JAVA_DLOAD.HZP

June 25, 2014
 Analysis by: Rhena Inocencio
 ALIASES:

Trojan.Maljava (Symantec), Downloader-BCS!g (Mcafee), Troj/JavaBz-CA (Sophos)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives as a component bundled with malware/grayware packages. It executes when a user accesses certain websites where it is hosted.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

Java Class

Initial Samples Received Date:

25 Jul 2012

Arrival Details

This Trojan arrives as a component bundled with malware/grayware packages.

It executes when a user accesses certain websites where it is hosted.

NOTES:

It downloads files from the URL specified in the parameter qvctraymemksgsk. It then saves the downloaded file as %User Temp%\{random file name}.exe.

It executes the downloaded file.

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp or C:\WINNT\Temp.)

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.296.03

FIRST VSAPI PATTERN DATE:

31 Jul 2012

VSAPI OPR PATTERN File:

9.297.00

VSAPI OPR PATTERN Date:

01 Aug 2012

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as JAVA_DLOAD.HZP. 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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