Resolved w7bren.oneproxifier.com to 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168
Resolved extradq.oneproxifier.com to 22.214.171.124, 126.96.36.199
Here are two samples of what appears to be reverse proxy malware. It connects back to the indicated servers and maintains a connection, waiting to relay connections through the infected computer. It appears to only use windows servers for the back connect software.
Samples are located here.