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Virus Profile: Generic Downloader.x!F1CF7F3FD63D

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 7/2/2014
Date Added: 7/3/2014
Origin: Unknown
Length: 810760
Type: Trojan
Subtype: -
DAT Required: 7487
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
Length810760 bytes
MD5f1cf7f3fd63d88ac693b7dafefb62e6f
SHA16704fa9e6d2534b76fc392397b2a4ae1a4084b68


Other Common Detection Aliases

Company NamesDetection Names
Dr.WebAdware.Downware.2220
EsetWin32/DownloadAdmin.G application

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


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:

6704FA9E6D2534B76FC392397B2A4AE1A4084B68

The following files have been added to the system:

  • %TEMP%\nsz12.tmp\lua51.dll
  • %TEMP%\nsz12.tmp\System.dll
  • %TEMP%\nsz12.tmp\nsis7z.dll
  • %TEMP%\nsz12.tmp\LuaSocket\mime\core.dll
  • %TEMP%\nse11.tmp
  • %TEMP%\nsz12.tmp\skin\options.json
  • %TEMP%\nsz12.tmp\ffi.dll
  • %TEMP%\nsz12.tmp\bit.dll
  • %USERPROFILE%\My Documents\My Videos\Desktop.ini
  • %TEMP%\nsz12.tmp\nsisunz.dll
  • %TEMP%\nsz12.tmp\FloatingProgress.dll
  • %TEMP%\nsz12.tmp\LuaSocket\socket\core.dll
  • %TEMP%\nsz12.tmp\LuaXml_lib.dll
  • %TEMP%\nsz12.tmp\LuaBridge.dll

The following files have been deleted:

  • %TEMP%\nsz12.tmp\LuaSocket\lua\socket
  • %TEMP%\nsz12.tmp\LuaSocket\lua
  • %TEMP%\nsz12.tmp\skin\res
  • %TEMP%\nsz12.tmp\wininet
  • %TEMP%\nsz12.tmp\skin\skin
  • %TEMP%\nsz12.tmp\apps

