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Virus Profile: Generic Downloader.x!45F6774B8C01

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 9/12/2013
Date Added: 9/12/2013
Origin: Unknown
Length: 2122376
Type: Trojan
Subtype: -
DAT Required: 7195
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 Downloader.x
Length2122376 bytes
MD545f6774b8c01f7c9429b3ea0331a50ab
SHA1d9e0c0145363b9921872cd3c06487a361923f0ad


Other Common Detection Aliases

Company NamesDetection Names
KasperskyTrojan-Downloader.Win32.MultiDL.m
FortiNetW32/MultiDL.M!tr.dldr
EsetWin32/Toolbar.Besttoolbars.C application
vba32TrojanDownloader.Multidl

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


ActivitiesRisk Levels
Enumerates many system files and directories.Low
Process attempts to call itself recursivelyLow


McAfee ScansScan Detections
McAfee BetaGeneric Downloader.x
McAfee SupportedGeneric Downloader.x



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:

D9E0C0145363B9921872CD3C06487A361923F0AD

The following files have been added to the system:

  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\button.xml
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\icon24.ico
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\content.js
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\icon128.png
  • %PROGRAMFILES%\Speed Test Analysis\updaterWrapper.js
  • %PROGRAMFILES%\Speed Test Analysis\ScriptHost.dll
  • %PROGRAMFILES%\Speed Test Analysis\bg.js
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\background.html
  • %PROGRAMFILES%\Speed Test Analysis\config.xml
  • %PROGRAMFILES%\Speed Test Analysis\mz\background.js
  • %PROGRAMFILES%\Speed Test Analysis\icon24.png
  • %PROGRAMFILES%\Speed Test Analysis\icon48.png
  • %PROGRAMFILES%\Speed Test Analysis\icon128.png
  • %PROGRAMFILES%\Speed Test Analysis\background.html
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\icon32.ico
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\icon48.png
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\icon16.png
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\framework.png
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\skin\framework.css
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\icon18.png
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\framework.js
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\framework.xul
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\icon32.png
  • %PROGRAMFILES%\Speed Test Analysis\icon18.ico
  • %PROGRAMFILES%\Speed Test Analysis\uninst.exe
  • %PROGRAMFILES%\Speed Test Analysis\icon24.ico
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\settings.json
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\bg.js
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\config.js
  • %PROGRAMFILES%\Speed Test Analysis\jquery-1.9.1.min.js
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome.manifest
  • %PROGRAMFILES%\Speed Test Analysis\mz\content.js
  • %PROGRAMFILES%\Speed Test Analysis\icon18.png
  • %APPDATA%\SpeedTestAnalysis\speedtestanalysis.crx
  • %PROGRAMFILES%\Speed Test Analysis\json2.min.js
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\mz\background.js
  • %PROGRAMFILES%\Speed Test Analysis\ButtonSite.dll
  • %PROGRAMFILES%\Speed Test Analysis\updater.js
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\options.xul
  • %APPDATA%\SpeedTestAnalysis\chrome_install.exe
  • %PROGRAMFILES%\Speed Test Analysis\BackgroundHost64.exe
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\icon24.png
  • %PROGRAMFILES%\Speed Test Analysis\AddonsFramework.Typelib.dll
  • %PROGRAMFILES%\Speed Test Analysis\BackgroundHost.exe
  • %PROGRAMFILES%\Speed Test Analysis\content.js
  • %PROGRAMFILES%\Speed Test Analysis\icon32.ico
  • %PROGRAMFILES%\Speed Test Analysis\ButtonSite64.dll
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\mz\content.js
  • %PROGRAMFILES%\Speed Test Analysis\BackgroundHostPS.dll
  • %PROGRAMFILES%\Speed Test Analysis\icon32.png
  • %PROGRAMFILES%\Speed Test Analysis\uninstall.exe
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\install.rdf
  • %PROGRAMFILES%\Speed Test Analysis\icon16.png
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\jquery-1.9.1.min.js
  • %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]\chrome\content\icon18.ico

