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Win32.HLLW.Autoruner.60606

Added to the Dr.Web virus database: 2011-09-30

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Update System' = '%APPDATA%\hidserv.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Update System' = '%APPDATA%\hidserv.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '<Virus name>' = '%APPDATA%\windows systems cleaners.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'hidserv' = '%APPDATA%\windows systems cleaners.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\AEXRGYH\DFG-2352-26235-2322322-624621221-2622255\w89e85t5.exe
  • <Drive name for removable media>:\AEXRGYH\DFG-2352-26235-2322322-624621221-2622255\Desktop.ini
Malicious functions:
Creates and executes the following:
  • %APPDATA%\hidserv.exe 
Modifies file system :
Creates the following files:
  • %TEMP%\google_cache2.tmp
  • %APPDATA%\hidserv.exe
  • %APPDATA%\windows systems cleaners.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\AEXRGYH\DFG-2352-26235-2322322-624621221-2622255\w89e85t5.exe
  • %APPDATA%\hidserv.exe
Network activity:
Connects to:
  • 'ph####a.dyndns.info':6667
UDP:
  • DNS ASK ph####a.dyndns.info
  • '10.#.1.1':1035
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: '' WindowName: 'BitDefender Firewall Alert'
  • ClassName: '' WindowName: 'Windows Security Alert'