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Win32.HLLW.Silka.130

Added to the Dr.Web virus database: 2012-11-24

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Firewall' = '%APPDATA%\svchost.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Firewall' = '%APPDATA%\svchost.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\U3Drive\Memorex\drivers.exe
  • <Drive name for removable media>:\U3Drive\Memorex\Desktop.ini
Malicious functions:
Creates and executes the following:
  • %APPDATA%\svchost.exe
Modifies file system :
Creates the following files:
  • %APPDATA%\svchost.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\U3Drive\Memorex\drivers.exe
  • %APPDATA%\svchost.exe
Network activity:
Connects to:
  • 'ns###30.ovh.net':6665
UDP:
  • DNS ASK ns###30.ovh.net
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''