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Win32.HLLW.Autoruner1.44409
Added to the Dr.Web virus database:
2013-06-28
Virus description added:
2013-06-28
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
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:
'wh##.amung.us':80
'cl###.#s1.dnsdynnet.com':80
TCP:
HTTP GET requests:
wh##.amung.us/swidget/78ejo1rdbrrt
cl###.#s1.dnsdynnet.com/
UDP:
DNS ASK wh##.amung.us
DNS ASK cl###.#s1.dnsdynnet.com
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