Win32.HLLC.SysBoot
Added to the Dr.Web virus database:
2012-03-20
Virus description added:
2012-04-10
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\runServices] 'SystemTra' = '%WINDIR%\SysTra.EXE /SysTra:Kernel32.Dll'
Infects the following executable system files:
- %WINDIR%\sleep.exe
- %WINDIR%\TASKMAN.EXE
- %WINDIR%\twunk_32.exe
- %WINDIR%\sfk.exe
- %WINDIR%\hh.exe
- %WINDIR%\NOTEPAD.EXE
- %WINDIR%\regedit.exe
Substitutes the following executable system files:
- <SYSTEM32>\dllcache\notepad.exe with <SYSTEM32>\dllcache\notepad.exe.new
- <SYSTEM32>\dllcache\hh.exe with <SYSTEM32>\dllcache\hh.exe.new
- <SYSTEM32>\dllcache\regedit.exe with <SYSTEM32>\dllcache\regedit.exe.new
- <SYSTEM32>\dllcache\twunk_32.exe with <SYSTEM32>\dllcache\twunk_32.exe.new
- <SYSTEM32>\dllcache\taskman.exe with <SYSTEM32>\dllcache\taskman.exe.new
- %WINDIR%\NOTEPAD.EXE with %WINDIR%\notepad.exe.new
- %WINDIR%\hh.exe with %WINDIR%\hh.exe.new
- %WINDIR%\regedit.exe with %WINDIR%\regedit.exe.new
- %WINDIR%\twunk_32.exe with %WINDIR%\twunk_32.exe.new
- %WINDIR%\TASKMAN.EXE with %WINDIR%\taskman.exe.new
Modifies file system :
Creates the following files:
- %WINDIR%\twunk_16.exe.new
- %WINDIR%\twunk_32.exe.new
- %WINDIR%\winhelp.exe.new
- %WINDIR%\notepad.exe.new
- %WINDIR%\regedit.exe.new
- %WINDIR%\taskman.exe.new
- <SYSTEM32>\dllcache\hh.exe.new
- <SYSTEM32>\dllcache\twunk_16.exe.new
- <SYSTEM32>\dllcache\twunk_32.exe.new
- <SYSTEM32>\dllcache\winhelp.exe.new
- <SYSTEM32>\dllcache\notepad.exe.new
- <SYSTEM32>\dllcache\regedit.exe.new
- <SYSTEM32>\dllcache\taskman.exe.new
- %WINDIR%\hh.exe.new
- %WINDIR%\explorer.ZMX
- %WINDIR%\hh.ZMX
- %WINDIR%\NOTEPAD.ZMX
- C:\SysBoot.EXE
- C:\AUTORUN.INF
- %WINDIR%\SYSTRA.EXE
- %WINDIR%\regedit.ZMX
- %WINDIR%\twunk_16.ZMX
- %WINDIR%\twunk_32.ZMX
- %WINDIR%\winhelp.ZMX
- %WINDIR%\sfk.ZMX
- %WINDIR%\sleep.ZMX
- %WINDIR%\TASKMAN.ZMX
Sets the 'hidden' attribute to the following files:
- %WINDIR%\TASKMAN.ZMX
- %WINDIR%\sleep.ZMX
- %WINDIR%\sfk.ZMX
- %WINDIR%\winhelp.ZMX
- %WINDIR%\twunk_32.ZMX
- %WINDIR%\twunk_16.ZMX
- %WINDIR%\explorer.ZMX
- C:\AUTORUN.INF
- C:\SysBoot.EXE
- %WINDIR%\regedit.ZMX
- %WINDIR%\NOTEPAD.ZMX
- %WINDIR%\hh.ZMX
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