Exclamation Square icon

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24"><g fill="none" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M11.958 7.563v6.166"/><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 17.139h-.009"/><rect width="18.5" height="18.5" x="2.75" y="2.75" stroke-width="1.5" rx="6"/></g></svg>