How to write a fail2ban filter for 3proxy?

Question

proxy

There are 3proxy for socks5 with name authorization.
the log is issued in the format:

log /var/log/3proxy/3proxy.log D
logformat "- +_L%t.%. %N.%p %E %U %C:%c %R:%r %O %I %h %T"
archiver gz /usr/bin/gzip %F
rotate 30

For example:
1524040060.517 SOCK5.2121 00006 user 10.10.10.10:222 11.11.11.11:443 0 0 0 CONNECT_11.11.11.11:443
I want to configure fail2ban and I can't write a working filter to these logs. Standard:

[Definition]
failregex = ^\s[+-]\d{4} \S+ \d{3}0[1-9] \S+ <HOST>:\d+ [\d.]+:\d+ \d+ \d+ \d+\s

doesn't read anything.
And the second question: the names of the log file in 3proxy change from date to date, how can I specify this in jail.local? In the guides it is written everywhere only about the statically named log file.