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Win32.HLLW.Autoruner.49390

Added to the Dr.Web virus database: 2011-05-11

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MyPen' = '<Full path to virus>'
Creates the following files on removable media:
  • <Drive name for removable media>:\Start.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:PenCat'
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Executes the following:
  • <SYSTEM32>\reg.exe ADD hkcu\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v ShowSuperHidden /t REG_DWORD /d 0 /f
  • <SYSTEM32>\reg.exe ADD hkcu\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v SuperHidden /t REG_DWORD /d 0 /f
  • <SYSTEM32>\attrib.exe +r +h +s E:\Start.exe
Modifies file system :
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\Start.exe
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''