Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Realtek High Definition Audio Driver' = '%APPDATA%\HDAudioDriver.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\setup.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
Creates and executes the following:
- '' (downloaded from the Internet)
Modifies settings of Windows Internet Explorer:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Associations] 'LowRiskFileTypes' = '.exe'
Modifies file system:
Creates the following files:
- %APPDATA%\HDAudioDriver.exe
- C:\setup.exe
- C:\autorun.inf
- %TEMP%\YyLJp0Sq.exe
- %TEMP%\OWfUb7CW.exe
Sets the 'hidden' attribute to the following files:
- %APPDATA%\HDAudioDriver.exe
- C:\autorun.inf
- C:\setup.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\setup.exe
Deletes the following files:
- C:\autorun.inf
- C:\setup.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\setup.exe
- %TEMP%\YyLJp0Sq.exe
- %TEMP%\OWfUb7CW.exe
Substitutes the following files:
- C:\setup.exe
- C:\autorun.inf
- <Drive name for removable media>:\setup.exe
- <Drive name for removable media>:\autorun.inf
- %TEMP%\YyLJp0Sq.exe
Network activity:
Connects to:
- 'wp#d':80
- '5.#.217.69':80
TCP:
HTTP GET requests:
- http://11#.#11.111.1/wpad.dat via wp#d
- http://5.#.217.69/wp-content/plugins/woocommerce/appinstall.exe
- http://5.#.217.69/wp-content/plugins/woocommerce/appinstall2.exe
UDP:
- DNS ASK wp#d
Miscellaneous:
Creates and executes the following:
- '%APPDATA%\HDAudioDriver.exe'
- '%TEMP%\OWfUb7CW.exe'
