Analysis by: Roland Marco Dela Paz
 Modified by: Rhena Inocencio
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This adware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be manually installed by a user.

  TECHNICAL DETAILS

File Size: 2,326,009 bytes
File Type: EXE
Initial Samples Received Date: 04 May 2012

Arrival Details

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

It may be manually installed by a user.

Installation

This adware drops the following files:

  • %Program Files%\TopFind\TopFind.exe
  • %Program Files%\TopFind\TopFindInfo.STR
  • %Program Files%\TopFind\TopFindUninstall.exe
  • %Program Files%\TopFind\TopFindUpdate.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

It creates the following folders:

  • %Program Files%\TopFind

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

Other System Modifications

This adware adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
TopFind
DisplayName = "Window Internet TopFind"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
TopFind
UninstallString = "C:\Program Files\TopFind\TopFindUninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
TopFind
URLInfoAbout = "http://www.topfind.co.kr"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
TopFind
URLUpdateInfo = "http://www.topfind.co.kr"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
TopFind
HelpLink = "http://www.topfind.co.kr"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
TopFind
Comments = "TopFind 1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
TopFind
DisplayVersion = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
TopFind
Publisher = "(ÁÖ)ÇÏÀÌÆÛÀ§Áî"

HKEY_CURRENT_USER\Software\TopFind
Part = "1"

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

HKEY_CURRENT_USER\Software\TopFind

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
TopFind

Other Details

This adware connects to the following possibly malicious URL:

  • admin.{BLOCKED}d.co.kr
  • www.{BLOCKED}d.co.kr