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

  • %TEMP%\nsw5E.tmp\UAC.dll
  • %TEMP%\nsy10.tmp
  • %TEMP%\nsb5D.tmp
  • %TEMP%\nsk7D.tmp\nsisunz.dll
  • %TEMP%\speedtestanalysis.xpi
  • %TEMP%\install_helper.exe
  • %TEMP%\nsw5E.tmp
  • %TEMP%\speedtestanalysis.exe
  • %TEMP%\nsk7D.tmp
  • %TEMP%\nsw5E.tmp\help_page.ini
  • %TEMP%\nsw5E.tmp\ie9install.bmp
  • %TEMP%\nsw5E.tmp\System.dll

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\MINIE\
  • HKEY_CURRENT_USER\SOFTWARE\MOZILLA\
  • HKEY_CURRENT_USER\SOFTWARE\MOZILLA\FIREFOX\
  • HKEY_CURRENT_USER\SOFTWARE\MOZILLA\FIREFOX\EXTENSIONS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\GOOGLE\
  • HKEY_LOCAL_MACHINE\SOFTWARE\GOOGLE\CHROME\
  • HKEY_LOCAL_MACHINE\SOFTWARE\GOOGLE\CHROME\EXTENSIONS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\GOOGLE\CHROME\EXTENSIONS\KCKGNNIPHEGLEJODDFHEKDJPBDBINHMB\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEED TEST ANALYSIS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEEDTESTANALYSIS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MOZILLA\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MOZILLA\FIREFOX\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MOZILLA\FIREFOX\EXTENSIONS\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\MINIE\COMMANDBARENABLED = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INTERNET SETTINGS\CERTIFICATEREVOCATION = 0
  • HKEY_CURRENT_USER\SOFTWARE\MOZILLA\FIREFOX\EXTENSIONS\SPEEDTESTANALYSIS@[Domain Removed] = %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]
  • HKEY_LOCAL_MACHINE\SOFTWARE\GOOGLE\CHROME\EXTENSIONS\KCKGNNIPHEGLEJODDFHEKDJPBDBINHMB\PATH = %APPDATA%\SpeedTestAnalysis\SpeedTestAnalysis.crx
  • HKEY_LOCAL_MACHINE\SOFTWARE\GOOGLE\CHROME\EXTENSIONS\KCKGNNIPHEGLEJODDFHEKDJPBDBINHMB\VERSION = 1.0.0.3
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEED TEST ANALYSIS\DISPLAYICON = %PROGRAMFILES%\Speed Test Analysis\uninstall.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEED TEST ANALYSIS\DISPLAYNAME = Speed Test Analysis
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEED TEST ANALYSIS\DISPLAYVERSION = 1.0.0.3
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEED TEST ANALYSIS\INSTDIR = %PROGRAMFILES%\Speed Test Analysis
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEED TEST ANALYSIS\PUBLISHER = SpeedAnalysis.com
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEED TEST ANALYSIS\UNINSTALLSTRING = %PROGRAMFILES%\Speed Test Analysis\uninstall.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEED TEST ANALYSIS\URLINFOABOUT = http://www.speedanalysis.com/
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\SPEEDTESTANALYSIS\UNINSTALLSTRING = %PROGRAMFILES%\Speed Test Analysis\uninst.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MOZILLA\FIREFOX\EXTENSIONS\SPEEDTESTANALYSIS@[Domain Removed] = %APPDATA%\Mozilla\Extensions\speedtestanalysis@[Domain Removed]
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\SESSION MANAGER\PENDINGFILERENAMEOPERATIONS = \??\%TEMP%\nsw5E.tmp\

   

Please use the following instructions for all supported versions of Windows:


1. Disable Windows System Restore. For instructions, please refer to: http://www.mcafee.com/us/downloads/free-tools/disabling-system-restore.aspx

2. Update your McAfee Anti-Virus product to the latest version (when possible), and ensure the latest DAT and Engine and any applicable EXTRA.DATs are installed.

3. Run a full system scan. (On-Demand Scan)

4. Reboot, as soon as it is convenient, to ensure all malicious components are removed.

   

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