Win32.HLLW.Autoruner1.43381
Added to the Dr.Web virus database:
2013-06-27
Virus description added:
2013-06-27
Technical Information
To ensure autorun and distribution:
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
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
Deletes the following files:
Substitutes the HOSTS file.
Network activity:
Connects to:
- 'cl###.#s1.dnsdynnet.com':80
TCP:
UDP:
- DNS ASK wh##.amung.us
- DNS ASK cl###.#s1.dnsdynnet.com
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