--- /dev/null
+<?php
+
+namespace Drupal\file\Plugin\migrate\field\d7;
+
+use Drupal\file\Plugin\migrate\field\d6\FileField as D6FileField;
+use Drupal\migrate\Plugin\MigrationInterface;
+
+/**
+ * @MigrateField(
+ * id = "file",
+ * core = {7}
+ * )
+ */
+class FileField extends D6FileField {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function processFieldValues(MigrationInterface $migration, $field_name, $data) {
+ $process = [
+ 'plugin' => 'sub_process',
+ 'source' => $field_name,
+ 'process' => [
+ 'target_id' => 'fid',
+ 'display' => 'display',
+ 'description' => 'description',
+ ],
+ ];
+ $migration->mergeProcessOfProperty($field_name, $process);
+ }
+
+}