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Profil

Win32.HLLC.Hide.23553

Added to the Dr.Web virus database: 2011-12-20

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates the following files on removable media:
  • <Drive name for removable media>:\Data.exe
  • <Drive name for removable media>:\New Folder.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
Creates and executes the following:
  • <SYSTEM32>\ explorer.exe 
Executes the following:
  • <SYSTEM32>\schtasks.exe /create /sc minute /tn        /tr fGetSpecialFolder(41)"\ explorer.exe"
  • <SYSTEM32>\net1.exe start schedule
  • %WINDIR%\explorer.exe <Virus name>\
  • <SYSTEM32>\schtasks.exe /delete /tn
Modifies file system :
Creates the following files:
  • C:\Far2.exe
  • C:\Documents and Settings.exe
  • C:\<Auxiliary name>.exe
  • <Auxiliary element>
  • %PROGRAM_FILES%.exe
  • <SYSTEM32>\ explorer.exe
  • C:\New Folder.exe
  • <Current directory>.exe
  • C:\Data.exe
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\ explorer.exe
Deletes the following files:
  • %TEMP%\~DF9D42.tmp
Miscellaneous:
Searches for the following windows:
  • ClassName: '' WindowName: ''