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Win32.HLLW.Autoruner2.3726

Added to the Dr.Web virus database: 2014-01-30

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '4572870c4b4b7ae2bfcf37a9e8570fa5' = '"%APPDATA%\prss-update.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '4572870c4b4b7ae2bfcf37a9e8570fa5' = '"%APPDATA%\prss-update.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\prss-update.exe' = '%APPDATA%\prss-update.exe:*:Enabled:prss-update.exe'
Creates and executes the following:
  • '%APPDATA%\prss-update.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\prss-update.exe" "prss-update.exe" ENABLE
Modifies file system :
Creates the following files:
  • %APPDATA%\prss-update.exe
Network activity:
Connects to:
  • 'ma####rd.no-ip.info':5552
UDP:
  • DNS ASK ma####rd.no-ip.info
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'