Installing Virtualbox guest additions

You must use version 4.2.xx or higher of VirtualBox in order to take advantage of the improvements, including compatibility updates, and enhanced stability of both the core application and the Guest Additions.

Installing VirtualBox Guest Additions in Kali Linux

The VirtualBox Guest Additions provide proper mouse and screen integration, as well as folder sharing, with your host operating system. To install them, proceed as follows.

Start up your Kali Linux virtual machine, open a terminal window and issue the following commands.

apt-get update
apt-get install -y virtualbox-guest-x11
reboot