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Win32.HLLW.Autoruner3.2651

Added to the Dr.Web virus database: 2020-10-13

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\Software\Microsoft\Windows\CurrentVersion\Run] 'rundll32_16480_toolbar' = '%TEMP%\425.tmp\Enu.bat'
Changes the following executable system files
  • %WINDIR%\flash_sa.exe
Creates the following files on removable media
  • <Drive name for removable media>:\enu.bat
  • <Drive name for removable media>:\autorun.inf
Modifies file system
Creates the following files
  • %TEMP%\425.tmp\enu.bat
  • %WINDIR%\migration\enu.bat
  • %WINDIR%\modemlogs\enu.bat
  • %WINDIR%\offline
  • %WINDIR%\panther\enu.bat
  • %WINDIR%\pchealth\enu.bat
  • %WINDIR%\performance\enu.bat
  • %WINDIR%\pla\enu.bat
  • %WINDIR%\policydefinitions\enu.bat
  • %WINDIR%\csc\enu.bat
  • %WINDIR%\prefetch\enu.bat
  • %WINDIR%\remotepackages\enu.bat
  • %WINDIR%\resources\enu.bat
  • %WINDIR%\schcache\enu.bat
  • %WINDIR%\schemas\enu.bat
  • %WINDIR%\security\enu.bat
  • %WINDIR%\serviceprofiles\enu.bat
  • %WINDIR%\setup\enu.bat
  • %WINDIR%\shellnew\enu.bat
  • %WINDIR%\logs\enu.bat
  • %WINDIR%\microsoft.net\enu.bat
  • %WINDIR%\livekernelreports\enu.bat
  • %WINDIR%\l2schemas\enu.bat
  • %WINDIR%\inf\enu.bat
  • C:\enu.bat
  • C:\autorun.inf
  • D:\enu.bat
  • D:\autorun.inf
  • <Current directory>\pathhost
  • %WINDIR%\addins\enu.bat
  • %WINDIR%\appcompat\enu.bat
  • %WINDIR%\apppatch\enu.bat
  • %WINDIR%\softwaredistribution\enu.bat
  • %WINDIR%\registration\enu.bat
  • %WINDIR%\branding\enu.bat
  • %WINDIR%\debug\enu.bat
  • %WINDIR%\digitallocker\enu.bat
  • %WINDIR%\downloaded
  • %WINDIR%\ehome\enu.bat
  • %WINDIR%\en-us\enu.bat
  • %WINDIR%\globalization\enu.bat
  • %WINDIR%\help\enu.bat
  • %WINDIR%\ime\enu.bat
  • nul
  • %WINDIR%\cursors\enu.bat
  • %WINDIR%\speech\enu.bat
Miscellaneous
Executes the following
  • '<SYSTEM32>\cmd.exe' /c ""%TEMP%\425.tmp\Enu.bat""
  • '<SYSTEM32>\reg.exe' add "hklm\Software\Microsoft\Windows\CurrentVersion\Run" /v "rundll32_16480_toolbar" /t "REG_SZ" /d "%TEMP%\425.tmp\Enu.bat" /f
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