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Win32.HLLW.Autoruner1.30353

Added to the Dr.Web virus database: 2012-11-26

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'chpk.exe' = 'C:/WINDOWS/system32/chpk.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\CHANDU_PANKAJ.exe
  • <Drive name for removable media>:\explr.bat
Malicious functions:
Executes the following:
  • <SYSTEM32>\attrib.exe +h +s Autorun.inf
  • <SYSTEM32>\attrib.exe +h +s explr.bat
  • %WINDIR%\regedit.exe /S a.REG
  • <SYSTEM32>\attrib.exe -h -s chpk.exe
  • <SYSTEM32>\attrib.exe -h -s Autorun.inf
  • <SYSTEM32>\attrib.exe +h +s chpk.exe
Modifies file system :
Creates the following files:
  • C:\CHANDU_PANKAJ.exe
  • C:\autorun.inf
  • C:\a.reg
  • %TEMP%\~1.bat
  • <LS_APPDATA>\CHANDU_PANKAJ.exe
  • C:\explr.bat
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\explr.bat
  • C:\explr.bat
  • %TEMP%\~1.bat
  • C:\autorun.inf
Deletes the following files:
  • C:\a.reg
Miscellaneous:
Searches for the following windows:
  • ClassName: 'RegEdit_RegEdit' WindowName: ''