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Trojan.StartPage.52305

Aggiunto al database dei virus Dr.Web: 2013-03-12

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\top.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\zhinanzhenbrowser.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\hsreg.exe] 'Debugger' = '<SYSTEM32>\ruixing.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avant.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\See9IE.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\XWebStar.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\SaaYaa.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\TouchNet.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MyIE.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Iparmor.exe] 'Debugger' = '<SYSTEM32>\ruixing.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360safebox.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RSTray.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360SE.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kastray.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ast.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360tray.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\srgui.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\winpatrol.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sriecli.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\chrome.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Maxthon.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KylinBrowser.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\TTraveler.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\opera.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Runonce] 'ringsig' = '%ALLUSERSPROFILE%\Application Data\shared.exe'
  • [<HKLM>\SOFTWARE\Classes\HTTP\shell\open\command] '' = '"%PROGRAM_FILES%\Internet Explorer\IEXPLORE" ""'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\firefox.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\theworld.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\vu.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\SogouExplorer.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\IERepair.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\tango.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\GreenBrowser.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\iemate.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\suda.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MiniIE.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360Start.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AdoIE.exe] 'Debugger' = 'C:\iexplor.bat'
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
Creates and executes the following:
  • C:\sbbfd.exe
Executes the following:
  • <SYSTEM32>\msiexec.exe /regserver
  • %WINDIR%\regedit.exe /s key.reg
Modifies settings of Windows Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoInternetIcon' = '00000001'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • %ALLUSERSPROFILE%\Application Data\i\topbg04.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg03.gif
  • %ALLUSERSPROFILE%\Application Data\i\zj_2.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg05.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_5.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_4.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg02.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg01.gif
  • %HOMEPATH%\Start Menu\Programs\Internet Explore.lnk\Internet Explore.lnk
  • %HOMEPATH%\Start Menu\Internet Explore.lnk
  • %APPDATA%\Microsoft\Internet Explorer\Quick Launch\╞Ї╢п Internet Explorer фп└└╞ў.lnk
  • %TEMP%\~1.bat
  • C:\iexplor.bat
  • C:\Users\All Users\Desktop\Internet Explore.lnk
  • C:\key.reg
  • C:\Internet Explore.lnk
  • %ALLUSERSPROFILE%\Application Data\images\logo.jpg
  • %ALLUSERSPROFILE%\Application Data\images\gl_1.gif
  • %ALLUSERSPROFILE%\Application Data\images\srh_1.gif
  • %ALLUSERSPROFILE%\Application Data\images\sd_1.css
  • %ALLUSERSPROFILE%\桌面\Internet Explore.lnk
  • C:\sbbfd.exe
  • %ALLUSERSPROFILE%\Application Data\images\funb.js
  • %ALLUSERSPROFILE%\Application Data\daohang.htm
  • %ALLUSERSPROFILE%\Application Data\i\srh_1.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_5.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_3.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_2.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_2.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_1.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_4.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_3.gif
Sets the 'hidden' attribute to the following files:
  • %ALLUSERSPROFILE%\Application Data\i\srh_5.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg01.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg02.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_2.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_3.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_4.gif
  • %ALLUSERSPROFILE%\Application Data\i\zj_2.gif
  • C:\iexplor.bat
  • %TEMP%\~1.bat
  • %ALLUSERSPROFILE%\Application Data\i\topbg03.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg04.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg05.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_1.gif
  • %ALLUSERSPROFILE%\Application Data\images\gl_1.gif
  • %ALLUSERSPROFILE%\Application Data\images\logo.jpg
  • %ALLUSERSPROFILE%\Application Data\images\sd_1.css
  • C:\sbbfd.exe
  • %ALLUSERSPROFILE%\Application Data\daohang.htm
  • %ALLUSERSPROFILE%\Application Data\images\funb.js
  • %ALLUSERSPROFILE%\Application Data\i\gl_3.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_4.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_5.gif
  • %ALLUSERSPROFILE%\Application Data\images\srh_1.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_1.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_2.gif
Deletes the following files:
  • %TEMP%\~1.bat
  • C:\key.reg
Modifies the HOSTS file.
Miscellaneous:
Searches for the following windows:
  • ClassName: 'RegEdit_RegEdit' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'EDIT' WindowName: ''

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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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

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After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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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.

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