Nov 16 02:54:05 odroid64 sshd\[8024\]: Invalid user i from 98.207.101.228
Nov 16 02:54:05 odroid64 sshd\[8024\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228
...

Jan  4 05:07:57 web9 sshd\[8985\]: Invalid user irg from 98.207.101.228
Jan  4 05:07:57 web9 sshd\[8985\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228
Jan  4 05:08:00 web9 sshd\[8985\]: Failed password for invalid user irg from 98.207.101.228 port 38622 ssh2
Jan  4 05:15:35 web9 sshd\[10012\]: Invalid user user6 from 98.207.101.228
Jan  4 05:15:35 web9 sshd\[10012\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228

Jan  2 15:49:06 zeus sshd[14133]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228 
Jan  2 15:49:08 zeus sshd[14133]: Failed password for invalid user MTBl`h5!UVNZa from 98.207.101.228 port 42375 ssh2
Jan  2 15:55:45 zeus sshd[14359]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228 
Jan  2 15:55:47 zeus sshd[14359]: Failed password for invalid user rms from 98.207.101.228 port 56149 ssh2

SSH login attempts with user root at 2020-01-02.

Dec 30 01:13:51 sd-53420 sshd\[18601\]: Invalid user florus from 98.207.101.228
Dec 30 01:13:51 sd-53420 sshd\[18601\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228
Dec 30 01:13:52 sd-53420 sshd\[18601\]: Failed password for invalid user florus from 98.207.101.228 port 51552 ssh2
Dec 30 01:20:18 sd-53420 sshd\[20748\]: Invalid user info from 98.207.101.228
Dec 30 01:20:18 sd-53420 sshd\[20748\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228
...

Dec 25 16:47:24 DAAP sshd[24573]: Invalid user zakaria from 98.207.101.228 port 35161
Dec 25 16:47:24 DAAP sshd[24573]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228
Dec 25 16:47:24 DAAP sshd[24573]: Invalid user zakaria from 98.207.101.228 port 35161
Dec 25 16:47:27 DAAP sshd[24573]: Failed password for invalid user zakaria from 98.207.101.228 port 35161 ssh2
Dec 25 16:52:56 DAAP sshd[24618]: Invalid user rob_icf from 98.207.101.228 port 46980
...

detected by Fail2Ban

SSH brute-force: detected 7 distinct usernames within a 24-hour window.

SSH Brute-Forcing (server1)

Dec 14 09:39:10 TORMINT sshd\[31636\]: Invalid user csserver from 98.207.101.228
Dec 14 09:39:10 TORMINT sshd\[31636\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228
Dec 14 09:39:12 TORMINT sshd\[31636\]: Failed password for invalid user csserver from 98.207.101.228 port 60214 ssh2
...

Nov 11 11:09:40 vmanager6029 sshd\[21431\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228  user=root
Nov 11 11:09:42 vmanager6029 sshd\[21431\]: Failed password for root from 98.207.101.228 port 35910 ssh2
Nov 11 11:19:15 vmanager6029 sshd\[21580\]: Invalid user thomasluk from 98.207.101.228 port 54739
Nov 11 11:19:15 vmanager6029 sshd\[21580\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228

Nov  6 03:26:27 server sshd\[28399\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=c-98-207-101-228.hsd1.ca.comcast.net 
Nov  6 03:26:28 server sshd\[28399\]: Failed password for invalid user kaptain from 98.207.101.228 port 42560 ssh2
Nov  6 17:14:02 server sshd\[16740\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=c-98-207-101-228.hsd1.ca.comcast.net  user=root
Nov  6 17:14:04 server sshd\[16740\]: Failed password for root from 98.207.101.228 port 42183 ssh2
Nov  6 17:37:52 server sshd\[23384\]: Invalid user kurtz from 98.207.101.228
Nov  6 17:37:52 server sshd\[23384\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=c-98-207-101-228.hsd1.ca.comcast.net 
...

Oct 24 18:16:05 vps01 sshd[10481]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228
Oct 24 18:16:08 vps01 sshd[10481]: Failed password for invalid user mathilde from 98.207.101.228 port 39197 ssh2

$f2bV_matches_ltvn

Aug  8 01:44:21 aat-srv002 sshd[3407]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228
Aug  8 01:44:23 aat-srv002 sshd[3407]: Failed password for invalid user shoutcast from 98.207.101.228 port 41693 ssh2
Aug  8 01:55:55 aat-srv002 sshd[3634]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=98.207.101.228
Aug  8 01:55:57 aat-srv002 sshd[3634]: Failed password for invalid user jboss from 98.207.101.228 port 38523 ssh2
...

