Analysis by: Jennifer Gumban
 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:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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

It takes advantage of an unknown vulnerability in a certain software to allow a remote malicious user or malware to download files on the affected machine.

  TECHNICAL DETAILS

File Size: 18,067 bytes
File Type: JAR
Memory Resident: No
Initial Samples Received Date: 16 Jan 2014

Arrival Details

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

Download Routine

This Trojan saves the files it downloads using the following names:

  • %TEMP%\{random value}

It downloads a possibly malicious file from a certain URL. The URL where this malware downloads the said file depends on the parameter passed on to it by its components.

Other Details

This Trojan takes advantage of an unknown vulnerability in a certain software to allow a remote malicious user or malware to download files on the affected machine.

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 10.550.06
FIRST VSAPI PATTERN DATE: 20 Jan 2014
VSAPI OPR PATTERN File: 10.551.00
VSAPI OPR PATTERN Date: 21 Jan 2014

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 and note files detected as JAVA_EXPLOYT.BUN

Step 4

Search and delete these files

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.  
  • %TEMP%\{random value}

Step 5

Scan your computer with your Trend Micro product to delete files detected as JAVA_EXPLOYT.BUN. 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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