Analysis by: Karl Dominguez
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It may be unknowingly downloaded by a user while visiting malicious websites.

As of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size: 33,173 bytes
File Type: PDF
Initial Samples Received Date: 15 Apr 2011
Payload: Downloads files

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It may be unknowingly downloaded by a user while visiting malicious websites.

Download Routine

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

  • CVE-2010-2883

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

  • http://{BLOCKED}z.cc/j/l.php?x=27

As of this writing, the said sites are inaccessible.

Other Details

For more information on the aforementioned vulnerabilities, please see the following pages:

  SOLUTION

Minimum Scan Engine: 8.900

Step 2

Scan your computer with your Trend Micro product to delete files detected as TROJ_PIDIEF.OR. 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 this security patch Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.  APSB10-21


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