In a large mixing bowl, whisk together the soy sauce, brown sugar, sesame oil, chili garlic sauce, rice vinegar, garlic, ginger, and shallots until well combined.
Add the thinly sliced beef to the marinade, toss to coat, cover, and refrigerate for at least 2 hours or overnight for maximum flavor.
Heat a large skillet or sauté pan over high heat. Add vegetable oil.
Using a slotted spoon, add marinated beef to the pan in batches. Sear quickly on all sides, cooking just until browned. Transfer cooked beef to a plate and continue with remaining meat.
To assemble the bowls, divide the cooked rice among 4 serving bowls.
Top each with beef bulgogi, one fried egg, a scoop of kimchi, and cucumber ribbons.
Serve immediately and enjoy hot.