While I’ve treated this as a story, "3melyZkng" looks like a Base64 encoded string or a randomly generated hash.
– This was the heart of it. It wasn't instructions. It was a diary entry dated November 12, 1998. 3melyZkng.rar
“The air in the crawlspace smells like ozone and wet copper,” the text began. “I found the source of the hum. It isn't a machine. It’s a frequency being broadcast from the walls themselves. If you are reading this, the broadcast has found you, too.” While I’ve treated this as a story, "3melyZkng"