It requires its main component to successfully perform its intended routine.

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

  TECHNICAL DETAILS

File Size:

3,699 bytes

File Type:

Java Class

Memory Resident:

No

Initial Samples Received Date:

17 May 2011

Arrival Details

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

NOTES:
It takes advantage of unknown vulnerabilities in Java Runtime Environment. It requires its main component to successfully perform its intended routine.

  SOLUTION

Minimum Scan Engine:

8.900

FIRST VSAPI PATTERN FILE:

8.162.02

FIRST VSAPI PATTERN DATE:

17 May 2011

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_KRYPT.WGH. 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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