Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'WinXsrvc' = '%APPDATA%\{4831D19D-3EC6-7BC5-2462-913A72E7064B}\WinXsrvc.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Avast_setup-av.exe
- <Drive name for removable media>:\Music.exe
Malicious functions:
Creates and executes the following:
- '%APPDATA%\{4831D19D-3EC6-7BC5-2462-913A72E7064B}\WinXsrvc.exe'
Executes the following:
- '<SYSTEM32>\cmd.exe' /c C:\x.bat
Searches for windows to
detect analytical utilities:
- ClassName: 'OLLYDBG' WindowName: '(null)'
Modifies file system :
Creates the following files:
- %APPDATA%\{4831D19D-3EC6-7BC5-2462-913A72E7064B}\xox.dat
- C:\x.bat
- %APPDATA%\{4831D19D-3EC6-7BC5-2462-913A72E7064B}\WinXsrvc.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Avast_setup-av.exe
Deletes the following files:
- C:\x.bat
Network activity:
Connects to:
- '1j####.no-ip.org':9481
UDP:
- DNS ASK 1j####.no-ip.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
