Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{4F477A6F-3DEB-B4B9-BEEB-8BFA5DFBC7DC}] 'StubPath' = '%APPDATA%\hcn\WinDefender.exe'
- [<HKCU>\Software\Microsoft\Active Setup\Installed Components\{4F477A6F-3DEB-B4B9-BEEB-8BFA5DFBC7DC}] 'StubPath' = '%APPDATA%\hcn\WinDefender.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows System' = '%APPDATA%\hcn\WinDefender.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows System' = '%APPDATA%\hcn\WinDefender.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\Diskrun.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\hcn\WinDefender.exe' = '%APPDATA%\hcn\WinDefender.exe:*:Enabled:Windows Messanger'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:Windows Messanger'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
Executes the following:
- <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\hcn\WinDefender.exe" /t REG_SZ /d "%APPDATA%\hcn\WinDefender.exe:*:Enabled:Windows Messanger" /f
- <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "<Full path to virus>" /t REG_SZ /d "<Full path to virus>:*:Enabled:Windows Messanger" /f
- <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
Modifies file system :
Creates the following files:
- C:\Autorun.inf
- %APPDATA%\hcn\systemwindows
- %APPDATA%\hcn\WinDefender.exe
- C:\Diskrun.exe
Sets the 'hidden' attribute to the following files:
- <Full path to virus>
- %APPDATA%\hcn\WinDefender.exe
Network activity:
Connects to:
- 'se#######indows.3utilities.com':3080
- 'ek####.no-ip.info':3080
UDP:
- DNS ASK se#######indows.3utilities.com
- DNS ASK ek####.no-ip.info
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
