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Trojan.MulDrop13.3704

Added to the Dr.Web virus database: 2020-07-12

Virus description added:

Technical Information

Modifies file system
Creates the following files
  • %TEMP%\ytmp\tmp42379.bat
  • %TEMP%\ytmp\tmp45579.exe
  • nul
Deletes the following files
  • %TEMP%\ytmp\tmp45579.exe
Deletes itself.
Miscellaneous
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c if not exist "%TEMP%\afolder" mkdir "%TEMP%\afolder"
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Recent Templates" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Recent Templates" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Shape Gallery\History" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Shape Gallery\History" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Brother Industries, Ltd.\P-touch Editor\5.1\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Brother Industries, Ltd.\P-touch Editor\5.1\Recent File List Database" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Brother Industries, Ltd.\P-touch Editor\5.1\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Brother Industries, Ltd.\P-touch Editor\5.1\Recent File List Database" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Avery Dennison\DesignPro 5.5\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Avery Dennison\DesignPro 5.5\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Adobe\Adobe Acrobat\10.0\AVGeneral\cRecentFiles" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Adobe\Adobe Acrobat\10.0\AVGeneral\cRecentFiles" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Camera Bits, Inc.\Photo Mechanic\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Camera Bits, Inc.\Photo Mechanic\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\Paint\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\Paint\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\Wordpad\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\Wordpad\Recent File List" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Nico Mak Computing\WinZip\mru\archives" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Nico Mak Computing\WinZip\mru\archives" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\WordWheelQuery" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\WordWheelQuery" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Adobe\MediaBrowser\MRU\Photoshop\FileList" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Adobe\MediaBrowser\MRU\Photoshop\FileList" /f
  • '%WINDIR%\syswow64\cmd.exe' /c del "Adobe Photoshop X64 CS5 Prefs.psp"
  • '%WINDIR%\syswow64\cmd.exe' /c del "NonExportableSettings.xml"
  • '%WINDIR%\syswow64\ipconfig.exe' /flushdns
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /v "NewDocMeasurementUnit" /t REG_SZ /d 2 /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\UserAssist" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /v "MyShapesPath" /t REG_SZ /d "C:\Users\Preroll\Documents\My Shapes" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /v "FormatToClipboard" /t REG_SZ /d 11 /f
  • '%WINDIR%\syswow64\cmd.exe' /c if not exist "%TEMP%\ytmp" mkdir "%TEMP%\ytmp"
  • '%WINDIR%\syswow64\cmd.exe' /c attrib +h %TEMP%\ytmp
  • '%WINDIR%\syswow64\attrib.exe' +h %TEMP%\ytmp
  • '%WINDIR%\syswow64\cmd.exe' /c cls
  • '%WINDIR%\syswow64\cmd.exe' /c if exist "%TEMP%\ytmp\tmp42379.bat" del "%TEMP%\ytmp\tmp42379.bat"
  • '%WINDIR%\syswow64\cmd.exe' /c if exist "%TEMP%\ytmp\tmp45579.exe" del "%TEMP%\ytmp\tmp45579.exe"
  • '%WINDIR%\syswow64\cmd.exe' /c %TEMP%\ytmp\tmp42379.bat "<Full path to file>"
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\File MRU" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Place MRU" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\File MRU" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Place MRU" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\File MRU" /v "Quick Access Display" /t REG_DWORD /d 0 /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Place MRU" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\File MRU" /v "Quick Access Display" /t REG_DWORD /d 0 /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Place MRU" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Security\Trusted Documents\TrustRecords" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Security\Trusted Documents\TrustRecords" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Recent Templates" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Recent Templates" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Recent Templates" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Recent Templates" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /v "ConfigChangeID" /t REG_DWORD /d 698229 /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /v "CustomMenusFile" /t REG_SZ /d custom12.vsu /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /v "CustomToolbarsFile" /t REG_SZ /d custom12.vsu /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /v "FavoritesStencilName" /t REG_SZ /d Favorites.vss /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /v "FirstRun" /t REG_DWORD /d 0 /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application" /v "FramePosition" /t REG_SZ /d "225 225 1075 1665" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\UserAssist" /f

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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