For me, that file was ratsnest.7z .
Why was it abandoned? The last log entry is from December 8, 2018: "Switching to Unifi. Maybe this time I'll label the cables." ratsnest.7z
Why was it password protected? Likely because the configs contain hardcoded WiFi passwords and public IPs. For me, that file was ratsnest
Standard dictionary attacks failed. password , 123456 , admin , ratsnest —nothing. John the Ripper ran for six hours against a rockyou.txt list. Zero hits. This wasn’t a lazy lock. Whoever zipped this wanted it to stay hidden. I stopped attacking the file and started attacking the metadata. Using a hexdump, I peeked at the header: I peeked at the header: