Build your Windows XP VM using the IDE disk driver and the rtl8139 NIC driver. These are both recognized by default on Windows XP.
qemu-system-x86_64 -m 512M -cpu host -accel kvm -drive file=WinXPLite.qcow2,format=qcow2 -net nic -net user -vga std -rtc base=localtime windows xp lite qcow2 download exclusive
VirtualBox does not natively support QCOW2. Use the QEMU utility to convert it: Build your Windows XP VM using the IDE