Win32.HLLW.Autoruner.52241
Added to the Dr.Web virus database:
2011-06-22
Virus description added:
2011-06-22
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Classes\JSFile\Shell\Open\Command] '' = '<SYSTEM32>\users.exe "%1" %*'
- [<HKLM>\SOFTWARE\Classes\regfile\shell\open\command] '' = '<SYSTEM32>\users.exe "%1" %*'
- [<HKLM>\SOFTWARE\Classes\VBSFile\Shell\Open\Command] '' = '<SYSTEM32>\users.exe "%1" %*'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'StoreProc' = '%WINDIR%\pchealth\helpctr\MSConfig.exe'
- [<HKLM>\SOFTWARE\Classes\batfile\shell\open\command] '' = '<SYSTEM32>\winflags.scr "%1" %*'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe] 'Debugger' = '<SYSTEM32>\imaps.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'UserServicesProc' = '<SYSTEM32>\users.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "<SYSTEM32>\users.exe"'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'StoreProc' = '<SYSTEM32>\MSConfig.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Taskmgr.exe] 'Debugger' = '<SYSTEM32>\lnkstfb.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ScreenSav' = '%WINDIR%\settings.exe'
Creates or modifies the following files:
- %ALLUSERSPROFILE%\Start Menu\Programs\Startup\HotKeyDrive.exe
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\MickeyMouse.scr
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:
- Command Prompt (CMD)
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
Creates and executes the following:
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFind' = '00000001'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoRun' = '00000001'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFind' = '00000001'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoRun' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000000'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoControlPanel' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoControlPanel' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFolderOptions' = '00000001'
Modifies file system :
Creates the following files:
- <SYSTEM32>\imaps.exe
- <SYSTEM32>\lnkstfb.exe
- <SYSTEM32>\216114.htm
- %WINDIR%\pchealth\helpctr\MSConfig.exe
- C:\autorun.inf
- <SYSTEM32>\users.exe
- C:\BOOTSECT.exe
- %WINDIR%\settings.exe
- <SYSTEM32>\svchosts.exe
- <SYSTEM32>\winflags.scr
Sets the 'hidden' attribute to the following files:
- %ALLUSERSPROFILE%\Start Menu\Programs\Startup\HotKeyDrive.exe
- <SYSTEM32>\lnkstfb.exe
- <SYSTEM32>\216114.htm
- <Drive name for removable media>:\autorun.inf
- C:\autorun.inf
- <SYSTEM32>\users.exe
- C:\BOOTSECT.exe
- %WINDIR%\settings.exe
- <SYSTEM32>\svchosts.exe
- <SYSTEM32>\winflags.scr
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: 'Windows Task Manager'
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '' WindowName: 'Registry Editor'
- ClassName: 'Indicator' WindowName: ''
- ClassName: '' WindowName: 'System Configuration Utility'
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