Analysis by: Erika Bianca Mendoza
 PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

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

  TECHNICAL DETAILS

File Size: 4,601 bytes
File Type: PDF
Memory Resident: No
Initial Samples Received Date: 25 May 2010
Payload: Downloads files

Arrival Details

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

Download Routine

This Trojan takes advantage of the following software vulnerabilities to download possibly malicious files:

  • Adobe Multiple Products PDF JavaScript Method Buffer Overflow
  • Adobe Reader And Acrobat util.printf Stack Buffer Overflow
  • Adobe Reader and Acrobat 'newplayer()' JavaScript Method Remote Code Execution Vulnerability
  • Adobe Acrobat and Reader Collab 'getIcon()' JavaScript Method Remote Code Execution Vulnerability

After successfully exploiting the said vulnerability, this malware connects to the following URLs to possibly download other malicious files:

  • http://{BLOCKED}duce.ru:8080/main.php?id=6&h=314

  SOLUTION

Minimum Scan Engine: 8.900
FIRST VSAPI PATTERN FILE: 7.164.06
FIRST VSAPI PATTERN DATE: 13 May 2010
VSAPI OPR PATTERN File: 7.165.00
VSAPI OPR PATTERN Date: 14 May 2010

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

Scan your computer with your Trend Micro product to delete files detected as JS_UTOTI.KK. 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.

Step 3

Download and apply these security patches Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.


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