Analysis by: Rika Joi Gregorio
ALIASES:

Exploit:JS/ShellCode.BG(Microsoft)

 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: No

  • In the wild: Yes

  OVERVIEW

This Trojan may arrive bundled with malware packages as a malware component. It may be hosted on a website and run when a user accesses the said website.

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

  TECHNICAL DETAILS

File Size: 2,363 bytes
File Type: JS
Memory Resident: No
Initial Samples Received Date: 28 Mar 2014

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

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

Other Details

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

NOTES:

It passes the following parameters:

  • Parameter name: source
  • Value: include/0ab4c37671698076085e46527f116217.eot
  • Parameter name: initParams
  • Value: exteeec='+'aHR0cDovLzdtZTI4dHEzMTExOHA2aHE2MXVrN25tLmZtLmdlbi50ci9jb2RleC9hZG1pbi9pbmNsdWRlLzNkNGI2ZDhiY2ZmYmE5Yzc2ZWEzMTYwZjEzYmQ0MTcyLmVvdA==

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

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 10.692.03
FIRST VSAPI PATTERN DATE: 28 Mar 2014
VSAPI OPR PATTERN File: 10.693.00
VSAPI OPR PATTERN Date: 29 Mar 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 to delete files detected as JS_EXPLOIT.SVL. 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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