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Win32.HLLW.Autoruner2.7112
Added to the Dr.Web virus database:
2014-02-17
Virus description added:
2014-02-17
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'bb6fc667aa7f540aaa8b88b849d3f128' = '"%TEMP%\Windows.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bb6fc667aa7f540aaa8b88b849d3f128' = '"%TEMP%\Windows.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\bb6fc667aa7f540aaa8b88b849d3f128.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\Windows.exe' = '%TEMP%\Windows.exe:*:Enabled:Windows.exe'
Creates and executes the following:
'%WINDIR%\Extracted\winrar_5-01_fr_9632_32.exe'
'%TEMP%\Windows.exe'
'%WINDIR%\Extracted\2.exe'
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\Windows.exe" "Windows.exe" ENABLE
Modifies file system :
Creates the following files:
%TEMP%\Windows.exe
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
%TEMP%\sfx.ini
%WINDIR%\Extracted\2.exe
%WINDIR%\Extracted\winrar_5-01_fr_9632_32.exe
Deletes the following files:
Moves the following files:
from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch
Miscellaneous:
Searches for the following windows:
ClassName: 'Shell_TrayWnd' WindowName: '(null)'
ClassName: 'Indicator' WindowName: '(null)'
ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
ClassName: 'EDIT' WindowName: '(null)'
ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
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