For me, that file was ratsnest.7z .
7z¼¯'☺ Standard. But the creation timestamp in the filesystem was modified. However, the containing the archive had a hidden NTFS stream: :zone.identifier with a download URL from a now-defunct pastebin. ratsnest.7z
After archiving the pastebin ID via the Wayback Machine, I found a single line of text posted at 3:47 AM: "The rats nest is where we hide the cables nobody wants to admit exist. The password is the year we cut the cord." A year. Cut the cord. Cable TV? Landlines? For me, that file was ratsnest