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Win32.HLLW.Autoruner.52780
Added to the Dr.Web virus database:
2011-06-28
Virus description added:
2011-07-01
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe logic.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe logic.exe'
[<HKLM>\SOFTWARE\Classes\Folder\shell\open\command] '' = 'logic.exe explorer.exe /idlist,%I,%L'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'System Init' = '%ALLUSERSPROFILE%\Application Data\LogicBreaker\logic.exe'
Creates the following files on removable media:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\logic.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
hidden files
file extensions
blocks execution of the following system utilities:
Registry Editor (RegEdit)
Executes the following:
<SYSTEM32>\at.exe 15:00 /interactive /EVERY:m,t,w,th,f,s,su %ALLUSERSPROFILE%\Application Data\LogicBreaker\logic.exe
<SYSTEM32>\at.exe 20:00 /interactive /EVERY:m,t,w,th,f,s,su %ALLUSERSPROFILE%\Application Data\LogicBreaker\logic.exe
<SYSTEM32>\at.exe /delete /yes
<SYSTEM32>\at.exe 10:00 /interactive /EVERY:m,t,w,th,f,s,su <SYSTEM32>\logic.exe
Modifies settings of Windows Explorer:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'DisallowRun' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'DisallowRun' = '00000001'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
<SYSTEM32>\logic.exe
%ALLUSERSPROFILE%\Application Data\LogicBreaker\logic.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\logic.exe
<Drive name for removable media>:\autorun.inf
%ALLUSERSPROFILE%\Application Data\LogicBreaker\logic.exe
<SYSTEM32>\logic.exe
Deletes the following files:
<SYSTEM32>\logic.exe
%ALLUSERSPROFILE%\Application Data\LogicBreaker\logic.exe
<Drive name for removable media>:\logic.exe
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