For Consumer

Virus Profile: RDN/Generic BackDoor!145E5FD7DBFA

Threat Search
Print
   
Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 5/9/2013
Date Added: 5/9/2013
Origin: Unknown
Length: 1093632
Type: Trojan
Subtype: -
DAT Required: 7070
Removal Instructions
   
 
 
   

Description

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 BackDoor
Length1093632 bytes
MD5145e5fd7dbfa72ad2777bac70c64de37
SHA1c81fcbec8eee643145c82f19a380b6cd4da34222


Other Common Detection Aliases

Company NamesDetection Names
BitDefenderTrojan.Generic.9046606
Dr.WebBackDoor.Comet.152
Microsoftbackdoor:win32/fynloski.a
Trend MicroTROJ_GEN.R47H1E7

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


ActivitiesRisk Levels
Attempts to load and execute remote code in a previously loaded processMedium
Attempts to write to a memory location of a previously loaded process.Medium
Adds or modifies winlogon userinit registry value. Could be used to launch a program on startup.Medium
Modifies winlogon configuration settings in registryMedium
Adds or modifies winlogon shell registry value. Could be used to launch a program on startup.Medium
Creates one or more shortcuts (.LNK files) to provide user accessible links to start a program usually form the desktop or start menu.Low
Enumerates many system files and directories.Low
Process attempts to call itself recursivelyLow
Adds or modifies Internet Explorer cookiesLow
Attempts to write to a memory location of an unknown processLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaRDN/Generic BackDoor
McAfee SupportedRDN/Generic BackDoor



System Changes

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


The following files were analyzed:

update.exe

The following files have been added to the system:

  • %USERPROFILE%\Start Menu\Programs\Startup\windows.lnk
  • %APPDATA%\MSDCSC\msdcsc.exe

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\DC3_FEXEC\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\SHELL = %APPDATA%\Microsoft\update.exe,explorer.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\FACEBOOK UPDATE = %APPDATA%\Microsoft\update.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\FACEBOOK UPDATE = %APPDATA%\Microsoft\update.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\MICROUPDATE = %APPDATA%\MSDCSC\msdcsc.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\USERINIT = %WINDIR%\SYSTEM32\userinit.exe,%APPDATA%\MSDCSC\msdcsc.exe

The applications attempted the following network connection(s):

  • 88.170.253.***:1604

   

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.