TROJ_PIDIEF.SMNT

This Trojan takes advantage of certain software vulnerabilities to download possibly malicious files.

After successfully exploiting the said vulnerabilities, this malware connects to the certain URLs to possibly download other malicious files on the system.

This Trojan executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system. As of this writing, the said sites are inaccessible.

Arrival Details

This Trojan may be downloaded from the following remote sites:

• http://{BLOCKED}tsetter.com/content/adp1.php?f=129

Download Routine

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

• Adobe Acrobat util.printf Buffer Overflow
• Adobe Acrobat collab.getIcon Buffer Overflow
• Adobe Reader media.newPlayer Exploit
• Adobe Acrobat Collab.collectEmailInfo Buffer Overflow

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

• http://{BLOCKED}tsetter.com/d.php?f=129&e=3

It saves the files it downloads using the following names:

• %User Temp%\wpbt.dll

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

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

As of this writing, the said sites are inaccessible.

Other Details

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

• Adobe Security Bulletin APSB08-13
• Adobe Security Bulletin APSB08-19
• Adobe Security Bulletin APSB09-04
• Adobe Security Advisory APSA09-07

NOTES:
If the URL is still accessible, it downloads a file and executes the following command to run the downloaded file:

• regsvr32 -s wpbt.dll