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Threat Profile: Generic PWS.y!8AF97FE0BC56

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 12/4/2012
Date Added: 12/4/2012
Origin: Unknown
Length: 973512
Type: Program
Subtype: -
DAT Required: 6915
Removal Instructions
   
 
 
   

Description

McAfee Labs&trade recognizes that this program may have legitimate uses in contexts where an authorized administrator has knowingly installed this application. If you agreed to a license agreement for this or another bundled application, you may have legal obligations with regard to removing this software, or to using the host application without this software. Please contact the software vendor for further information.

See http://vil.nai.com/vil/DATReadme.aspx for a list of program detections added to the DATs.

See http://vil.nai.com/vil/pups/configuration.aspx for information about how to enable, disable, and exclude the detection of legitimately installed programs.

This software is not a virus or a Trojan. It is detected as a "potentially unwanted program" (PUP). PUPs are any piece of software that a reasonably security- or privacy-minded computer user may want to be informed of and, in some cases, remove. PUPs are often made by a legitimate corporate entity for some beneficial purpose, but they alter the security state of the computer on which they are installed, or the privacy posture of the user of the system, such that most users will want to be aware of them.

Symptoms

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Method

This is not a virus or Trojan. PUPs do not "infect" systems. They may be installed by a user individually or possibly as a part of a software package (in a bundle, for example).

   

Virus Characteristics

This software is not a virus or a Trojan. It is detected as a "potentially unwanted program" (PUP). PUPs are any piece of software that a reasonably security- or privacy-minded computer user may want to be informed of and, in some cases, remove. PUPs are often made by a legitimate corporate entity for some beneficial purpose, but they alter the security state of the computer on which they are installed, or the privacy posture of the user of the system, such that most users will want to be aware of them.

File PropertiesProperty Values
McAfee DetectionGeneric PWS.y
Length973512 bytes
MD58af97fe0bc56f942026ebb83efc01d14
SHA1ec13cfa67d2bedccb5e2976c7445c182df7c24f3


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareRiskware.HackTool.Findkey!IK
ahnlabWin-AppCare/WinKeyfinder.973512
AVG (GriSoft)Crack.BO
aviraTR/Dldr.Agent.973512
Kasperskynot-a-virus:PSWTool.Win32.RAS.ag
clamavPUA.Win32.Packer.RarSfx
F-ProtW32/Backdoor2.DWRC
SymantecDownloader
normanW32/Suspicious_Gen2.AAVZK
risingTrojan.Win32.Generic.125501A8
SophosMal/Bckdr-BE
Trend MicroHKTL_WGAFIX
vba32Unknown.Win32Virus
Vet (Computer Associates)Win32/Tnega.AFMC

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


ActivitiesRisk Levels
Enumerates many system files and directories.Low
Adds or modifies Internet Explorer cookiesLow
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:

ec13cfa67d2bedccb5e2976c7445c182df7c24f3

The following files have been added to the system:

  • %ALLUSERSPROFILE%\Application Data\Microsoft\Crypto\RSA\MachineKeys\e8b4e4880c5144bdfae13c8cf756ca85_584cabc6-b3f0-4d52-b7e2-3ffbf17c3258
  • %ALLUSERSPROFILE%\Application Data\Microsoft\Crypto\RSA\MachineKeys\6277db6811abf3f3e603b2350116d814_584cabc6-b3f0-4d52-b7e2-3ffbf17c3258
  • %WINDIR%\SYSTEM32\drivers\etc\hosts1.bak
  • %TEMP%\nsm17.tmp
  • %ALLUSERSPROFILE%\Application Data\Microsoft\Crypto\RSA\MachineKeys\0394434ef136e1e6effa1c34923eecbf_584cabc6-b3f0-4d52-b7e2-3ffbf17c3258
  • %ALLUSERSPROFILE%\application data\office genuine advantage\data\data.dat
  • %ALLUSERSPROFILE%\application data\windows genuine advantage\data\data.dat

The following files have been changed:

  • %WINDIR%\SYSTEM32\drivers\etc\hosts

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

  • C:\wga\officereg.txt
  • C:\wga\MGADiag.exe
  • %TEMP%\nsx18.tmp\System.dll
  • C:\wga\wga.cmd
  • C:\wga\findkey.exe
  • C:\wga\wga.exe
  • C:\wga\Keygen.exe
  • %TEMP%\nsh16.tmp
  • C:\wga\chgxp.vbs
  • %TEMP%\nsx18.tmp
  • C:\wga\wga-fix.exe

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS GENUINE ADVANTAGE\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS SCRIPT HOST\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS SCRIPT HOST\SETTINGS\
  • HKEY_CURRENT_USER\SOFTWARE\WINRAR SFX\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\WGALOGON\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\WGALOGON\SETTINGS\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS GENUINE ADVANTAGE\ID = {D3BB217C-9493-4306-82D7-29C0AFF8D902}
  • HKEY_CURRENT_USER\SOFTWARE\WINRAR SFX\C%% = c:\

   

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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