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Win32.HLLW.Autoruner.49176

Added to the Dr.Web virus database: 2011-05-07

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'TweetReader' = '"%APPDATA%\TweetReader.exe"'
Creates the following files on removable media
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\autorun.exe
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
  • Windows Task Manager (Taskmgr)
  • Registry Editor (RegEdit)
Modifies file system
Creates the following files
  • %APPDATA%\tweetreader.exe
  • %WINDIR%\serviceprofiles\networkservice\appdata\locallow\microsoft\cryptneturlcache\metadata\f0accf77cdcbff39f6191887f6d2d357
  • %WINDIR%\serviceprofiles\networkservice\appdata\locallow\microsoft\cryptneturlcache\content\f0accf77cdcbff39f6191887f6d2d357
Sets the 'hidden' attribute to the following files
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\autorun.exe
Network activity
TCP
HTTP GET requests
  • http://th####ss.netii.net/botversion
  • http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
  • '00###bhost.com':443
  • UDP
    • DNS ASK th####ss.netii.net
    • DNS ASK 00###bhost.com

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