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Win32.HLLW.Autoruner1.26719

Added to the Dr.Web virus database: 2012-09-22

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe] 'Debugger' = 'CMD /C>null'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\epplauncher.exe] 'Debugger' = 'CMD /C>null'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Media Beta' = '<SYSTEM32>\wmpbv64.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsMpEng.exe] 'Debugger' = 'CMD /C>null'
Creates the following files on removable media:
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\~Control.{645FF040-5081-101B-9F08-00AA002F954E}\cont-s50295813.tx
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List] '<SYSTEM32>\wmpbv64.exe' = '<SYSTEM32>\wmpbv64.exe:*:Enabled:Windows Media Beta'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\wmpbv64.exe' = '<SYSTEM32>\wmpbv64.exe:*:Enabled:Windows Media Beta'
Creates and executes the following:
  • <SYSTEM32>\wmpbv64.exe <Full path to virus>
Executes the following:
  • <SYSTEM32>\sc.exe config OutpostFirewall start= disabled
  • <SYSTEM32>\sc.exe stop OutpostFirewall
  • <SYSTEM32>\sc.exe delete OutpostFirewall
  • <SYSTEM32>\net1.exe stop OutpostFirewall
  • <SYSTEM32>\sc.exe delete ekrn
  • <SYSTEM32>\sc.exe delete NOD32krn
  • <SYSTEM32>\sc.exe config NOD32krn start= disabled
  • <SYSTEM32>\net.exe stop OutpostFirewall
  • <SYSTEM32>\sc.exe config ekrn start= disabled
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Searches for windows to
detect analytical utilities:
  • ClassName: 'PROCMON_WINDOW_CLASS' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
detect programs and games:
  • ClassName: 'gdkWindowToplevel' WindowName: 'The Wireshark Network Analyzer'
Hides the following processes:
  • <Full path to virus>
  • <SYSTEM32>\wmpbv64.exe
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\x3s1[1].zip
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\x0s2[1].txt
  • <SYSTEM32>\wmpbv64.exe
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\wmpbv64.exe
Deletes itself.
Network activity:
Connects to:
  • 'pt###.###el15-c02-as25013.su':80
  • '20#.#1.237.59':80
  • 'any':7895
TCP:
HTTP GET requests:
  • pt###.###el15-c02-as25013.su/css/x3s1.zip
  • 20#.#1.237.59/aspnet_client/ip/x0s2.txt
UDP:
  • DNS ASK na###.###el15-c01-as25013.su
  • DNS ASK pt###.###el15-c02-as25013.su
Miscellaneous:
Searches for the following windows:
  • ClassName: 'TCPViewClass' WindowName: ''
  • ClassName: '#32770' WindowName: 'Regshot 1.8.2'
  • ClassName: 'PROCEXPL' WindowName: ''
  • ClassName: 'CNetmonMainFrame' WindowName: 'Microsoft Network Monitor 3.3'
  • ClassName: 'SmartSniff' WindowName: 'SmartSniff'
  • ClassName: 'CurrPorts' WindowName: 'CurrPorts'