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

  • %TEMP%\nsz12.tmp\skin\skin\minimise.gif
  • %TEMP%\nsz12.tmp\skin\skin\decline_offer_btn.gif
  • %TEMP%\nsz12.tmp\skin\skin\decline.gif
  • %TEMP%\nsz12.tmp\LuaSocket\lua\socket\ftp.lua
  • %TEMP%\nsz12.tmp\wininet\ltn12.lua
  • %TEMP%\nsz12.tmp\skin\skin\DALogo2.gif
  • %TEMP%\nsz12.tmp
  • %TEMP%\nsz12.tmp\skin\index.html
  • %TEMP%\nsz12.tmp\__web.xml
  • %TEMP%\nsz12.tmp\skin\skin\offers.css
  • %TEMP%\nsz12.tmp\utils.lua
  • %TEMP%\nsz12.tmp\Scheduler.lua
  • %TEMP%\nsz12.tmp\wininet\ftp.lua
  • %TEMP%\nsz12.tmp\version.dll
  • %TEMP%\nsz12.tmp\UiState.lua
  • %TEMP%\nsz12.tmp\skin\skin\DALogo.jpg
  • %TEMP%\nsz12.tmp\LuaSocket\lua\socket.lua
  • %TEMP%\nsz12.tmp\skin\res\jquery.js
  • %TEMP%\nsz12.tmp\json.lua
  • %TEMP%\nsz12.tmp\Sandbox.lua
  • %TEMP%\nsz12.tmp\definitions.lua
  • %TEMP%\nsz12.tmp\skin\skin\install_now_btn.gif
  • %TEMP%\nsz12.tmp\wininet\http.lua
  • %TEMP%\nsz12.tmp\LuaXml.lua
  • %TEMP%\nsz12.tmp\DownloadThread.lua
  • %TEMP%\nsz12.tmp\skin\skin\mod.css
  • %TEMP%\nsz12.tmp\CallbackProxy.lua
  • %TEMP%\nsz12.tmp\BrowserControl.lua
  • %TEMP%\nsz12.tmp\ProcessFreeFile.lua
  • %TEMP%\nsz12.tmp\luacom.dll
  • %TEMP%\nsz12.tmp\IntegratedOffer.lua
  • %TEMP%\nsz12.tmp\skin\skin\progress.css
  • %TEMP%\nsz12.tmp\skin\skin\skip_all_offers_btn.gif
  • %TEMP%\nsz12.tmp\BundleInstall.lua
  • %TEMP%\nsz12.tmp\skin\skin\headerBG.gif
  • %TEMP%\nsz12.tmp\skin\skin\step_off.gif
  • %TEMP%\nsz12.tmp\AdvancedTests.lua
  • %TEMP%\nsz12.tmp\skin\res\common.css
  • %TEMP%\nsz12.tmp\browserutils.dll
  • %TEMP%\nsz12.tmp\skin\skin\ok.gif
  • %TEMP%\nsz12.tmp\Downloads.lua
  • %TEMP%\nsz12.tmp\skin\skin\.DS_Store
  • %TEMP%\nsz12.tmp\LuaSocket\lua\mime.lua
  • %TEMP%\nsz12.tmp\LuaSocket\lua\ltn12.lua
  • %TEMP%\nsz12.tmp\skin\skin\bg4.gif
  • %TEMP%\nsz12.tmp\skin\skin\stepBG.gif
  • %TEMP%\nsz12.tmp\EagerInstall.lua
  • %TEMP%\nsz12.tmp\wininet\compat.lua
  • %TEMP%\nsz12.tmp\skin\skin\next.gif
  • %TEMP%\nsz12.tmp\skin\res\knockout.js
  • %TEMP%\nsz12.tmp\DownloadList.lua
  • %TEMP%\nsz12.tmp\skin\skin\back.gif
  • %TEMP%\nsz12.tmp\skin\skin\acceptGreen2x.gif
  • %TEMP%\nsz12.tmp\skin\skin\truste.gif
  • %TEMP%\nsz12.tmp\wininet\wininet_h.lua
  • %TEMP%\nsz12.tmp\skin\skin\developer_btn.gif
  • %TEMP%\nsz12.tmp\wininet\core.lua
  • %TEMP%\nsz12.tmp\UACInfo.dll
  • %TEMP%\nsz12.tmp\skin.zip
  • %TEMP%\nsz12.tmp\wininet\url.lua
  • %TEMP%\nsz12.tmp\Env.lua
  • %TEMP%\nsz12.tmp\extension.tlb
  • %TEMP%\nsz12.tmp\wininet\wintypes.lua
  • %TEMP%\nsz12.tmp\packaged_app.lua
  • %TEMP%\nsz12.tmp\Events.lua
  • %TEMP%\nsz12.tmp\skin\skin\close.gif
  • %TEMP%\nsz12.tmp\NotifyIcon.lua
  • %TEMP%\nsz12.tmp\un.package.exe
  • %TEMP%\nsz12.tmp\LuaSocket\lua\socket\tp.lua
  • %TEMP%\nsz12.tmp\LuaSocket\lua\socket\url.lua
  • %TEMP%\nsz12.tmp\skin\skin\uninstall.gif
  • %TEMP%\nsz12.tmp\service_registry.lua
  • %TEMP%\nsz12.tmp\LuaSocket\lua\socket\smtp.lua
  • %TEMP%\nsz12.tmp\skin\skin\cancel.gif
  • %TEMP%\nsz12.tmp\skin\skin\cancel.css
  • %TEMP%\nsz12.tmp\skin\res\common.js
  • %TEMP%\nsz10.tmp
  • %TEMP%\nsz12.tmp\win32_constants.lua
  • %TEMP%\nsz12.tmp\GuiInit.lua
  • %TEMP%\nsz12.tmp\wininet\defs.lua
  • %TEMP%\nsz12.tmp\skin\skin\icon_folder.gif
  • %TEMP%\nsz12.tmp\skin\skin\step_on.gif
  • %TEMP%\nsz12.tmp\LuaSocket\lua\socket\http.lua

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\SESSION MANAGER\PENDINGFILERENAMEOPERATIONS = \??\%TEMP%\nsz12.tmp\bit.dll

The applications attempted the following network connection(s):

  • 108.168.160.**:80
  • hxxp://mirror.mirror-files.com/skins/da/03042014/*****

   

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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