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Trojan.Siggen3.761

Added to the Dr.Web virus database: 2011-08-15

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\backup.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
blocks execution of the following system utilities:
  • Registry Editor (RegEdit)
Creates and executes the following:
  • C:\Far\Addons\Tables\Cyrillic\E-Mail Double Conversion\backup.exe C:\Far\Addons\Tables\Cyrillic\E-Mail Double Conversion\
  • %CommonProgramFiles%\Microsoft Shared\DW\backup.exe %CommonProgramFiles%\Microsoft Shared\DW\
  • C:\Far\PlugDoc\Examples\Editor\Align\backup.exe C:\Far\PlugDoc\Examples\Editor\Align\
  • %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\backup.exe %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\
  • %CommonProgramFiles%\Microsoft Shared\DAO\backup.exe %CommonProgramFiles%\Microsoft Shared\DAO\
  • C:\Far\Addons\XLat\backup.exe C:\Far\Addons\XLat\
  • C:\Far\PlugDoc\Examples\Editor\AutoWrap\backup.exe C:\Far\PlugDoc\Examples\Editor\AutoWrap\
  • C:\Far\PlugDoc\Headers.c\data.exe C:\Far\PlugDoc\Headers.c\
  • %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Accessibility\backup.exe %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Accessibility\
  • C:\Far\Plugins\backup.exe C:\Far\Plugins\
  • C:\Far\Addons\Tables\Central European\backup.exe C:\Far\Addons\Tables\Central European\
  • %ALLUSERSPROFILE%\Start Menu\Programs\backup.exe %ALLUSERSPROFILE%\Start Menu\Programs\
  • C:\Far\PlugDoc\Examples\Compare\backup.exe C:\Far\PlugDoc\Examples\Compare\
  • %ALLUSERSPROFILE%\Documents\My Pictures\backup.exe %ALLUSERSPROFILE%\Documents\My Pictures\
  • %CommonProgramFiles%\backup.exe %CommonProgramFiles%\
  • C:\Far\Addons\Tables\Cyrillic\backup.exe C:\Far\Addons\Tables\Cyrillic\
  • %ALLUSERSPROFILE%\Documents\My Videos\backup.exe %ALLUSERSPROFILE%\Documents\My Videos\
  • C:\Far\PlugDoc\Examples\Editor\System Restore.exe C:\Far\PlugDoc\Examples\Editor\
  • %ALLUSERSPROFILE%\Documents\My Pictures\Sample Pictures\backup.exe %ALLUSERSPROFILE%\Documents\My Pictures\Sample Pictures\
  • %CommonProgramFiles%\Microsoft Shared\backup.exe %CommonProgramFiles%\Microsoft Shared\
  • %PROGRAM_FILES%\ComPlus Applications\backup.exe %PROGRAM_FILES%\ComPlus Applications\
  • %CommonProgramFiles%\Microsoft Shared\DW\1028\backup.exe %CommonProgramFiles%\Microsoft Shared\DW\1028\
  • %CommonProgramFiles%\Microsoft Shared\MSInfo\backup.exe %CommonProgramFiles%\Microsoft Shared\MSInfo\
  • %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Entertainment\backup.exe %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Entertainment\
  • C:\Far\Addons\Tables\Western European\backup.exe C:\Far\Addons\Tables\Western European\
  • C:\Far\Addons\XLat\Russian\backup.exe C:\Far\Addons\XLat\Russian\
  • C:\Far\Plugins\ascii\src\backup.exe C:\Far\Plugins\ascii\src\
  • %WINDIR%\backup.exe %WINDIR%\
  • %ALLUSERSPROFILE%\Start Menu\Programs\Games\backup.exe %ALLUSERSPROFILE%\Start Menu\Programs\Games\
  • %CommonProgramFiles%\MSSoap\Binaries\backup.exe %CommonProgramFiles%\MSSoap\Binaries\
  • C:\Far\PlugDoc\Examples\FileCase\System Restore.exe C:\Far\PlugDoc\Examples\FileCase\
