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Trojan.StartPage.48254

Added to the Dr.Web virus database: 2012-10-26

Virus description added:

Technical Information

Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
blocks the following features:
  • System Restore (SR)
Executes the following:
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing" /v "OpenAdjacent" /t reg_dword /d 1 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v 2200 /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 2200 /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing" /v "OpenInForeground" /t reg_dword /d 1 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\New Windows" /v "PopupMgr" /t reg_sz /d no /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing" /v "ShortcutBehavior" /t reg_dword /d 1 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing" /v "PopupsUseNewWindow" /t reg_dword /d 1 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Control Panel\Desktop" /v AutoEndTasks /t reg_dword /d 1 /f
  • <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control" /v WaitToKillServiceTimeout /t reg_dword /d 300 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v DontUseDNSLoadBalancing /t reg_binary /d 01000000 /f
  • <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Update" /v UpdateMode /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v AllowWindowReuse /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v SyncMode5 /t reg_dword /d 3 /f
  • <SYSTEM32>\reg.exe delete "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\RemoteComputer\NameSpace\{D6277990-4C6A-11CF-8D87-00AA0060F5BF}" /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\PhishingFilter" /v "Enabled" /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "Hidden" /f /t reg_dword /d 1
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "ShowSuperHidden" /f /t reg_dword /d 1
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "DisableThumbnailCache" /f /t reg_dword /d 1
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "WebViewBarricade" /f /t reg_dword /d 1
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "ShowCompColor" /f /t reg_dword /d 1
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "HideIcons" /f /t reg_dword /d 0
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "HideFileExt" /f /t reg_dword /d 0
  • <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v "ForceClassicControlPanel" /f /t reg_dword /d 1
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "WebView" /f /t reg_dword /d 0
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\PhishingFilter" /v "ShownVerifyBalloon" /t reg_dword /d 3 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Streams" /v "Settings"=hex:08,00,00,00,04,00,00,00,01,00,00,00,00,77,7e,13,73,35,cf,11,ae, 69,08,00,2b,2e,12,62,04,00,00,00,02,00,00,00,43,00,00,00
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "SeparateProcess" /f /t reg_dword /d 1
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "NoNetCrawling" /f /t reg_dword /d 1
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "ClassicViewState" /f /t reg_dword /d 1
  • <SYSTEM32>\sc.exe delete "QuickDownlad Update"
  • <SYSTEM32>\sc.exe delete "QuickDownlad Service"
  • <SYSTEM32>\sc.exe delete "QuickDownlad Agent"
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /t reg_sz /d "http://ne##.paran.com" /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1200 /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1004 /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1001 /t reg_dword /d 0 /f
  • <SYSTEM32>\net1.exe stop "QuickDownload Agent"
  • <SYSTEM32>\net.exe stop "QuickDownload Agent"
  • <SYSTEM32>\cmd.exe /c ""%TEMP%\1.tmp\batfile.bat" "
  • <SYSTEM32>\net.exe stop "QuickDownload Service"
  • <SYSTEM32>\net1.exe stop "QuickDownload Update"
  • <SYSTEM32>\net.exe stop "QuickDownload Update"
  • <SYSTEM32>\net1.exe stop "QuickDownload Service"
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1201 /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore" /v DisableSR /t reg_dword /d 1 /f
  • <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update" /v AUState /t reg_dword /d 7 /f
  • <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update" /v AUOptions /t reg_dword /d 1 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BLOCK_LMZ_IMG" /v "iexplore.exe" /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Main" /v IEWatsonEnabled /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Cache" /v Persistent /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v UrlEncoding /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 2201 /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1405 /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1209 /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 2000 /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" /v NoAutoUpdate /t reg_dword /d 0 /f
  • <SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v StatusBarOther /t reg_dword /d 1 /f
  • <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa" /v forceguest /t reg_dword /d 0 /f
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2201' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1405' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2000' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2200' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2200' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1004' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1001' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1200' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1209' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1201' = '00000000'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • %TEMP%\1.tmp\batfile.bat

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android