diff --git a/builder/virtualbox/iso/builder.go b/builder/virtualbox/iso/builder.go
index c82c435e0..ba2507ef1 100644
--- a/builder/virtualbox/iso/builder.go
+++ b/builder/virtualbox/iso/builder.go
@@ -52,6 +52,14 @@ type Config struct {
 	// When set to bios, the firmare is BIOS. This is the default.
 	// When set to efi, the firmare is EFI.
 	Firmware string `mapstructure:"firmware" required:"false"`
+	// Nested virtualization: false or true.
+	// When set to true, nested virtualisation (VT-x/AMD-V) is enabled.
+	// When set to false, nested virtualisation is disabled. This is the default.
+	NestedVirt bool `mapstructure:"nested_virt" required:"false"`
+	// RTC time base: UTC or local.
+	// When set to true, the RTC is set as UTC time.
+	// When set to false, the RTC is set as local time. This is the default.
+	RTCTimeBase string `mapstructure:"rtc_time_base" required:"false"`
 	// The size, in megabytes, of the hard disk to create for the VM. By
 	// default, this is 40000 (about 40 GB).
 	DiskSize uint `mapstructure:"disk_size" required:"false"`
@@ -212,6 +220,17 @@ func (b *Builder) Prepare(raws ...interface{}) ([]string, []string, error) {
 			errs, errors.New("firmware can only be bios or efi"))
 	}
 
+	if b.config.RTCTimeBase == "" {
+		b.config.RTCTimeBase = "local"
+	}
+	switch b.config.RTCTimeBase {
+	case "UTC", "local":
+		// do nothing
+	default:
+		errs = packersdk.MultiErrorAppend(
+			errs, errors.New("rtc_time_base can only be UTC or local"))
+	}
+
 	if b.config.DiskSize == 0 {
 		b.config.DiskSize = 40000
 	}
diff --git a/builder/virtualbox/iso/step_create_vm.go b/builder/virtualbox/iso/step_create_vm.go
index bcef33a64..f0f9c4f27 100644
--- a/builder/virtualbox/iso/step_create_vm.go
+++ b/builder/virtualbox/iso/step_create_vm.go
@@ -26,7 +26,7 @@ func (s *stepCreateVM) Run(ctx context.Context, state multistep.StateBag) multis
 
 	name := config.VMName
 
-	commands := make([][]string, 10)
+	commands := make([][]string, 12)
 	commands[0] = []string{
 		"createvm", "--name", name,
 		"--ostype", config.GuestOSType, "--register",
@@ -60,6 +60,16 @@ func (s *stepCreateVM) Run(ctx context.Context, state multistep.StateBag) multis
 		"--nictype7", config.NICType,
 		"--nictype8", config.NICType}
 	commands[9] = []string{"modifyvm", name, "--graphicscontroller", config.GfxController}
+	if config.RTCTimeBase == "UTC" {
+		commands[10] = []string{"modifyvm", name, "--rtcuseutc", "on"}
+	} else {
+		commands[10] = []string{"modifyvm", name, "--rtcuseutc", "off"}
+	}
+	if config.NestedVirt == true {
+		commands[11] = []string{"modifyvm", name, "--nested-hw-virt", "on"}
+	} else {
+		commands[11] = []string{"modifyvm", name, "--nested-hw-virt", "off"}
+	}
 
 	ui.Say("Creating virtual machine...")
 	for _, command := range commands {