Virus Profile: RDN/Generic Dropper!kb!333D0C2D680F

Threat Search
Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 5/11/2013
Date Added: 5/11/2013
Origin: Unknown
Length: 55808
Type: Trojan
Subtype: -
DAT Required: 7071
Removal Instructions


This is a Trojan detection. Unlike viruses, Trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Indication of Infection

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Methods of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.


Virus Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Generic Dropper!kb
Length55808 bytes

Other Common Detection Aliases

Company NamesDetection Names
AVG (GriSoft)DDoS.AC (Trojan horse)
pandaGeneric Malware
V-BusterTrojan.ServStart!hKFIEWPb7Uk (trojan)

Other brands and names may be claimed as the property of others.

ActivitiesRisk Levels
Attempts to write file to shared locations.Low
Enumerates many system files and directories.Low
No digital signature is presentInformational

McAfee ScansScan Detections
McAfee BetaRDN/Generic Dropper!kb
McAfee SupportedRDN/Generic Dropper!kb

System Changes

Some path values have been replaced with environment variables as the exact location may vary with different configurations.
%WINDIR% = \WINDOWS (Windows 9x/ME/XP/Vista/7), \WINNT (Windows NT/2000)
%PROGRAMFILES% = \Program Files

The following files were analyzed:


The following files have been added to the system:

  • %PROGRAMFILES%\Windows Media Player\lpk.dll
  • %WINDIR%\Microsoft.NET\Framework\lpk.dll
  • %PROGRAMFILES%\Outlook Express\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\web server extensions\40\bin\lpk.dll
  • %ALLUSERSPROFILE%\Application Data\Adobe\Reader\9.2\ARM\ARM Update\lpk.dll
  • %WINDIR%\$MSI31Uninstall_KB893803v2$\lpk.dll
  • %WINDIR%\assembly\NativeImages_v2.0.50727_32\dfsvc\c81e85b756fb5d48a2bd385e9631b355\lpk.dll
  • %PROGRAMFILES%\MSN\MSNCoreFiles\Setup\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\OFFICE11\lpk.dll
  • %PROGRAMFILES%\Windows NT\Pinball\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\Web Components\11\lpk.dll
  • %PROGRAMFILES%\Windows NT\Accessories\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\Speech\lpk.dll
  • %PROGRAMFILES%\MSN\MSNCoreFiles\lpk.dll
  • %COMMONPROGRAMFILES%\Adobe\Updater6\lpk.dll
  • %PROGRAMFILES%\microsoft frontpage\version3.0\bin\lpk.dll
  • %WINDIR%\$MSI31Uninstall_KB893803v2$\spuninst\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\web server extensions\40\_vti_bin\lpk.dll
  • %WINDIR%\Help\Tours\mmTour\lpk.dll
  • %PROGRAMFILES%\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-[private subnet]-A92000000001}\lpk.dll
  • %PROGRAMFILES%\Internet Explorer\Connection Wizard\lpk.dll
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\Microsoft .NET Framework 2.0\lpk.dll
  • %COMMONPROGRAMFILES%\Adobe\ARM\1.0\lpk.dll
  • %PROGRAMFILES%\Messenger\lpk.dll
  • %PROGRAMFILES%\MSN Gaming Zone\Windows\lpk.dll
  • %WINDIR%\lpk.dll
  • %PROGRAMFILES%\Microsoft Office\OFFICE11\1033\lpk.dll
  • %WINDIR%\inf\lpk.dll
  • %PROGRAMFILES%\Adobe\Reader 9.0\Reader\lpk.dll
  • %PROGRAMFILES%\WinRAR\lpk.dll
  • %WINDIR%\Installer\{350C97B0-3D7C-4EE8-BAA9-00BCB3D54227}\lpk.dll
  • %PROGRAMFILES%\Movie Maker\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\MODI\11.0\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\DW\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\web server extensions\40\_vti_bin\_vti_adm\lpk.dll
  • %PROGRAMFILES%\Microsoft Office\OFFICE11\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\Smart Tag\lpk.dll
  • %WINDIR%\PCHEALTH\HELPCTR\Binaries\lpk.dll
  • %WINDIR%\Installer\{716E0306-8318-4364-8B8F-0CC4E9376BAC}\lpk.dll
  • %ALLUSERSPROFILE%\Application Data\Adobe\Reader\9.2\ARM\lpk.dll
  • %PROGRAMFILES%\NetMeeting\lpk.dll
  • %PROGRAMFILES%\Windows NT\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\Source Engine\lpk.dll
  • %WINDIR%\Installer\{901[private subnet]-11D3-8CFE-0150048383C9}\lpk.dll
  • %PROGRAMFILES%\Internet Explorer\lpk.dll
  • %WINDIR%\Microsoft.NET\Framework\v1.1.4322\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\web server extensions\40\isapi\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\MSInfo\lpk.dll
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\lpk.dll
  • C:\lpk.dll
  • %WINDIR%\ehome\lpk.dll
  • %COMMONPROGRAMFILES%\Microsoft Shared\web server extensions\40\_vti_bin\_vti_aut\lpk.dll
  • %WINDIR%\msagent\lpk.dll

The following files were temporarily written to disk then later removed:

  • %WINDIR%\SYSTEM32\gei33.dll

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\ASPNET_STATES\DESCRIPTION = Provides support for out-of-to-process

The applications attempted the following network connection(s):

  • 147.255.229.**:4455


All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

2.Update to current engine and DAT files for detection and removal.

3.Run a complete system scan.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.

On Windows Vista and 7:

Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.


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