Win32.HLLW.Autoruner.56147
Added to the Dr.Web virus database:
2011-08-12
Virus description added:
2011-08-12
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,,<SYSTEM32>\init.exe,'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'windowsmp' = '%WINDIR%\windowsmp.exe'
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\4LLI] 'Start' = '00000002'
Creates the following files on removable media:
- <Drive name for removable media>:\explorer.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
Creates and executes the following:
Executes the following:
- %WINDIR%\explorer.exe <Current directory>
Modifies file system :
Creates the following files:
- C:\autorun.inf
- C:\explorer.exe
- <SYSTEM32>\init.exe
- %WINDIR%\windowsmp.exe
- %WINDIR%\yoos.b
Sets the 'hidden' attribute to the following files:
- C:\explorer.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\explorer.exe
- C:\autorun.inf
- %WINDIR%\windowsmp.exe
- %WINDIR%\yoos.b
- <SYSTEM32>\init.exe
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: ''
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