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Win32.HLLW.Autoruner.50845

Added to the Dr.Web virus database: 2011-05-31

Virus description added:

Technical Information

Malicious functions
Injects code into
the following user processes:
  • ctfmon.exe
Modifies file system
Creates the following files
  • %APPDATA%\ctfmon.exe
  • %TEMP%\4zorjq0l.0.cs
  • %TEMP%\4zorjq0l.cmdline
  • %TEMP%\4zorjq0l.out
  • %TEMP%\csc4416.tmp
  • %TEMP%\res4417.tmp
  • %TEMP%\4zorjq0l.dll
Deletes the following files
  • %TEMP%\res4417.tmp
  • %TEMP%\csc4416.tmp
  • %TEMP%\4zorjq0l.cmdline
  • %TEMP%\4zorjq0l.dll
  • %TEMP%\4zorjq0l.out
  • %TEMP%\4zorjq0l.0.cs
Network activity
UDP
  • DNS ASK do#####ds.fcuked.me.uk
Miscellaneous
Creates and executes the following
  • '%APPDATA%\ctfmon.exe'
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4417.tmp" "%TEMP%\CSC4416.tmp"' (with hidden window)
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\4zorjq0l.cmdline"' (with hidden window)
Executes the following
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\4zorjq0l.cmdline"
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4417.tmp" "%TEMP%\CSC4416.tmp"

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