Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '6256bc381231bf33041bfcaeb4e9caab' = '"%WINDIR%\Rundll64.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '6256bc381231bf33041bfcaeb4e9caab' = '"%WINDIR%\Rundll64.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\6256bc381231bf33041bfcaeb4e9caab.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\Rundll64.exe' = '%WINDIR%\Rundll64.exe:*:Enabled:Rundll64.exe'
Creates and executes the following:
- '%WINDIR%\Rundll64.exe'
- '%HOMEPATH%\Local Settings\Tempserver.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%WINDIR%\Rundll64.exe" "Rundll64.exe" ENABLE
Modifies file system :
Creates the following files:
- %WINDIR%\Rundll64.exe
- %HOMEPATH%\Local Settings\Tempserver.exe
Network activity:
Connects to:
- 'sn####w.no-ip.org':5552
UDP:
- DNS ASK Sn####w.no-ip.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'