Win32.HLLW.Autoruner1.35640
Added to the Dr.Web virus database:
2013-04-25
Virus description added:
2013-05-01
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe,SVCHOTS.Exe'
Creates the following files on removable media:
- <Drive name for removable media>:\Autorun.Inf
Malicious functions:
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'Nofind' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'Nofolderoptions' = '00000001'
Forces autoplay for removable media.
Modifies file system :
Creates the following files:
- C:\Autorun.Inf
- <SYSTEM32>\autorun.inf
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Autorun.Inf
- C:\Autorun.Inf
- <SYSTEM32>\autorun.inf
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
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