JS_OBFUSCAT.SMD

October 08, 2012
 Analysis by: Christopher Daniel So
 ALIASES:

VirTool:JS/Obfuscator.V (Microsoft), Trojan.Malscript!html (Symantec), JS/Redirector.v (McAfee), JS.Crypt.2 (DrWeb), JS.Agent-84 (ClamAV), JS/Obfuscated (AVG)

 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

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

It inserts an IFRAME tag that redirects users to certain URLs.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

Script

Memory Resident:

No

Initial Samples Received Date:

17 Sep 2010

Arrival Details

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

Other Details

This Trojan inserts an IFRAME tag that redirects users to the following URLs:

  • http://{BLOCKED}others.com/articles/styles.php?s=uXKc3WOX3&id={random number}

It does the following:

  • It loads and executes the applet from http://{BLOCKED}others.com/articles/styles.php?s=uXKc3WOX3&id=6.

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.610.01

VSAPI PATTERN Date:

10 Nov 2010

VSAPI PATTERN Date:

11/10/2010 12:00:00 AM

FIRST VSAPI PATTERN FILE:

7.470.05

FIRST VSAPI PATTERN DATE:

18 Sep 2010

NOTES:

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