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Win32.HLLW.Autoruner1.35724

Added to the Dr.Web virus database: 2013-04-26

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Winlogon' = '%WINDIR%\winlogon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Winlogon' = '%WINDIR%\winlogon.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
Creates and executes the following:
  • '%WINDIR%\winlogon.exe'
Modifies file system :
Creates the following files:
  • C:\autorun.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\default2[1].html
  • C:\autorun.inf
  • %WINDIR%\winlogon.exe
  • %WINDIR%\cmd.gdi
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.exe
  • <Drive name for removable media>:\autorun.inf
  • C:\autorun.exe
  • C:\autorun.inf
Network activity:
Connects to:
  • 'in####.powweb.com':80
  • 'localhost':1037
TCP:
HTTP GET requests:
  • in####.powweb.com/default2.html
UDP:
  • DNS ASK in####.powweb.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: 'MS_AutodialMonitor' WindowName: ''
  • ClassName: 'MS_WebcheckMonitor' WindowName: ''
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