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Win32.HLLW.Autoruner1.26024

Added to the Dr.Web virus database: 2012-09-18

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Internet explorer' = '<SYSTEM32>\nvshootls.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Services Network' = '%WINDIR%\mnetwork.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Internet system' = '%WINDIR%\intexplorer.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Explorer system32' = '%WINDIR%\gfesd.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows system' = '%WINDIR%\ncvfd.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Internet explorer' = 'system32\nvshootls.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Services Network' = 'mnetwork.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Internet system' = 'intexplorer.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Explorer system32' = 'gfesd.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows system' = 'ncvfd.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\Autorun.inf
Malicious functions:
Creates and executes the following:
  • <Current directory>\gfesd.exe
  • <SYSTEM32>\nvshootls.exe
  • <Current directory>\ncvfd.exe
  • <Current directory>\mnetwork.exe
  • <Current directory>\intexplorer.exe
Modifies file system :
Creates the following files:
  • %WINDIR%\gfesd.exe
  • %WINDIR%\ncvfd.exe
  • %WINDIR%\intexplorer.exe
  • <SYSTEM32>\WinInt32.dll
  • C:\Autorun.inf
  • C:\TimeSheet.exe
  • C:\Sheet.exe
  • <Current directory>\intexplorer.exe
  • <Current directory>\mnetwork.exe
  • <Current directory>\ncvfd.exe
  • %WINDIR%\mnetwork.exe
  • <SYSTEM32>\nvshootls.exe
  • <Current directory>\gfesd.exe
Sets the 'hidden' attribute to the following files:
  • C:\Autorun.inf
  • <Drive name for removable media>:\Autorun.inf
Deletes the following files:
  • %TEMP%\~DFE460.tmp
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''

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