Analysis by: Nikko Tamana
ALIASES:

Exploit-Rekit!JNLP (NAI)

 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: No

  • In the wild: Yes

  OVERVIEW

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

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size: 460 bytes
File Type: XML
Memory Resident: Yes
Initial Samples Received Date: 11 Jun 2013

Arrival Details

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

Other Details

This Trojan requires its main component to successfully perform its intended routine.

NOTES:

It passes the following parameters:

  • Parameter Name: __applet_ssv_validated
    Value: true
  • Parameter Name: name
    Value: 5--hg88xirixlzrz2w&68bk25-6f">
  • Parameter Name: jnlp_href
    Value: gj.jnlp

It loads the any of the following .jar files when accessed:

  • r4.jar
  • wf.jar
  • tb.jar

  SOLUTION

Minimum Scan Engine: 9.300
FIRST VSAPI PATTERN FILE: 9.974.04
FIRST VSAPI PATTERN DATE: 11 Jun 2013
VSAPI OPR PATTERN File: 9.975.00
VSAPI OPR PATTERN Date: 12 Jun 2013

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 HTML_EXPLCVE.AK. 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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