Analysis by: Michael Cabel
 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

This Trojan takes advantage of software vulnerabilities to allow a remote user or malware/grayware/spyware to download files. It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

  TECHNICAL DETAILS

File Size: 46,598 bytes
File Type: PDF
Memory Resident: No
Initial Samples Received Date: 26 Nov 2010

Download Routine

This Trojan takes advantage of the following software vulnerabilities to allow a remote user or malware/grayware/spyware to download files:

  • Stack-based buffer overflow in CoolType.dll in Adobe Reader and Acrobat

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

Other Details

More information on this vulnerability can be found below:

  SOLUTION

Minimum Scan Engine: 8.900

Step 1

For Windows ME and XP 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 TROJ_COOLTYPE.E 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.

NOTES:


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