For Consumer

Virus Profile: BackDoor-AVW!40050F8A52C1

Threat Search
Print
   
Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 3/28/2013
Date Added: 3/28/2013
Origin: Unknown
Length: 350764
Type: Trojan
Subtype: Remote Access
DAT Required: 7028
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-AVW
Length350764 bytes
MD540050f8a52c105a341099278c0303571
SHA1434b6b85de01cb3380cd8847dac46de5cd3b14e9


Other Common Detection Aliases

Company NamesDetection Names
ahnlabWin-Trojan/Prorat.350764
avastWin32:Prorat-IR
AVG (GriSoft)BackDoor.Generic3.AWU
aviraBDS/Prorat.I
KasperskyBackdoor.Win32.Prorat.npv
Dr.WebBackDoor.ProRat.3085
FortiNetW32/Prorat.I!tr.bdr
MicrosoftBackdoor:Win32/Prorat.L
SymantecTrojan Horse
EsetWin32/Prorat.19
normanProrat.gen1.gen
SophosTroj/Prorat-19
Trend MicroBKDR_AVW.A
vba32Backdoor.Win32.VB.aoi

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


ActivitiesRisk Levels
Attempts to write to a memory location of a Windows system processHigh
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
Enumerates process listLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaBackDoor-AVW
McAfee SupportedBackDoor-AVW



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:

434B6B85DE01CB3380CD8847DAC46DE5CD3B14E9

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\winkey.dll
  • %WINDIR%\services.exe
  • %WINDIR%\SYSTEM32\reginv.dll
  • %WINDIR%\SYSTEM32\fservice.exe

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

  • %TEMP%\434B6B85DE01CB3380CD8847DAC46DE5CD3B14E9.bat
  • %WINDIR%\system\sservice.exe

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\ACTIVE SETUP\INSTALLED COMPONENTS\{5Y99AE78-58TT-11DW-BE53-Y67078979Y}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\BULAS = 49
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\FW_KILL = 49
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\HATA = Invalid memory block address
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\ICQ_UIN = 087/03/334/019
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\ICQ_UIN2
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\KSIL = 49
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\KURBAN_ISMI = nlqn
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\LANNOTIFIE
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\MAIL
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\ONLINE_LIST
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\PORT = 4001
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\SERVERVERSIONINT = 19
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\SIFRE = nlqn
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\TPORT = 48
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\XP_FW_DISABLE = 49
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT SCRIPT HOST\MICROSOFT DXDIAG\WINSETTINGS\XP_SYS_RECOVERY = 49
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\ACTIVE SETUP\INSTALLED COMPONENTS\{5Y99AE78-58TT-11DW-BE53-Y67078979Y}\STUBPATH = %WINDIR%\system\sservice.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\SHELL = Explorer.exe %WINDIR%\SYSTEM32\fservice.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER\RUN\DIRECTX FOR MICROSOFT® WINDOWS = %WINDIR%\SYSTEM32\fservice.exe
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\SRSERVICE\START = 4

The applications attempted the following network connection(s):

  • 196.12.225.***:4110
  • 196.12.225.***:41100
  • 196.12.225.***:4112

   

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.

   

PC Infected? Get Expert Help

McAfee
Virus Removal Service

Connect to one of our Security Experts by phone. Have your PC fixed remotely - while you watch!

$89.95