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Virus Profile: Generic Dropper!1s3!D6383AB87707

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 6/8/2012
Date Added: 6/8/2012
Origin: Unknown
Length: 406016
Type: Trojan
Subtype: -
DAT Required: 6736
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 DetectionGeneric Dropper!1s3
Length406016 bytes
MD5d6383ab8770738aaf08e5aca7fa137a8
SHA1d8f8bfefdb61f6537cb7103432868cb2c09d2a6d


Other Common Detection Aliases

Company NamesDetection Names
ahnlabTrojan/Win32.Llac
avastMSIL:Kryptik-S
AVG (GriSoft)Dropper.Generic6.OMQ
aviraTR/Dropper.Gen
KasperskyTrojan.Win32.Jorik.Llac.dsr
BitDefenderTrojan.Generic.KDV.630269
Dr.WebWin32.HLLW.Autoruner.9222
FortiNetW32/Jorik_Llac.DSR!tr
Microsoftbackdoor:win32/fynloski.a
EsetMSIL/Injector.AT trojan (variant)
normanW32/Suspicious_Gen4.AGXIA
vba32TrojanDropper.Demp.fjp

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


ActivitiesRisk Levels
Adds or modifies system policies. Could be used to prevent the or detour the use of common system tools.High
Attempts to write to a memory location of a previously loaded process.Medium
Modifies Windows firewall settings.Medium
Adds or modifies winlogon userinit registry value. Could be used to launch a program on startup.Medium
Modifies winlogon configuration settings in registryMedium
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 BetaGeneric Dropper!1s3
McAfee SupportedGeneric Dropper!1s3



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:

d8f8bfefdb61f6537cb7[private subnet]cb2c09d2a6d

The following files have been added to the system:

  • %ALLUSERSPROFILE%\Start Menu\MSDCSC\msdcsc.exe
The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\DC3_FEXEC\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\
The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\ENABLELUA = 0
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\MICROUPDATE = %ALLUSERSPROFILE%\Start Menu\MSDCSC\msdcsc.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\USERINIT = %WINDIR%\SYSTEM32\userinit.exe,%ALLUSERSPROFILE%\Start Menu\MSDCSC\msdcsc.exe
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\SHAREDACCESS\PARAMETERS\FIREWALLPOLICY\STANDARDPROFILE\DISABLENOTIFICATIONS = 0
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\SHAREDACCESS\PARAMETERS\FIREWALLPOLICY\STANDARDPROFILE\ENABLEFIREWALL = 0
The applications attempted the following network connection(s):

  • 188.227.232.***:81
   

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.