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Win32.HLLW.Autoruner2.4588

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

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '598ec8ae7ea5ed622cab9425e267921d' = '"%TEMP%\System Idle Process.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '598ec8ae7ea5ed622cab9425e267921d' = '"%TEMP%\System Idle Process.exe" ..'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\598ec8ae7ea5ed622cab9425e267921d.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\System Idle Process.exe' = '%TEMP%\System Idle Process.exe:*:Enabled:System Idle Process.exe'
Creates and executes the following:
  • '%TEMP%\System Idle Process.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\System Idle Process.exe" "System Idle Process.exe" ENABLE
Modifies file system :
Creates the following files:
  • %TEMP%\System Idle Process.exe
Network activity:
Connects to:
  • 'ma#####roc2.no-ip.biz':7788
UDP:
  • DNS ASK ma#####roc2.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'