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Win32.HLLW.Autoruner1.63847

Added to the Dr.Web virus database: 2013-12-21

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'c27b0f31b434cf96e89ad933a3520d3a' = '"%HOMEPATH%\tset.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'c27b0f31b434cf96e89ad933a3520d3a' = '"%HOMEPATH%\tset.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\c27b0f31b434cf96e89ad933a3520d3a.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\tset.exe' = '%HOMEPATH%\tset.exe:*:Enabled:tset.exe'
Creates and executes the following:
  • '%HOMEPATH%\tset.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\tset.exe" "tset.exe" ENABLE
Modifies file system :
Creates the following files:
  • %HOMEPATH%\tset.exe
Network activity:
Connects to:
  • 'no####to.zapto.org':5552
UDP:
  • DNS ASK no####to.zapto.org
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'