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Win32.HLLW.Autoruner.52843
Added to the Dr.Web virus database:
2011-06-29
Virus description added:
2020-06-16
Technical Information
To ensure autorun and distribution
Modifies the following registry keys
[<HKLM>\Software\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "%APPDATA%\lsass.exe"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\lsass.exe"'
[<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\lsass.exe"'
Creates the following files on removable media
<Drive name for removable media>:\system.exe
<Drive name for removable media>:\autorun.inf
Malicious functions
Executes the following
'%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram program = %APPDATA%\lsass.exename = Nero mode = ENABLE
Modifies file system
Creates the following files
%TEMP%\anopefilusinstallations.exe
%APPDATA%\lsass.exe
Sets the 'hidden' attribute to the following files
%APPDATA%\lsass.exe
<Drive name for removable media>:\system.exe
<Drive name for removable media>:\autorun.inf
Deletes the following files
%TEMP%\anopefilusinstallations.exe
Miscellaneous
Searches for the following windows
ClassName: '' WindowName: 'HB'
Creates and executes the following
'%TEMP%\anopefilusinstallations.exe'
'%APPDATA%\lsass.exe' /d %TEMP%\AnopefilusInstallations.exe
'%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram program = %APPDATA%\lsass.exename = Nero mode = ENABLE' (with hidden window)
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