Analysis by: Sabrina Lei Sioting
 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 arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

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

  TECHNICAL DETAILS

File Size: 64,000 bytes
File Type: DOC
Memory Resident: No
Initial Samples Received Date: 18 Oct 2010

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other System Modifications

This Trojan adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\Microsoft\
Office\{Microsoft Word version}\word\
Security
AccessVBOM = "1"

Download Routine

This Trojan downloads the file from the following URL and renames the file when stored in the affected system:

  • http://{BLOCKED}83.219/gb05.zip - saved as %System Root%\Documments and Settings\All Users\Application Data\IEXPLORE.EXE

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}.89.54/
  • http://{BLOCKED}.24.159/AWS96.jsp?8JZjnZ62=4Kd2aZw2ojM8LzMY5DM8BZMyON314NmyaQrSBdA

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