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Virus Profile: BackDoor-EXI.gen.e!D73E38F84762

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 1/29/2013
Date Added: 1/29/2013
Origin: Unknown
Length: 137728
Type: Trojan
Subtype: Remote Access
DAT Required: 6969
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 DetectionBackDoor-EXI.gen.e
Length137728 bytes
MD5d73e38f84762efa102add694cb564e00
SHA1a431b3607a46618900d84c68028bc0825d9f0c58


Other Common Detection Aliases

Company NamesDetection Names
avastWin32:Cybota
AVG (GriSoft)Agent.5.BR (Trojan horse)
aviraTR/Crypt.XPACK.Gen
KasperskyBackdoor.Win32.Gbot.yg
BitDefenderGen:Trojan.Heur.KS.1
Dr.WebTrojan.DownLoader1.48872
FortiNetW32/FraudLoad.MK!tr
MicrosoftBackdoor:Win32/Cycbot.G
SymantecBackdoor.Cycbot!gen2
EsetWin32/Kryptik.JFG trojan (variant)
normanW32/Cycbot.BJB
pandaTrj/Cycbot.gen
SophosMal/FakeAV-IS
Trend MicroBKDR_CYCBOT.SMIB
vba32TrojanDownloader.FraudLoad.hix
V-BusterTrojan.Cycbot.Gen!Pac (mutant)
Vet (Computer Associates)Win32/FakeSpypro.B!generic

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


ActivitiesRisk Levels
Attempts to connect to a high risk domain that may pose a security risk.High
Modifies winlogon configuration settings in registryMedium
Adds or modifies winlogon shell registry value. Could be used to launch a program on startup.Medium
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 BetaBackDoor-EXI.gen.e
McAfee SupportedBackDoor-EXI.gen.e



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:

A431B3607A46618900D84C68028BC0825D9F0C58

The following files have been added to the system:

  • %APPDATA%\4F6A.26D
  • %APPDATA%\dwm.exe

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\SHELL = explorer.exe,%APPDATA%\dwm.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INTERNET SETTINGS\PROXYSERVER = http=127.0.0.1:62667

The applications attempted the following network connection(s):

  • 50.117.116.***:80
  • hxxp://historykillerpro.com/img/*****

   

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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