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Win32.HLLW.Autoruner.54779

Added to the Dr.Web virus database: 2011-07-21

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServicesOnce] 'Messenger' = '%APPDATA%\ieSecurity.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Messenger' = '%APPDATA%\ieSecurity.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\RunOnce] 'Messenger' = '%APPDATA%\ieSecurity.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Messenger' = '%APPDATA%\ieSecurity.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'Messenger' = '%APPDATA%\ieSecurity.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices] 'Messenger' = '%APPDATA%\ieSecurity.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\explorer.exe
Malicious functions:
Creates and executes the following:
  • %APPDATA%\ieSecurity.exe 
Searches for windows to
detect analytical utilities:
  • ClassName: '' WindowName: 'Registry Monitor - Sysinternals: www.siliconrealms.com'
  • ClassName: '' WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
Modifies file system :
Creates the following files:
  • %APPDATA%\ieSecurity.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\explorer.exe
  • %APPDATA%\ieSecurity.exe
Network activity:
Connects to:
  • 'ir#.#bjects.net':6667
  • '<Private IP address>':445
  • '<Private IP address>':135
UDP:
  • DNS ASK ir#.#bjects.net
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: '' WindowName: 'OllyDbg'