Technical Information
To ensure autorun and distribution:
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\services\clr_optimization_v4.0.30319_32] 'Start' = '00000002'
Infects the following executable system files:
- %WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
- %WINDIR%\Microsoft.NET\Framework\v4.0.30319\aspnet_state.exe
Malicious functions:
Executes the following:
- '%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe'
Modifies settings of Windows Internet Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1406' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1609' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2103' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2103' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2103' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1406' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1609' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1406' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2103' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1406' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1609' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1609' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1609' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '2103' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1406' = '00000000'
Modifies file system :
Creates the following files:
- %PROGRAM_FILES%\FireFox\plugin-container.vir
- %PROGRAM_FILES%\FireFox\shlibsign.vir
- %PROGRAM_FILES%\FireFox\mangle.vir
- %PROGRAM_FILES%\FireFox\nsinstall.vir
- %PROGRAM_FILES%\FireFox\updater.vir
- %PROGRAM_FILES%\FireFox\xpt_dump.vir
- %PROGRAM_FILES%\FireFox\xpt_link.vir
- %PROGRAM_FILES%\FireFox\xpcshell.vir
- %PROGRAM_FILES%\FireFox\xpidl.vir
- %PROGRAM_FILES%\FireFox\js.vir
- <Current directory>\1.106e-303u
- <Current directory>\1.10603e-303u
- %WINDIR%\Microsoft.NET\Framework\v4.0.30319\aspnet_state.vir
- %WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.vir
- <Current directory>\1.10606e-303u
- %PROGRAM_FILES%\FireFox\crashreporter.vir
- %PROGRAM_FILES%\FireFox\firefox.vir
- <Current directory>\1.1061e-303u
- C:\Far2\Far.vir
Deletes the following files:
- %PROGRAM_FILES%\FireFox\updater.vir
- %PROGRAM_FILES%\FireFox\shlibsign.vir
- %PROGRAM_FILES%\FireFox\plugin-container.vir
- %PROGRAM_FILES%\FireFox\xpcshell.vir
- %PROGRAM_FILES%\FireFox\xpt_link.vir
- %PROGRAM_FILES%\FireFox\xpt_dump.vir
- %PROGRAM_FILES%\FireFox\xpidl.vir
- %PROGRAM_FILES%\FireFox\nsinstall.vir
- C:\Far2\Far.vir
- %WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.vir
- %WINDIR%\Microsoft.NET\Framework\v4.0.30319\aspnet_state.vir
- %PROGRAM_FILES%\FireFox\crashreporter.vir
- %PROGRAM_FILES%\FireFox\mangle.vir
- %PROGRAM_FILES%\FireFox\js.vir
- %PROGRAM_FILES%\FireFox\firefox.vir