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JS_EXPLOIT.NT

October 09, 2012
 Analysis by: Cris Nowell Pantanilla
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


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

This is the Trend Micro detection for files that contain malicious IFRAME tags.

  TECHNICAL DETAILS

File Size:

1,535 bytes

File Type:

JS

Memory Resident:

No

Initial Samples Received Date:

14 Dec 2011

Arrival Details

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

Other Details

This is the Trend Micro detection for files that contain malicious IFRAME tags.

It connects to the following possibly malicious URL:

  • http://{BLOCKED}zazbzbfe.{BLOCKED}s.iframecounter.ru/?s=1

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.644.04

FIRST VSAPI PATTERN DATE:

14 Dec 2011

VSAPI OPR PATTERN File:

8.645.00

VSAPI OPR PATTERN Date:

15 Dec 2011

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_EXPLOIT.NT. 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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