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Win32.HLLW.Autoruner1.27557
Added to the Dr.Web virus database:
2012-10-10
Virus description added:
2012-10-18
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'winhelp' = '"%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'winhelp' = '%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe'
[<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{4fz8rk-15aq-16nc-23or4-2ke0fa051515}] 'StubPath' = '"%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe" /lanzateActiveX'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe"'
Creates the following files on removable media:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\ntldr.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
Modifies file system :
Creates the following files:
%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\ntldr.exe
%APPDATA%\Microsoft\Internet Explorer\winhlpsvc.exe
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
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