Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '61426f5f5efa6e7c667298316c461cc1' = '"%ALLUSERSPROFILE%\server.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '61426f5f5efa6e7c667298316c461cc1' = '"%ALLUSERSPROFILE%\server.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\61426f5f5efa6e7c667298316c461cc1.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%ALLUSERSPROFILE%\server.exe' = '%ALLUSERSPROFILE%\server.exe:*:Enabled:server.exe'
Creates and executes the following:
- '%ALLUSERSPROFILE%\server.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%ALLUSERSPROFILE%\server.exe" "server.exe" ENABLE
Modifies file system :
Creates the following files:
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
- %ALLUSERSPROFILE%\server.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
Network activity:
Connects to:
- 'hu####ass.no-ip.biz':5553
UDP:
- DNS ASK hu####ass.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
