In a bowl, combine soy sauce, gochujang, honey, sesame oil, garlic powder, onion powder, salt, and black pepper.
Add the steak cubes and toss to coat evenly; marinate for at least 30 minutes or up to 2 hours for deeper flavor.
Heat a skillet or grill pan over medium-high heat.
Cook the steak cubes for 3 to 4 minutes per side until they reach your desired doneness.
Remove the steak from heat and let it rest for a few minutes.
In a small bowl, whisk together mayonnaise, sour cream, sriracha, salt, and black pepper until smooth; adjust seasoning to taste.
Place a scoop of cooked rice into each serving bowl.
Top the rice with steak cubes and drizzle the spicy cream sauce over the top.