  • %CommonProgramFiles%\MSSoap\backup.exe %CommonProgramFiles%\MSSoap\
  • C:\Far\Plugins\ascii\backup.exe C:\Far\Plugins\ascii\
  • %CommonProgramFiles%\Microsoft Shared\DW\1025\backup.exe %CommonProgramFiles%\Microsoft Shared\DW\1025\
  • C:\Far\Addons\Tables\Hebrew\backup.exe C:\Far\Addons\Tables\Hebrew\
  • %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Communications\backup.exe %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Communications\
  • %ALLUSERSPROFILE%\Start Menu\Programs\Administrative Tools\backup.exe %ALLUSERSPROFILE%\Start Menu\Programs\Administrative Tools\
  • C:\Far\PlugDoc\Examples\Editor\Brackets\backup.exe C:\Far\PlugDoc\Examples\Editor\Brackets\
  • %PROGRAM_FILES%\FireFox\data.exe %PROGRAM_FILES%\FireFox\
  • C:\Far\PlugDoc\Examples\FARCmds\backup.exe C:\Far\PlugDoc\Examples\FARCmds\
  • C:\Far\PlugDoc\Headers.pas\backup.exe C:\Far\PlugDoc\Headers.pas\
  • %ALLUSERSPROFILE%\Start Menu\backup.exe %ALLUSERSPROFILE%\Start Menu\
  • %HOMEPATH%\Start Menu\backup.exe %HOMEPATH%\Start Menu\
  • %ALLUSERSPROFILE%\backup.exe %ALLUSERSPROFILE%\
  • C:\Far\Addons\backup.exe C:\Far\Addons\
  • C:\Far\backup.exe C:\Far\
  • %HOMEPATH%\My Documents\My Pictures\backup.exe %HOMEPATH%\My Documents\My Pictures\
  • C:\Far\Addons\Colors\backup.exe C:\Far\Addons\Colors\
  • %HOMEPATH%\Start Menu\Programs\Accessories\System Restore.exe %HOMEPATH%\Start Menu\Programs\Accessories\
  • %ALLUSERSPROFILE%\Desktop\backup.exe %ALLUSERSPROFILE%\Desktop\
  • C:\Far\Addons\Archivers\backup.exe C:\Far\Addons\Archivers\
  • %HOMEPATH%\Start Menu\Programs\backup.exe %HOMEPATH%\Start Menu\Programs\
  • %HOMEPATH%\Cookies\backup.exe %HOMEPATH%\Cookies\
  • %HOMEPATH%\Desktop\backup.exe %HOMEPATH%\Desktop\
  • %HOMEPATH%\System Restore.exe %HOMEPATH%\
  • C:\backup.exe \
  • C:\Documents and Settings\backup.exe C:\Documents and Settings\
  • %HOMEPATH%\My Documents\Downloads\backup.exe %HOMEPATH%\My Documents\Downloads\
  • %HOMEPATH%\My Documents\My Music\backup.exe %HOMEPATH%\My Documents\My Music\
  • %HOMEPATH%\My Documents\backup.exe %HOMEPATH%\My Documents\
  • %HOMEPATH%\Favorites\backup.exe %HOMEPATH%\Favorites\
  • %HOMEPATH%\Favorites\Links\backup.exe %HOMEPATH%\Favorites\Links\
  • %ALLUSERSPROFILE%\Documents\backup.exe %ALLUSERSPROFILE%\Documents\
  • C:\Far\PlugDoc\backup.exe C:\Far\PlugDoc\
  • C:\Far\Addons\Shell\data.exe C:\Far\Addons\Shell\
  • <Auxiliary element> <Auxiliary element>
  • C:\Far\Addons\SetUp\backup.exe C:\Far\Addons\SetUp\
  • %ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\backup.exe %ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\
  • C:\Far\PlugDoc\Examples\backup.exe C:\Far\PlugDoc\Examples\
  • C:\Far\Addons\Tables\backup.exe C:\Far\Addons\Tables\
  • %ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\000D7521\data.exe %ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\000D7521\
  • %ALLUSERSPROFILE%\Favorites\backup.exe %ALLUSERSPROFILE%\Favorites\
  • %PROGRAM_FILES%\backup.exe %PROGRAM_FILES%\
  • %HOMEPATH%\Start Menu\Programs\Accessories\Entertainment\backup.exe %HOMEPATH%\Start Menu\Programs\Accessories\Entertainment\
