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Win32.HLLW.Autoruner.10791

Added to the Dr.Web virus database: 2013-12-18

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '' = 'rundll32.exe "<Drive name for removable media>:\Program files\Tecent\svchost.dll" MicrosoftIE'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '' = 'rundll32.exe "<Drive name for removable media>:\Program files\Tecent\svchost.dll" MicrosoftIE'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] '' = 'rundll32.exe "<Drive name for removable media>:\Program files\Tecent\svchost.dll" MicrosoftIE'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] '' = 'rundll32.exe "<Drive name for removable media>:\Program files\Tecent\svchost.dll" MicrosoftIE'
Creates the following files on removable media:
  • <Drive name for removable media>:\<Virus name>.exe
  • <Drive name for removable media>:\AutoRun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Executes the following:
  • '<SYSTEM32>\rundll32.exe' "<Drive name for removable media>:\Program files\Tecent\svchost.dll" MicrosoftIE
Modifies file system :
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\<Virus name>.exe
  • <Drive name for removable media>:\AutoRun.inf
Network activity:
Connects to:
  • '21#.#08.65.252':80
TCP:
HTTP GET requests:
  • 21#.#08.65.252/chxd/servers.dll
  • 21#.#08.65.252/chxd/svchost.dll
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'Indicator' WindowName: '(null)'