Win32.HLLW.Autoruner1.8727
Added to the Dr.Web virus database:
2011-12-22
Virus description added:
2011-12-23
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'WindowsEngineST' = 'winengST.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices] 'WindowsEngineST' = 'winengST.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'WindowsEngineST' = 'winengST.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\windrive.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>' = '<SYSTEM32>:*:Enabled:winengST'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
Creates and executes the following:
- <SYSTEM32>\winengST.exe 108 "<Full path to virus>"
Modifies file system :
Creates the following files:
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\windrive.exe
- <SYSTEM32>\winengST.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
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