Win32.HLLW.Autoruner2.28841
Added to the Dr.Web virus database:
2017-07-25
Virus description added:
2017-07-25
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,,%ProgramFiles%\Microsoft\Windowsupdate.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
Malicious functions:
Executes the following:
- '<SYSTEM32>\svchost.exe'
- '%ProgramFiles%\Microsoft\Windowsupdate.exe'
- '<Current directory>\<LOADLIB>Srv.exe'
Injects code into
the following system processes:
Modifies file system:
Creates the following files:
- %ProgramFiles%\Microsoft\Windowsupdate.exe
- <Current directory>\<LOADLIB>Srv.exe
Sets the 'hidden' attribute to the following files:
- %ProgramFiles%\Microsoft\Windowsupdate.exe
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