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Virus Profile: BackDoor-ASB.gen!EB2B3C6AF9E1

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 11/15/2012
Date Added: 11/15/2012
Origin: Unknown
Length: 178748
Type: Trojan
Subtype: Remote Access
DAT Required: 6896
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-ASB.gen
Length178748 bytes
MD5eb2b3c6af9e19b32a3b30a32be7f2b08
SHA1b115d57249c7c165c0c8fb95327a1ca3a6f2a000


Other Common Detection Aliases

Company NamesDetection Names
ahnlabWin-Trojan/Ciadoor.177664
AVG (GriSoft)BackDoor.Ciadoor.3.BQ
KasperskyBackdoor.Win32.Ciadoor.cfu
BitDefenderDeepScan:Generic.Malware.SLMDBCbg.F6101AE7
clamavTrojan.Ciadoor.13.C
Dr.WebTrojan.KeyLogger.88
F-ProtW32/Backdoor.OND
FortiNetW32/Ciadoor.V13!tr.bdr
MicrosoftVirTool:Win32/VB.L
SymantecBackdoor.Ciadoor
EsetWin32/Ciadoor.13
normanCiadoor.gen2.gen
pandaBck/Ciadoor.FQ
risingBackdoor.Ciadoor.13
SophosTroj/Ciadoor-K
Trend MicroBKDR_CIADOOR.S
vba32OScope.Backdoor.VB
V-BusterBackdoor.Ciadoor.AH (trojan)

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


ActivitiesRisk Levels
Attempts to launch an instance of the Windows file system explorer.Low
Enumerates many system files and directories.Low
Adds or modifies Internet Explorer browser helper objects.Low
Adds or modifies a COM object.Low
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaBackDoor-ASB.gen
McAfee SupportedBackDoor-ASB.gen



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:

scvhost.exe

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\ckl009.dat
  • %WINDIR%\SYSTEM32\wsock32.sys
  • %WINDIR%\SYSTEM32\4V237V9NqW.ini
  • %TEMP%\b115d57249c7c165c0c8fb95327a1ca3a6f2a000

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\TOOLBAR\EXPLORER\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINDOWS\RUN\
  • HKEY_CURRENT_USER\SOFTWARE\VB AND VBA PROGRAM SETTINGS\
  • HKEY_CURRENT_USER\SOFTWARE\VB AND VBA PROGRAM SETTINGS\SET\
  • HKEY_CURRENT_USER\SOFTWARE\VB AND VBA PROGRAM SETTINGS\SET\SET\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{E14DCE67-8FB7-4721-8149-179BAA4D792C}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{E14DCE67-8FB7-4721-8149-179BAA4D792C}\INPROCSERVER32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{E14DCE67-8FB7-4721-8149-179BAA4D792C}\PROGID\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{E14DCE67-8FB7-4721-8149-179BAA4D792C}\TYPELIB\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{E14DCE67-8FB7-4721-8149-179BAA4D792C}\VERSION\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{0958C4C9-77B0-4AA8-9364-7886BFCA7E39}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{0958C4C9-77B0-4AA8-9364-7886BFCA7E39}\PROXYSTUBCLSID\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{0958C4C9-77B0-4AA8-9364-7886BFCA7E39}\PROXYSTUBCLSID32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{0958C4C9-77B0-4AA8-9364-7886BFCA7E39}\TYPELIB\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\N.CS4\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\N.CS4\CLSID\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{C9F1C5A0-F3D8-48E2-8B8C-3E86B4CAC7E3}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{C9F1C5A0-F3D8-48E2-8B8C-3E86B4CAC7E3}\3.0\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{C9F1C5A0-F3D8-48E2-8B8C-3E86B4CAC7E3}\3.0\0\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{C9F1C5A0-F3D8-48E2-8B8C-3E86B4CAC7E3}\3.0\0\WIN32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{C9F1C5A0-F3D8-48E2-8B8C-3E86B4CAC7E3}\3.0\FLAGS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{C9F1C5A0-F3D8-48E2-8B8C-3E86B4CAC7E3}\3.0\HELPDIR\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{E14DCE67-8FB7-4721-8149-179BAA4D792C}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\TOOLBAR\LOCKED = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\TOOLBAR\EXPLORER\ITBARLAYOUT = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINDOWS\LOAD = %WINDIR%\SYSTEM32\scvhost.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINDOWS\RUN = %WINDIR%\SYSTEM32\scvhost.exe
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINDOWS\RUN\GENERIC HOST PROCESS = %WINDIR%\SYSTEM32\scvhost.exe
  • HKEY_CURRENT_USER\SOFTWARE\VB AND VBA PROGRAM SETTINGS\SET\SET\SET = 4V237V9NqW.ini
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{E14DCE67-8FB7-4721-8149-179BAA4D792C}\INPROCSERVER32\THREADINGMODEL = Apartment
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{0958C4C9-77B0-4AA8-9364-7886BFCA7E39}\TYPELIB\VERSION = 3.0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\GENERIC HOST PROCESS = %WINDIR%\SYSTEM32\scvhost.exe

E-mails Sent:
To: (Varies, the following have been observed)

  • guef@[Domain Removed]

From: (Varies, the following have been observed)

  • msn@[Domain Removed]

Recipient Name: (Varies, the following have been observed)

  • guef@[Domain Removed]

Sender Name: (Varies, the following have been observed)

  • Im Online

Subject: (Varies, the following have been observed)

  • Im Online [local subnet].100

   

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.