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Added to the Dr.Web virus database: 2014-07-17

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'starmux.exe' = '"%APPDATA%\starmux.exe"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'starmux.exe' = '"%APPDATA%\starmux.exe"'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\starmux.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\starmux.exe' = '%APPDATA%\starmux.exe:*:Enabled:starmux.exe'
Creates and executes the following:
  • '%APPDATA%\starmux.exe' "del" <Full path to virus>
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\starmux.exe" "starmux.exe" ENABLE
Modifies file system :
Creates the following files:
  • %APPDATA%\starmux.exe
  • %APPDATA%\starmux.exe.ini
Network activity:
Connects to:
  • '':8822
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'
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