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Win32.HLLW.Facebook.1661

Added to the Dr.Web virus database: 2012-10-04

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'A-124180290' = '%APPDATA%\A-124180290.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'A-124180290' = '%APPDATA%\A-124180290.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'A-124180290' = '%APPDATA%\A-124180290.exe'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\A-124180290.exe
Malicious functions:
Creates and executes the following:
  • %TEMP%\xblstat.exe 1
Executes the following:
  • <SYSTEM32>\schtasks.exe /CREATE /SC ONLOGON /TN A-124180290 /TR %APPDATA%\A-124180290.exe
  • <SYSTEM32>\cmd.exe /c ""%TEMP%\temp-124180290.bat" "
Modifies file system :
Creates the following files:
  • %APPDATA%\A-124180290.exe
  • %TEMP%\xblstat.exe
  • %TEMP%\temp-124180290.bat
Sets the 'hidden' attribute to the following files:
  • %APPDATA%\A-124180290.exe
  • %HOMEPATH%\Start Menu\Programs\Startup\A-124180290.exe
  • %TEMP%\temp-124180290.bat
Network activity:
Connects to:
  • 'xt####hosting.info':6667
UDP:
  • DNS ASK xt####hosting.info
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''