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Threat Profile: Adware-Zeno!75A194986A77

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 5/4/2012
Date Added: 5/4/2012
Origin: Unknown
Length: 49164
Type: Program
Subtype: Adware
DAT Required: 6701
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 DetectionAdware-Zeno
Length49164 bytes
MD575a194986a77e4b33e22534f77e1c75e
SHA1b92df0ee44e69367e42dd30b5b5ad6b41a38ef98


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareRiskware.AdWare.Win32.ZenoSearch.d!IK
ahnlabWin-Trojan/Agent.49161
avastWin32:Dialer-XS
AVG (GriSoft)Generic.HWR
aviraTR/Dropper.Gen
Kasperskynot-a-virus:AdWare.Win32.ZenoSearch.d
BitDefenderGeneric.Zeno.EC455E41
clamavAdware.Zeno-4
Dr.WebTrojan.DownLoader.6077
F-ProtW32/Adware.KSH
Microsoftadware:win32/zenosearch
SymantecAdware.ZenoSearch
Eseta variant of Win32/Adware.ZenoSearch
normanW32/Obfuscated.AK!genr
pandaAdware/Zeno
vba32Adware.Zenosearch.D
V-BusterAdware.ZenoSearch!LUO8Az1Z5Hc
Vet (Computer Associates)Win32/iStartDownloader_i

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


ActivitiesRisk Levels
Creates one or more shortcuts (.LNK files) to provide user accessible links to start a program usually form the desktop or start menu.Low
Enumerates many system files and directories.Low
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaAdware-Zeno
McAfee SupportedAdware-Zeno



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:

b92df0ee44e69367e42dd30b5b5ad6b41a38ef98

The following files have been added to the system:

  • %USERPROFILE%\Start Menu\Programs\Startup\Z_Start.lnk
  • %WINDIR%\SYSTEM32\dwdsregt.exe
  • %WINDIR%\SYSTEM32\msnav32.ax
The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INTERNET SETTINGS\ENABLEAUTODIAL = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\{30-01-17-77-ZN} = %WINDIR%\SYSTEM32\dwdsregt.exe CORN001
The applications attempted the following network connection(s):

  • 69.43.161.***:80
  • hxxp://www.zenotecnico.com/*****
  • 204.13.161.***: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.