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Win32.HLLW.Autoruner2.14888
Added to the Dr.Web virus database:
2014-05-28
Virus description added:
2014-05-29
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'da660b00789a7229cb37ae70d1390fb2' = '"%TEMP%\server.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'da660b00789a7229cb37ae70d1390fb2' = '"%TEMP%\server.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\server.exe' = '%TEMP%\server.exe:*:Enabled:server.exe'
Creates and executes the following:
'%TEMP%\server.exe'
'<LS_APPDATA>iAFZouUzaL.exe'
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\server.exe" "server.exe" ENABLE
'<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <LS_APPDATA>eYIHQfZJXO..jpg
Modifies file system :
Creates the following files:
%TEMP%\server.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
%HOMEPATH%\Recent\Local Settings.lnk
<LS_APPDATA>iAFZouUzaL.exe
<LS_APPDATA>eYIHQfZJXO..jpg
%HOMEPATH%\Recent\Application DataeYIHQfZJXO..lnk
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
Network activity:
Connects to:
'no####724.no-ip.org':5552
UDP:
DNS ASK no####724.no-ip.org
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: '(null)'
ClassName: 'Shell_TrayWnd' WindowName: '(null)'
ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
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