Analysis by: Cris Nowell Pantanilla
 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

Infection Channel: Downloaded from the Internet

This is the Trend Micro detection for Java files used as a component of another malware.

It is used to download files. It executes the downloaded file. As a result, malicious routines of the downloaded file is exhibited 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: 4,595 bytes
File Type: Java Class
Initial Samples Received Date: 06 May 2011
Payload: Downloads files

Arrival Details

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

NOTES:

This is the Trend Micro detection for Java files used as a component of another malware.

This malware is used to download files. It contains a URL where a possible malicious file is passed to it as a parameter. It saves the the downloaded file in the Temporary folder as {random numbers}.tmp.

It executes the downloaded file. As a result, malicious routines of the downloaded file is exhibited on the affected system.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.140.14
FIRST VSAPI PATTERN DATE: 06 May 2011
VSAPI OPR PATTERN File: 8.141.00
VSAPI OPR PATTERN Date: 07 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

Scan your computer with your Trend Micro product to delete files detected as JAVA_DLOADER.GEG. 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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