Win32.HLLW.Autoruner.47856
Added to the Dr.Web virus database:
2011-04-18
Virus description added:
2012-01-25
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '<Virus name>.exe' = '<Full path to virus>'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\rpYLf.exe
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\rpYLf.exe
Malicious functions:
Executes the following:
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\CSC1.tmp"
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\csc.exe /noconfig /fullpaths @"%TEMP%\cdavesvn.cmdline"
Modifies file system :
Creates the following files:
- %TEMP%\CSC1.tmp
- %TEMP%\RES2.tmp
- %TEMP%\cdavesvn.dll
- %TEMP%\cdavesvn.0.cs
- %TEMP%\cdavesvn.cmdline
- %TEMP%\cdavesvn.out
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\rpYLf.exe
Deletes the following files:
- %TEMP%\cdavesvn.0.cs
- %TEMP%\cdavesvn.out
- %TEMP%\cdavesvn.dll
- %TEMP%\RES2.tmp
- %TEMP%\CSC1.tmp
- %TEMP%\cdavesvn.cmdline
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