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Profil

Win32.HLLW.Autoruner1.17692

Added to the Dr.Web virus database: 2012-06-22

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe] 'Debugger' = 'avgvcnt.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = 'ctfmon.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\SYSTEM\Cache-9723590193-0193865940-937593904-1600\usbdevio.exe
  • <Drive name for removable media>:\SYSTEM\Cache-9723590193-0193865940-937593904-1600\Desktop.ini
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
blocks the following features:
  • System Restore (SR)
Creates and executes the following:
  • <SYSTEM32>\avgvcnt.exe
Executes the following:
  • <SYSTEM32>\ipconfig.exe /flushdns
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Terminates or attempts to terminate
the following user processes:
  • MCAGENT.EXE
  • GUARD.EXE
  • fsav32.exe
  • zlclient.exe
  • spidernt.exe
  • nod32.exe
  • bdss.exe
  • bdagent.exe
  • 360tray.exe
  • fsav.exe
  • Drweb32w.exe
  • ClamWin.exe
Hides the following processes:
  • <Full path to virus>
  • <SYSTEM32>\avgvcnt.exe
Modifies file system :
Creates the following files:
  • <SYSTEM32>\avgvcnt.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\SYSTEM\Cache-9723590193-0193865940-937593904-1600\usbdevio.exe
  • <SYSTEM32>\avgvcnt.exe
Deletes itself.
Network activity:
Connects to:
  • 'co##.#rv-adobe.info':8764
  • 're#####.srv-adobe.info':52019
  • 'st#####.srv-adobe.info':6980
  • 'es#####l.srv-adobe.info':9899
  • 're#####.srv-adobe.info':7302
  • 'co##.#rv-adobe.info':5276
  • 're#####.srv-adobe.info':7601
  • 'es#####l.srv-adobe.info':9103
  • 'es#####l.srv-adobe.info':34091
  • 'st#####.srv-adobe.info':31960
  • 'st#####.srv-adobe.info':6501
UDP:
  • DNS ASK st#####.srv-adobe.info
  • DNS ASK co##.#rv-adobe.info
  • DNS ASK es#####l.srv-adobe.info
  • DNS ASK re#####.srv-adobe.info
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''