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JS_BLACOLE.HBA

October 09, 2012
 Analysis by: Sabrina Lei Sioting
 ALIASES:

Exploit:JS/Blacole.CV [Microsoft]

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet


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. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

30,716 bytes

File Type:

JS

Memory Resident:

No

Initial Samples Received Date:

16 Mar 2012

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}.in/images/7f78a95a077fd32244aa65dc08024e2a.pdf

However, as of this writing, the said sites are inaccessible.

NOTES:

It downloads and loads the following Java applet:

  • http://{BLOCKED}.in/images/r/7b8247ba0f82b0592a3b1ce58d98347d.jar

However, the said Java applet is inaccessible.

  SOLUTION

Minimum Scan Engine:

9.200

VSAPI OPR PATTERN File:

8.841.00

VSAPI OPR PATTERN Date:

16 Mar 2012

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as JS_BLACOLE.HBA. 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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