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

  TECHNICAL DETAILS

File Size: 9,490 bytes
File Type: VBS
Initial Samples Received Date: 04 Feb 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.

Installation

This Trojan drops the following copies of itself into the affected system:

  • {Wallpaper path and file name without extension}.htm

Other System Modifications

This Trojan modifies the following registry key(s)/entry(ies) as part of its installation routine:

HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = "{Wallpaper file path and name without extension}.htm"

(Note: The default value data of the said registry entry is {Wallpaper file path and name}.)

It adds the following registry keys as part of its installation routine:

HKEY_CURRENT_USER\Software\Help