  • C:\Far\Addons\Colors\Default Highlighting\backup.exe C:\Far\Addons\Colors\Default Highlighting\
  • %ALLUSERSPROFILE%\Documents\My Music\backup.exe %ALLUSERSPROFILE%\Documents\My Music\
  • C:\Far\Addons\Colors\Custom Highlighting\backup.exe C:\Far\Addons\Colors\Custom Highlighting\
  • %HOMEPATH%\Start Menu\Programs\Accessories\Accessibility\backup.exe %HOMEPATH%\Start Menu\Programs\Accessories\Accessibility\
  • %ALLUSERSPROFILE%\Documents\My Music\Sample Music\System Restore.exe %ALLUSERSPROFILE%\Documents\My Music\Sample Music\
  • %HOMEPATH%\Start Menu\Programs\Startup\backup.exe %HOMEPATH%\Start Menu\Programs\Startup\
  • C:\Far\Addons\Macros\backup.exe C:\Far\Addons\Macros\
  • %ALLUSERSPROFILE%\Documents\My Music\My Playlists\backup.exe %ALLUSERSPROFILE%\Documents\My Music\My Playlists\
  • %HOMEPATH%\Start Menu\Programs\Administrative Tools\backup.exe %HOMEPATH%\Start Menu\Programs\Administrative Tools\
Modifies settings of Windows Explorer:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFolderOptions' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
Hides the following processes:
Modifies file system :
Creates the following files:
  • %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Accessibility\backup.exe
  • %CommonProgramFiles%\Microsoft Shared\DW\backup.exe
  • C:\Far\Addons\Tables\Cyrillic\E-Mail Double Conversion\backup.exe
  • %CommonProgramFiles%\Microsoft Shared\DAO\backup.exe
  • C:\Far\PlugDoc\Examples\Editor\Align\backup.exe
  • C:\Far\Plugins\backup.exe
  • %PROGRAM_FILES%\ComPlus Applications\backup.exe
  • %CommonProgramFiles%\Microsoft Shared\DW\1025\backup.exe
  • C:\Far\Addons\XLat\backup.exe
  • C:\Far\PlugDoc\Headers.c\data.exe
  • C:\Far\PlugDoc\Examples\Editor\AutoWrap\backup.exe
  • C:\Far\Addons\Tables\Central European\backup.exe
  • %ALLUSERSPROFILE%\Start Menu\Programs\backup.exe
  • C:\Far\PlugDoc\Examples\Compare\backup.exe
  • %CommonProgramFiles%\backup.exe
  • %ALLUSERSPROFILE%\Documents\My Pictures\backup.exe
  • %ALLUSERSPROFILE%\Documents\My Pictures\Sample Pictures\backup.exe
  • %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\backup.exe
  • %ALLUSERSPROFILE%\Documents\My Videos\backup.exe
  • C:\Far\Addons\Tables\Cyrillic\backup.exe
  • %CommonProgramFiles%\Microsoft Shared\backup.exe
  • C:\Far\PlugDoc\Examples\Editor\System Restore.exe
  • C:\Far\Addons\Tables\Hebrew\backup.exe
  • C:\Far\Plugins\ascii\src\backup.exe
  • C:\Far\PlugDoc\Examples\FileCase\System Restore.exe
  • %CommonProgramFiles%\Microsoft Shared\MSInfo\backup.exe
  • %CommonProgramFiles%\Microsoft Shared\DW\1028\backup.exe
  • %CommonProgramFiles%\MSSoap\Binaries\backup.exe
  • %ALLUSERSPROFILE%\Start Menu\Programs\Games\backup.exe
  • %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\System Tools\backup.exe
  • %CommonProgramFiles%\Microsoft Shared\DW\1031\backup.exe
  • C:\Far\PlugDoc\Examples\Editor\DrawLine\backup.exe
  • %PROGRAM_FILES%\FireFox\chrome\backup.exe
  • %WINDIR%\backup.exe
  • C:\Far\PlugDoc\Examples\FARCmds\backup.exe
  • C:\Far\PlugDoc\Headers.pas\backup.exe
  • %CommonProgramFiles%\MSSoap\backup.exe
