"Source Code.rar" refers to a common trope in digital horror, often portrayed as a mysterious, unlabeled archive containing anomalous, potentially dangerous code found on forgotten servers. A story featuring this file typically centers on a character who, upon compiling the code, experiences inexplicable digital events that imply the code is sentient or surveillance-based, such as the file "Elias_Backup_Final.rar" appearing after an attempted termination.