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Win32.HLLW.Autoruner1.8375
Added to the Dr.Web virus database:
2011-12-20
Virus description added:
2011-12-20
Technical Information
To ensure autorun and distribution:
Creates the following files on removable media:
<Drive name for removable media>:\AUTORUN.INF
<Drive name for removable media>:\msdll.exe
Malicious functions:
Executes the following:
<SYSTEM32>\reg.exe add "HKCR\Directory\shell\LEOPEN" /ve /d Ouvrir /F
<SYSTEM32>\reg.exe add "HKCR\Directory\shell\LEOPEN\command" /ve /d "%WINDIR%\ms1rep0.exe ""%1""" /F
<SYSTEM32>\reg.exe add "HKEY_CLASSES_ROOT\Directory\shell" /ve /d LEOPEN /F
<SYSTEM32>\reg.exe add "HKCU\Software\Microsoft\Windows\CurrentVersion\policies\Explorer\Run" /v msdll /t reg_sz /d "%WINDIR%\ms1dll0.exe" /f
<SYSTEM32>\reg.exe add "HKCU\Software\Microsoft\Windows\CurrentVersion\policies\Explorer\Run" /v mssky /t reg_sz /d "www.dz####.sitew.com" /f
Modifies file system :
Creates the following files:
%WINDIR%\ms1rep0.exe
C:\msdll.exe
C:\AUTORUN.INF
%WINDIR%\ms1dll0.exe
<LS_APPDATA>\MS1REP0.OK
<LS_APPDATA>\AUTORUN.OK
%TEMP%\a75591.bat
Sets the 'hidden' attribute to the following files:
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OK