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Win32.HLLW.Autoruner2.8633

Added to the Dr.Web virus database: 2014-02-22

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'add5aa680dc8dffaa5956065b67da3a6' = '"%APPDATA%\hacmd.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'add5aa680dc8dffaa5956065b67da3a6' = '"%APPDATA%\hacmd.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\add5aa680dc8dffaa5956065b67da3a6.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\add5aa680dc8dffaa5956065b67da3a6.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\hacmd.exe' = '%APPDATA%\hacmd.exe:*:Enabled:hacmd.exe'
Creates and executes the following:
  • '%APPDATA%\hacmd.exe'
  • '%HOMEPATH%\Local Settings\Tempserver.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\hacmd.exe" "hacmd.exe" ENABLE
Modifies file system :
Creates the following files:
  • %APPDATA%\hacmd.exe
  • %HOMEPATH%\Local Settings\Tempserver.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\add5aa680dc8dffaa5956065b67da3a6.exe
Network activity:
Connects to:
  • 'th####e.no-ip.biz':5552
UDP:
  • DNS ASK th####e.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'