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Win32.HLLW.Autoruner1.17214

Added to the Dr.Web virus database: 2012-06-09

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Microsoft Essentials' = '%TEMP%\taskmgr.exe'
Modifies file system
Creates the following files
  • %TEMP%\hwcpha4j.0.cs
  • %TEMP%\hwcpha4j.cmdline
  • %TEMP%\hwcpha4j.out
  • %TEMP%\csceb41.tmp
  • %TEMP%\reseb42.tmp
  • %TEMP%\ɯȝƀƈƴ.exe
  • %TEMP%\vbc.exe
  • %TEMP%\taskmgr.exe
  • %TEMP%\user2.txt
  • %APPDATA%\userlog.dat
  • %TEMP%\user7
  • %TEMP%\user8
Sets the 'hidden' attribute to the following files
  • %APPDATA%\userlog.dat
Deletes the following files
  • %TEMP%\reseb42.tmp
  • %TEMP%\csceb41.tmp
  • %TEMP%\hwcpha4j.0.cs
  • %TEMP%\hwcpha4j.out
  • %TEMP%\hwcpha4j.cmdline
  • %TEMP%\user2.txt
  • %TEMP%\user8
  • %TEMP%\user7
Substitutes the following files
  • %TEMP%\user8
  • %TEMP%\user7
Network activity
UDP
  • DNS ASK ha####.no-ip.biz
Miscellaneous
Creates and executes the following
  • '%TEMP%\ɯȝƀƈƴ.exe'
  • '%TEMP%\vbc.exe'
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\hwcpha4j.cmdline"' (with hidden window)
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESEB42.tmp" "%TEMP%\CSCEB41.tmp"' (with hidden window)
Executes the following
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\hwcpha4j.cmdline"
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESEB42.tmp" "%TEMP%\CSCEB41.tmp"
  • '%ProgramFiles(x86)%\internet explorer\iexplore.exe'

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