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Virus Profile: Generic BackDoor.afz!AFE505938D6D

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 2/12/2013
Date Added: 2/12/2013
Origin: Unknown
Length: 858112
Type: Trojan
Subtype: -
DAT Required: 6984
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 BackDoor.afz
Length858112 bytes
MD5afe505938d6d60dead4d96edf1bd92f5
SHA1c311cdae816a9ff065870cedd37104c832632fc2


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareGen:Variant.Kazy.96504 (B)
ahnlabWin-Trojan/Malpacked6.Gen
AVG (GriSoft)Win32/Cryptor
aviraTR/Dropper.Gen
BitDefenderGen:Variant.Kazy.94410
Dr.WebBackDoor.Slym.1375
FortiNetW32/Kryptik.XUW!tr
MicrosoftBackdoor:Win32/Kelihos.F
Eseta variant of Win32/Kryptik.ARNE

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


ActivitiesRisk Levels
Adds or modifies a system service.Low
Enumerates many system files and directories.Low
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric BackDoor.afz
McAfee SupportedGeneric BackDoor.afz



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:

C311CDAE816A9FF065870CEDD37104C832632FC2

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\wpcap.dll
  • %WINDIR%\SYSTEM32\drivers\npf.sys
  • %WINDIR%\SYSTEM32\packet.dll

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

  • %TEMP%\tmp.exe

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\SYSINTERNALS\PROCESS EXPLORER\FLAGSLOCALIZEDHIDE = 80
  • HKEY_CURRENT_USER\SOFTWARE\SYSINTERNALS\PROCESS EXPLORER\HIDENOTIFYVALUE = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\SYSINTERNALS\PROCESS EXPLORER\LANGUAGELOADEDUSE
  • HKEY_CURRENT_USER\SOFTWARE\SYSINTERNALS\PROCESS EXPLORER\LINENOTIFYDEFAULT = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\SYSINTERNALS\PROCESS EXPLORER\WIDTHUPDATEDHIDE = DBkXTI1ReCV6Pk3vnpPHfikPu2yK5X1guo7xOdHJATTOtuxP4PKG0yG1hiSPFC2WLA==
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\SONYAGENT = %TEMP%\C311CDAE816A9FF065870CEDD37104C832632FC2

The applications attempted the following network connection(s):

  • 87.1[private subnet]
  • hxxp://46.119.168.2/*****
  • 2.133.228.**:80
  • 68.54.180.**:80
  • 98.150.119.**:80
  • 174.134.77.**:80
  • 124.62.249.**:80
  • 60.249.185.**:80
  • 37.193.174.**:80
  • 219.70.207.**:80
  • 178.168.11.**:80
  • 14.99.153.**:80
  • 41.86.172.**:80
  • 81.198.26.**:80
  • 77.122.150.**:80
  • 121.21.53.**:80
  • 223.165.2.**:80
  • 41.67.42.**:80
  • 49.238.53.**:80
  • 75.135.80.**:80
  • 119.198.175.**:80
  • 62.84.251.*:80

   

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.