Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'fc096b2984504b56136a8386c33b3333' = '"%TEMP%\System.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'fc096b2984504b56136a8386c33b3333' = '"%TEMP%\System.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\System.exe' = '%TEMP%\System.exe:*:Enabled:System.exe'
Creates and executes the following:
- '%TEMP%\System.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\System.exe" "System.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
- %TEMP%\System.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:
- 'ka####0008.ddns.net':12
UDP:
- DNS ASK ka####0008.ddns.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'