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Win32.HLLW.Autoruner.62474

Added to the Dr.Web virus database: 2011-10-07

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'StartKey' = '<SYSTEM32>\setpaths.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'StartKey' = '<SYSTEM32>\setpaths.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{15CDF7EC-751B-46aa-AD69-4005FE080DE8}] 'stubpath' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{15CDF7EC-751B-46aa-AD69-4005FE080DE9}] 'stubpath' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ccSetMgr' = '%ALLUSERSPROFILE%\Application Data\ccSetMgr.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Hkcmds' = '<SYSTEM32>\hkcmds.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Hkcmds' = '<SYSTEM32>\hkcmds.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\AutoRun.inf
  • <Drive name for removable media>:\Recycler\S-1-5-21-5705561107-358453775-6007341644-500\desktop.ini
  • <Drive name for removable media>:\Recycler\S-1-5-21-5705561107-358453775-6007341644-500\~WRL4904.tmp
Malicious functions:
Creates and executes the following:
  • %ALLUSERSPROFILE%\Application Data\services.exe 
  • %ALLUSERSPROFILE%\Application Data\ccSetMgr.exe 
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • %TEMP%\explorer.exe
  • <SYSTEM32>\hkcmds.exe
  • <SYSTEM32>\setpaths.exe
  • %ALLUSERSPROFILE%\Application Data\ccSetMgr.exe
  • %ALLUSERSPROFILE%\Application Data\services.exe
  • %TEMP%\LSASS.EXE
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\Recycler\S-1-5-21-5705561107-358453775-6007341644-500\desktop.ini
  • <Drive name for removable media>:\AutoRun.inf
  • %ALLUSERSPROFILE%\Application Data\services.exe
  • <Drive name for removable media>:\Recycler\S-1-5-21-5705561107-358453775-6007341644-500\~WRL4904.tmp
Deletes the following files:
  • %TEMP%\LSASS.EXE
  • %TEMP%\explorer.exe
Deletes itself.
Network activity:
Connects to:
  • 'ch#####l.chatnook.com':8080
  • 'ch####ail.toh.info':8080
  • 'ch#####l.chatnook.com':443
  • 'ch####ail.toh.info':443
UDP:
  • DNS ASK ch####ail.toh.info
  • DNS ASK ch#####l.chatnook.com
  • '<Private IP address>':1035
  • '<Private IP address>':1034
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''
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