Win32.HLLW.Autoruner.53388
Added to the Dr.Web virus database:
2011-07-06
Virus description added:
2011-07-06
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Winupdater' = '<SYSTEM32>\Winupdater.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'UserInit' = '<SYSTEM32>\userinit.exe,<SYSTEM32>\Winupdater.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\RECYCLER\S-1-5-21-1482476501-3352491937-682996330-1013\msexplorer.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
Creates and executes the following:
- <SYSTEM32>\Winupdater.exe
Executes the following:
- <SYSTEM32>\ping.exe 127.0.0.1 -n 5 > NUL
del "%PROGRAM_FILES%\Internet Explorer\iexplore.exe"
- %WINDIR%\explorer.exe
Modifies file system :
Creates the following files:
- <SYSTEM32>\Winupdater.exe
- %TEMP%\YOUTUBEDOWNLOADER.EXE
- %TEMP%\aut1.tmp
- %TEMP%\OTkwNjc1OTE2NjE4O.NDE3Mzk3NzEyMTYwM
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\RECYCLER\S-1-5-21-1482476501-3352491937-682996330-1013\msexplorer.exe
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- %TEMP%\OTkwNjc1OTE2NjE4O.NDE3Mzk3NzEyMTYwM
- %TEMP%\aut1.tmp
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
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