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Win32.HLLW.Autoruner2.156
Added to the Dr.Web virus database:
2013-12-25
Virus description added:
2013-12-26
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '53b6f6cbe7c28bb1a6deaf6cf4f17fd8' = '"%TEMP%\microsoft.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '53b6f6cbe7c28bb1a6deaf6cf4f17fd8' = '"%TEMP%\microsoft.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\53b6f6cbe7c28bb1a6deaf6cf4f17fd8.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\microsoft.exe' = '%TEMP%\microsoft.exe:*:Enabled:microsoft.exe'
Creates and executes the following:
'%TEMP%\microsoft.exe'
'<LS_APPDATA>BLeJdqbJHv.exe'
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\microsoft.exe" "microsoft.exe" ENABLE
'<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <LS_APPDATA>jHoAwKJ_Es.JPEG
Modifies file system :
Creates the following files:
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
%HOMEPATH%\Recent\Local Settings.lnk
%HOMEPATH%\Recent\Application DatajHoAwKJ_Es.lnk
<LS_APPDATA>BLeJdqbJHv.exe
<LS_APPDATA>jHoAwKJ_Es.JPEG
%TEMP%\microsoft.exe
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: 'Indicator' WindowName: '(null)'
ClassName: 'Shell_TrayWnd' WindowName: '(null)'
ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
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