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Profil

Win32.HLLW.Autoruner1.47087

Added to the Dr.Web virus database: 2013-07-19

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\_avp.exe] 'Debugger' = '"%HOMEPATH%\1A617E607B3F6A65\396579.exe"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\.exe] 'Debugger' = '"%HOMEPATH%\1A617E607B3F6A65\396579.exe"'
Creates or modifies the following files:
  • %ALLUSERSPROFILE%\Start Menu\Programs\Startup\Windows Update.exe
  • %HOMEPATH%\Start Menu\Programs\Startup\Windows Anytime Upgrade.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\1A617E607B3F6A65\396579.exe' = '%HOMEPATH%\1A617E607B3F6A65\396579.exe:*:Enabled:@xpsp2res.dll,-53342401'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\1A617E607B3F6A65\396579.exe' = '%HOMEPATH%\1A617E607B3F6A65\396579.exe:*:Enabled:@xpsp2res.dll,-70554750'
  • [<HKLM>\SYSTEM\ControlSet003\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\1A617E607B3F6A65\396579.exe' = '%HOMEPATH%\1A617E607B3F6A65\396579.exe:*:Enabled:@xpsp2res.dll,-28956246'
  • [<HKLM>\SYSTEM\ControlSet002\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\1A617E607B3F6A65\396579.exe' = '%HOMEPATH%\1A617E607B3F6A65\396579.exe:*:Enabled:@xpsp2res.dll,-57951861'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DisableNotifications' = '00000001'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
blocks the following features:
  • User Account Control (UAC)
  • Windows Security Center
Creates and executes the following:
  • '%HOMEPATH%\1A617E607B3F6A65\396579.exe'
  • '%HOMEPATH%\1A617E607B3F6A65\396579.exe' 88E6680F
Executes the following:
  • '<SYSTEM32>\svchost.exe'
Terminates or attempts to terminate
the following system processes:
  • <SYSTEM32>\cmd.exe
  • <SYSTEM32>\ctfmon.exe
the following user processes:
  • NAVAPW32.EXE
  • nod32.exe
  • mpftray.exe
  • fsav32.exe
  • GUARD.EXE
  • opera.exe
  • safari.exe
  • ZONEALARM.EXE
  • outpost.exe
  • zapro.exe
  • fsav.exe
  • AVP.EXE
  • AVP32.EXE
  • AVP.COM
  • AVGCC32.EXE
  • AVGCTRL.EXE
  • ecmd.exe
  • ekrn.exe
  • AVSYNMGR.EXE
  • AVPCC.EXE
  • AVPM.EXE
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Internet Explorer\Download] 'RunInvalidSignatures' = '00000001'
  • [<HKCU>\Software\Microsoft\Internet Explorer\Download] 'CheckExeSignatures' = 'no'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Associations] 'LowRiskFileTypes' = '.exe'
Modifies file system :
Creates the following files:
  • %ALLUSERSPROFILE%\Start Menu\Windows DVD Maker.exe
  • %ALLUSERSPROFILE%\Start Menu\Programs\Windows Media Center.exe
  • %HOMEPATH%\Start Menu\Programs\Internet Explorer.exe
  • %HOMEPATH%\1A617E607B3F6A65\396579.exe
  • %HOMEPATH%\Start Menu\Fax y Escaner de Windows.exe
Network activity:
Connects to:
  • 'cl###.#s1.dnsdynnet.com':80
TCP:
HTTP GET requests:
  • cl###.#s1.dnsdynnet.com/
UDP:
  • DNS ASK wh##.amung.us
  • DNS ASK cl###.#s1.dnsdynnet.com