Analysis by: Abraham Latimer Camba
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  TECHNICAL DETAILS

NOTES:

This is the Trend Micro detection for Web pages that were compromised through the insertion of a certain malicious script.

The script checks for the affected system's Web Browser and its version. It then generates a random string based on the version. The random string in appended to the URL http://{BLOCKED}z.cn/vid/?id=.

As a result, the appended URL appears as http://[BLOCKED}z.cn/vid/?id={Generated string}.

It then connects to the generated URL to possibly download other malicious files.

  SOLUTION

Minimum Scan Engine: 9.750

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 clean files detected as JS_GUMBLAR.BHAM. 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.


Did this description help? Tell us how we did.