Win32.HLLW.Autoruner.58161
Added to the Dr.Web virus database:
2011-09-06
Virus description added:
2011-09-06
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Nero 7' = '<Full path to virus>'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe<Full path to virus>'
Creates the following files on removable media:
- <Drive name for removable media>:\Yahoo!Messenger10.5.1.exe
- <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:
- Command Prompt (CMD)
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoSetTaskbar' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoDrives' = '000001FF'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoViewContextMenu' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
Modifies file system :
Creates the following files:
- C:\Yahoo!Messenger10.5.1.exe
- C:\Autorun.inf
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\Yahoo!Messenger10.5.1.exe
- C:\Autorun.inf
- C:\Yahoo!Messenger10.5.1.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'BUTTON' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
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