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: ''