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Profil

Win32.HLLW.Autoruner1.25662

Added to the Dr.Web virus database: 2012-08-25

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'sysBoot' = '<SYSTEM32>\syskernel.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'sysStart' = 'C:\syswin.exe 1'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'sysBoot' = '<SYSTEM32>\syskernel.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'sysStart' = 'C:\syswin.exe 1'
Creates the following files on removable media:
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\syskernel.exe
  • <Drive name for removable media>:\New Folder1.exe
Malicious functions:
Creates and executes the following:
  • C:\sysmgr.exe 3
  • C:\sys32krnl.exe 2
  • C:\syswin.exe 1
Executes the following:
  • <SYSTEM32>\attrib.exe +S +H +R C:\sysmgr.exe
  • <SYSTEM32>\attrib.exe +S +H +R E:\syskernel.exe
  • <SYSTEM32>\attrib.exe +S +H E:\Autorun.inf
  • <SYSTEM32>\attrib.exe +S +H +R <SYSTEM32>\syskernel.exe
  • <SYSTEM32>\attrib.exe +S +H +R C:\syswin.exe
  • <SYSTEM32>\attrib.exe +S +H +R C:\sys32krnl.exe
Modifies file system :
Creates the following files:
  • C:\sys32krnl.exe
  • C:\sysmgr.exe
  • <SYSTEM32>\syskernel.exe
  • C:\syswin.exe
Sets the 'hidden' attribute to the following files:
  • C:\sysmgr.exe
  • <Drive name for removable media>:\syskernel.exe
  • <Drive name for removable media>:\Autorun.inf
  • <SYSTEM32>\syskernel.exe
  • C:\syswin.exe
  • C:\sys32krnl.exe
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''