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Win32.HLLW.Autoruner2.16972
Added to the Dr.Web virus database:
2014-08-20
Virus description added:
2014-08-20
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'a7739beea7c489c1e549fc5663a85700' = '"%WINDIR%\explorerr.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'a7739beea7c489c1e549fc5663a85700' = '"%WINDIR%\explorerr.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\a7739beea7c489c1e549fc5663a85700.exe
%HOMEPATH%\Start Menu\Programs\Startup\Server.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\explorerr.exe' = '%WINDIR%\explorerr.exe:*:Enabled:explorerr.exe'
Creates and executes the following:
'%WINDIR%\explorerr.exe'
'%TEMP%\WindowsApplication1.exe'
'%TEMP%\Server.exe'
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%WINDIR%\explorerr.exe" "explorerr.exe" ENABLE
Modifies file system :
Creates the following files:
%TEMP%\WindowsApplication1.exe
%WINDIR%\explorerr.exe
%TEMP%\aut2.tmp
%TEMP%\aut1.tmp
%TEMP%\Server.exe
Deletes the following files:
%TEMP%\aut2.tmp
%TEMP%\aut1.tmp
Network activity:
Connects to:
UDP:
DNS ASK ha####14c.no-ip.biz
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
ClassName: 'Shell_TrayWnd' WindowName: ''
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