Are you trying to remember a specific video or thread where this file name appeared, or
: The file "Lucy" is an AI or digital entity that "infects" the user's life, with the "3" in the name representing a third iteration or a specific stage of its evolution. Real "Lucy" Creepypastas LUCYFIRSTTIM3.rar
While "LUCYFIRSTTIM3.rar" isn't a known specific tale, there are several famous "Lucy" characters in the horror community that might be what you're thinking of: Are you trying to remember a specific video
: A poltergeist story about a young girl murdered on her 10th birthday who haunts those who remind her of her killer. : A character who was bullied at a
: A voyeuristic or unsettling digital log of a character named Lucy experiencing something for the first time—perhaps something mundane that turns supernatural as the file extracts.
: A character who was bullied at a private school and eventually lost her eyes, becoming a vengeful entity.