  • %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Communications\backup.exe
  • C:\Far\Plugins\ascii\backup.exe
  • C:\Far\Addons\XLat\Russian\backup.exe
  • C:\Far\Addons\Tables\Western European\backup.exe
  • %ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Entertainment\backup.exe
  • C:\Far\PlugDoc\Examples\Editor\Brackets\backup.exe
  • %ALLUSERSPROFILE%\Start Menu\Programs\Administrative Tools\backup.exe
  • %PROGRAM_FILES%\FireFox\data.exe
  • %ALLUSERSPROFILE%\Start Menu\backup.exe
  • %HOMEPATH%\My Documents\My Music\backup.exe
  • C:\Far\backup.exe
  • <Current directory>\<Virus name>.zip
  • %HOMEPATH%\My Documents\backup.exe
  • %HOMEPATH%\My Documents\Downloads\backup.exe
  • %HOMEPATH%\My Documents\My Pictures\backup.exe
  • C:\Far\Addons\Archivers\backup.exe
  • %HOMEPATH%\Start Menu\Programs\backup.exe
  • %ALLUSERSPROFILE%\backup.exe
  • C:\Far\Addons\backup.exe
  • %HOMEPATH%\Start Menu\backup.exe
  • <Current directory>\<Virus name>.dat
  • C:\backup.exe
  • <Current directory>\K2a02832
  • <Current directory>\System Restore.exe
  • <Current directory>\temp.zip
  • C:\Documents and Settings\backup.exe
  • %HOMEPATH%\Favorites\backup.exe
  • %HOMEPATH%\Favorites\Links\backup.exe
  • %HOMEPATH%\Desktop\backup.exe
  • %HOMEPATH%\System Restore.exe
  • %HOMEPATH%\Cookies\backup.exe
  • %ALLUSERSPROFILE%\Desktop\backup.exe
  • <Auxiliary element>
  • C:\Far\PlugDoc\backup.exe
  • %ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\backup.exe
  • %ALLUSERSPROFILE%\Documents\My Music\Sample Music\System Restore.exe
  • C:\Far\Addons\SetUp\backup.exe
  • C:\Far\Addons\Shell\data.exe
  • C:\Far\PlugDoc\Examples\backup.exe
  • C:\Far\Addons\Tables\backup.exe
  • %ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\000D7521\data.exe
  • %ALLUSERSPROFILE%\Favorites\backup.exe
  • %PROGRAM_FILES%\backup.exe
  • C:\Far\Addons\Colors\Custom Highlighting\backup.exe
  • %HOMEPATH%\Start Menu\Programs\Accessories\Accessibility\backup.exe
  • %ALLUSERSPROFILE%\Documents\backup.exe
  • C:\Far\Addons\Colors\backup.exe
  • %HOMEPATH%\Start Menu\Programs\Accessories\System Restore.exe
  • %ALLUSERSPROFILE%\Documents\My Music\backup.exe
  • %HOMEPATH%\Start Menu\Programs\Administrative Tools\backup.exe
  • C:\Far\Addons\Macros\backup.exe
  • %ALLUSERSPROFILE%\Documents\My Music\My Playlists\backup.exe
  • %HOMEPATH%\Start Menu\Programs\Accessories\Entertainment\backup.exe
  • C:\Far\Addons\Colors\Default Highlighting\backup.exe
Sets the 'hidden' attribute to the following files:
  • <Current directory>\<Virus name>.zip
  • <Current directory>\temp.zip
Deletes the following files:
  • <Current directory>\<Virus name>.dat
  • <Current directory>\temp.zip
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'ExploreWClass' WindowName: ''
  • ClassName: 'CabinetWClass' 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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  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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Doctor Web is a Russian cybersecurity company focused on threat detection, prevention and response technologies.