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Win32.HLLW.Autoruner.49527

Added to the Dr.Web virus database: 2011-05-13

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'sysconfig32.exe' = '"%APPDATA%\{%USERNAME%-we908f9we8hg}\sysconfig32.exe"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'sysconfig32.exe' = '"%APPDATA%\{%USERNAME%-we908f9we8hg}\sysconfig32.exe"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'GoogleApp' = '%APPDATA%\GoogleApp\GoogleApp.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\{%USERNAME%-we908f9we8hg}\sysconfig32.exe
Malicious functions:
Creates and executes the following:
  • %APPDATA%\{%USERNAME%-we908f9we8hg}\sysconfig32.exe 
  • %APPDATA%\GoogleApp\GoogleApp.exe 
Executes the following:
  • <SYSTEM32>\reg.exe ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "GoogleApp" /t REG_SZ /d "%APPDATA%\GoogleApp\GoogleApp.exe" /f
  • <SYSTEM32>\cmd.exe /c ""%TEMP%\AARrE.bat" "
Modifies file system :
Creates the following files:
  • %APPDATA%\{%USERNAME%-we908f9we8hg}\sysconfig32.exe
  • %APPDATA%\{%USERNAME%-we908f9we8hg}\sysinfo_we908f9we8hg.inf
  • %TEMP%\AARrE.bat
  • %APPDATA%\GoogleApp\GoogleApp.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\{%USERNAME%-we908f9we8hg}\sysconfig32.exe
  • %APPDATA%\{%USERNAME%-we908f9we8hg}\sysconfig32.exe
Deletes the following files:
  • %TEMP%\AARrE.bat
Network activity:
Connects to:
  • 'ha####irc.no-ip.biz':6666
UDP:
  • DNS ASK ha####irc.no-ip.biz
  • '<Private IP address>':1035
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''