Aug 23 07:32:56 xxxxxxx5185820 sshd[5647]: Invalid user ubnt from 159.65.216.166 port 48200
Aug 23 07:32:56 xxxxxxx5185820 sshd[5647]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.65.216.166
Aug 23 07:32:58 xxxxxxx5185820 sshd[5647]: Failed password for invalid user ubnt from 159.65.216.166 port 48200 ssh2
Aug 23 07:32:58 xxxxxxx5185820 sshd[5647]: Received disconnect from 159.65.216.166 port 48200:11: Bye Bye [preauth]
Aug 23 07:32:58 xxxxxxx5185820 sshd[5647]: Disconnected from 159.65.216.166 port 48200 [preauth]
Aug 23 07:32:59 xxxxxxx5185820 sshd[5652]: Invalid user admin from 159.65.216.166 port 50726
Aug 23 07:32:59 xxxxxxx5185820 sshd[5652]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.65.216.166
Aug 23 07:33:01 xxxxxxx5185820 sshd[5652]: Failed password for invalid user admin from 159.65.216.166 port 50726 ssh2
Aug 23 07:33:01 xxxxxxx5185820 sshd[5652]: Received disconn........
-------------------------------

Invalid user szk from 134.209.149.64 port 37674

2020-08-26 22:36:04.069746-0500  localhost smtpd[75750]: NOQUEUE: reject: RCPT from unknown[148.63.120.241]: 554 5.7.1 Service unavailable; Client host [148.63.120.241] blocked using zen.spamhaus.org; https://www.spamhaus.org/query/ip/148.63.120.241; from= to= proto=ESMTP helo=<241.120.63.148.rev.vodafone.pt>

(pop3d) Failed POP3 login from 103.153.182.153 (103.153.182.153.static.snthostings.com): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: Aug 27 08:19:03 ir1 dovecot[3110802]: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=, method=PLAIN, rip=103.153.182.153, lip=5.63.12.44, session=

Aug 27 04:50:51 localhost sshd[1255674]: Failed password for root from 222.186.52.78 port 42564 ssh2
Aug 27 04:51:47 localhost sshd[1257727]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.52.78  user=root
Aug 27 04:51:49 localhost sshd[1257727]: Failed password for root from 222.186.52.78 port 57844 ssh2
Aug 27 04:52:51 localhost sshd[1259978]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.52.78  user=root
Aug 27 04:52:53 localhost sshd[1259978]: Failed password for root from 222.186.52.78 port 18723 ssh2
...

Automatic report - XMLRPC Attack

Invalid user maryam from 178.62.241.56 port 54950

Aug 27 08:12:05 santamaria sshd\[18733\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.173  user=root
Aug 27 08:12:07 santamaria sshd\[18733\]: Failed password for root from 112.85.42.173 port 19334 ssh2
Aug 27 08:12:20 santamaria sshd\[18733\]: Failed password for root from 112.85.42.173 port 19334 ssh2
...

Attempted Brute Force (dovecot)

[2020-08-27 02:33:14] NOTICE[1185] chan_sip.c: Registration from '' failed for '144.217.79.194:52220' - Wrong password
[2020-08-27 02:33:14] SECURITY[1203] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-08-27T02:33:14.958-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="301",SessionID="0x7f10c405a408",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/144.217.79.194/52220",Challenge="6ccc0905",ReceivedChallenge="6ccc0905",ReceivedHash="aa2f72234ed8d2d5bbdd0936ded1fecc"
[2020-08-27 02:33:14] NOTICE[1185] chan_sip.c: Registration from '' failed for '144.217.79.194:52221' - Wrong password
[2020-08-27 02:33:14] SECURITY[1203] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-08-27T02:33:14.958-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="301",SessionID="0x7f10c4ab1618",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/144.217.79.194
...

SSH login attempts.

$f2bV_matches

Aug 26 08:57:30 our-server-hostname sshd[28695]: Invalid user oracle from 120.78.237.27
Aug 26 08:57:30 our-server-hostname sshd[28695]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.78.237.27 
Aug 26 08:57:32 our-server-hostname sshd[28695]: Failed password for invalid user oracle from 120.78.237.27 port 62470 ssh2
Aug 26 09:22:37 our-server-hostname sshd[1035]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.78.237.27  user=r.r
Aug 26 09:22:39 our-server-hostname sshd[1035]: Failed password for r.r from 120.78.237.27 port 46443 ssh2
Aug 26 09:24:13 our-server-hostname sshd[1270]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.78.237.27  user=r.r
Aug 26 09:24:15 our-server-hostname sshd[1270]: Failed password for r.r from 120.78.237.27 port 53110 ssh2
Aug 26 09:25:47 our-server-hostname sshd[1675]: pam_unix(sshd:auth): authentication fa........
-------------------------------

2020-08-27T03:45:44.299888abusebot-7.cloudsearch.cf sshd[6027]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.72  user=root
2020-08-27T03:45:46.395380abusebot-7.cloudsearch.cf sshd[6027]: Failed password for root from 49.88.112.72 port 24654 ssh2
2020-08-27T03:48:45.182171abusebot-7.cloudsearch.cf sshd[6036]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.72  user=root
2020-08-27T03:48:47.127066abusebot-7.cloudsearch.cf sshd[6036]: Failed password for root from 49.88.112.72 port 49536 ssh2
2020-08-27T03:48:45.182171abusebot-7.cloudsearch.cf sshd[6036]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.72  user=root
2020-08-27T03:48:47.127066abusebot-7.cloudsearch.cf sshd[6036]: Failed password for root from 49.88.112.72 port 49536 ssh2
2020-08-27T03:48:49.574671abusebot-7.cloudsearch.cf sshd[6036]: Failed password for root from 49.88.112
...

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