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Win32.HLLW.Autoruner.54323
Added to the Dr.Web virus database:
2011-07-15
Virus description added:
2011-07-15
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\svchost.exe"'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\svchost.exe"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '<Virus name>.exe' = '%APPDATA%\zxDnuCSts\zxDnuCSts\0.0.0.0\<Virus name>.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "%APPDATA%\svchost.exe"'
Creates the following files on removable media:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\Crisis.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\svchost.exe' = '%APPDATA%\svchost.exe:*:Enabled:CityScape'
Creates and executes the following:
Executes the following:
<SYSTEM32>\netsh.exe firewall add allowedprogram "%APPDATA%\svchost.exe" CityScape Enable
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe
Modifies file system :
Creates the following files:
%APPDATA%\svchost.exe
%APPDATA%\zxDnuCSts\zxDnuCSts\0.0.0.0\<Virus name>.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\Crisis.exe
%APPDATA%\zxDnuCSts\zxDnuCSts\0.0.0.0\<Virus name>.exe
%APPDATA%\svchost.exe
Miscellaneous:
Searches for the following windows:
ClassName: '' WindowName: 'HB'
ClassName: 'Indicator' WindowName: ''
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