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Virus Profile: Generic PWS.y!A4D3768B574B

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 1/16/2013
Date Added: 1/16/2013
Origin: Unknown
Length: 434176
Type: Trojan
Subtype: -
DAT Required: 6957
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 PWS.y
Length434176 bytes
MD5a4d3768b574b0f70abe7c5c30e037e6f
SHA13d635150a763cb59edabf71ac551553e45747112


Other Common Detection Aliases

Company NamesDetection Names
avastWin32:Spyware-gen
AVG (GriSoft)PSW.Generic9.CARY (Trojan horse)
aviraTR/Spy.Gen
BitDefenderTrojan.Generic.8222760
Dr.WebTrojan.Siggen4.37759
FortiNetW32/KeyLogger.BZ!tr
Microsofttrojan:win32/malagent
SymantecInfostealer
EsetWin32/Spy.Agent.FDNXVBZ trojan (probably variant)
normanW32/Troj_Generic.BPSQU
SophosMal/MSIL-BZ
V-BusterTrojanSpy.KeyLogger!gtBnVd02XlU (trojan)

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


ActivitiesRisk Levels
Prevents the use of the default Windows Registry Editor.High
Disables the Windows Task Manager.High
Adds debugger values to the Image file execution options registry keys. Can be used to prevent the launch of legitimate program.High
Adds or modifies system policies. Could be used to prevent the or detour the use of common system tools.High
Enumerates many system files and directories.Low
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric PWS.y
McAfee SupportedGeneric PWS.y



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:

3D635150A763CB59EDABF71AC551553E45747112

The following files have been added to the system:

  • %USERPROFILE%\Local Settings\Application Data\GDIPFONTCACHEV1.DAT
  • %WINDIR%\SYSTEM32\Client.exe

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\NETWORK CONNECTIONS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\ESENT\PROCESS\3D635150A763CB59EDABF71AC551553E45747112\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\ESENT\PROCESS\3D635150A763CB59EDABF71AC551553E45747112\DEBUG\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\IMAGE FILE EXECUTION OPTIONS\REGEDIT.EXE\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\IMAGE FILE EXECUTION OPTIONS\REGEDT32.EXE\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\IMAGE FILE EXECUTION OPTIONS\TASKMGR.EXE\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\DISABLEREGISTRYTOOLS = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\DISABLETASKMGR = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\0CLIENT = %WINDIR%\SYSTEM32\Client.exe
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\NETWORK CONNECTIONS\NC_ENABLEADMINPROHIBITS = 1
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\NETWORK CONNECTIONS\NC_LANPROPERTIES = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\ESENT\PROCESS\3D635150A763CB59EDABF71AC551553E45747112\DEBUG\TRACE LEVEL
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\IMAGE FILE EXECUTION OPTIONS\REGEDIT.EXE\DEBUGGER = whoami
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\IMAGE FILE EXECUTION OPTIONS\REGEDT32.EXE\DEBUGGER = whoami
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\IMAGE FILE EXECUTION OPTIONS\TASKMGR.EXE\DEBUGGER = whoami
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\EVENTLOG\APPLICATION\ESENT\CATEGORYCOUNT = 16
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\EVENTLOG\APPLICATION\ESENT\CATEGORYMESSAGEFILE = %WINDIR%\SYSTEM32\ESENT.dll
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\EVENTLOG\APPLICATION\ESENT\EVENTMESSAGEFILE = %WINDIR%\SYSTEM32\ESENT.dll
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\EVENTLOG\APPLICATION\ESENT\TYPESSUPPORTED = 7

   

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.