95.10.29.4 - - \[26/May/2020:02:09:48 +0200\] "POST //xmlrpc.php HTTP/1.0" 200 825 "-" "Mozilla/5.0 \(Windows NT 10.0\; Win64\; x64\) AppleWebKit/537.36 \(KHTML, like Gecko\) Chrome/63.0.3239.132 Safari/537.36"
95.10.29.4 - - \[26/May/2020:02:09:52 +0200\] "POST //xmlrpc.php HTTP/1.0" 200 825 "-" "Mozilla/5.0 \(Windows NT 10.0\; Win64\; x64\) AppleWebKit/537.36 \(KHTML, like Gecko\) Chrome/63.0.3239.132 Safari/537.36"
95.10.29.4 - - \[26/May/2020:02:09:55 +0200\] "POST //xmlrpc.php HTTP/1.0" 200 825 "-" "Mozilla/5.0 \(Windows NT 10.0\; Win64\; x64\) AppleWebKit/537.36 \(KHTML, like Gecko\) Chrome/63.0.3239.132 Safari/537.36"

Invalid user testpc from 91.223.20.199 port 39732

May 26 05:49:32 prox sshd[22456]: Failed password for root from 103.202.99.40 port 48984 ssh2

2020-05-26T06:07:22.511739galaxy.wi.uni-potsdam.de sshd[6206]: Invalid user administrator from 94.23.115.61 port 58686
2020-05-26T06:07:24.123966galaxy.wi.uni-potsdam.de sshd[6206]: Failed password for invalid user administrator from 94.23.115.61 port 58686 ssh2
2020-05-26T06:07:31.479959galaxy.wi.uni-potsdam.de sshd[6215]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=ip61.ip-94-23-115.eu  user=root
2020-05-26T06:07:33.326060galaxy.wi.uni-potsdam.de sshd[6215]: Failed password for root from 94.23.115.61 port 44572 ssh2
2020-05-26T06:07:40.645297galaxy.wi.uni-potsdam.de sshd[6227]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=ip61.ip-94-23-115.eu  user=root
2020-05-26T06:07:42.725382galaxy.wi.uni-potsdam.de sshd[6227]: Failed password for root from 94.23.115.61 port 58372 ssh2
2020-05-26T06:07:49.604958galaxy.wi.uni-potsdam.de sshd[6236]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid
...

May 26 04:10:05 hcbbdb sshd\[14382\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.121.248.250  user=root
May 26 04:10:08 hcbbdb sshd\[14382\]: Failed password for root from 114.121.248.250 port 49952 ssh2
May 26 04:14:17 hcbbdb sshd\[14726\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.121.248.250  user=root
May 26 04:14:19 hcbbdb sshd\[14726\]: Failed password for root from 114.121.248.250 port 55506 ssh2
May 26 04:18:32 hcbbdb sshd\[15068\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.121.248.250  user=root

Lines containing failures of 211.136.217.120
May 25 16:51:43 kopano sshd[4819]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.136.217.120  user=r.r
May 25 16:51:45 kopano sshd[4819]: Failed password for r.r from 211.136.217.120 port 42322 ssh2
May 25 16:51:46 kopano sshd[4819]: Received disconnect from 211.136.217.120 port 42322:11: Bye Bye [preauth]
May 25 16:51:46 kopano sshd[4819]: Disconnected from authenticating user r.r 211.136.217.120 port 42322 [preauth]
May 25 16:59:56 kopano sshd[5109]: Invalid user uk from 211.136.217.120 port 54112
May 25 16:59:56 kopano sshd[5109]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.136.217.120
May 25 16:59:59 kopano sshd[5109]: Failed password for invalid user uk from 211.136.217.120 port 54112 ssh2
May 25 16:59:59 kopano sshd[5109]: Received disconnect from 211.136.217.120 port 54112:11: Bye Bye [preauth]
May 25 16:59:59 kopano sshd[5109]........
------------------------------

Abuse of XMLRPC

May 26 05:29:17 Invalid user a from 125.33.25.6 port 54128

Lines containing failures of 182.61.65.114
May 25 17:25:43 shared03 postfix/smtpd[15831]: connect from unknown[182.61.65.114]
May x@x
May 25 17:25:45 shared03 postfix/smtpd[15831]: disconnect from unknown[182.61.65.114] ehlo=1 mail=1 rcpt=0/1 quhostname=1 commands=3/4
May 25 17:25:49 shared03 postfix/smtpd[22565]: connect from unknown[182.61.65.114]
May x@x
May 25 17:25:51 shared03 postfix/smtpd[22565]: disconnect from unknown[182.61.65.114] ehlo=1 mail=1 rcpt=0/1 quhostname=1 commands=3/4
May 25 17:25:54 shared03 postfix/smtpd[15831]: connect from unknown[182.61.65.114]
May x@x
May 25 17:25:55 shared03 postfix/smtpd[15831]: disconnect from unknown[182.61.65.114] ehlo=1 mail=1 rcpt=0/1 quhostname=1 commands=3/4
May 25 17:25:59 shared03 postfix/smtpd[16745]: connect from unknown[182.61.65.114]
May x@x
May 25 17:26:01 shared03 postfix/smtpd[16745]: disconnect from unknown[182.61.65.114] ehlo=1 mail=1 rcpt=0/1 quhostname=1 commands=3/4
May 25 17:26:04 shared03 postfix/smtpd........
------------------------------

May 25 21:24:15 firewall sshd[7988]: Failed password for invalid user jboss from 51.158.189.0 port 55174 ssh2
May 25 21:25:48 firewall sshd[8010]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.158.189.0  user=root
May 25 21:25:50 firewall sshd[8010]: Failed password for root from 51.158.189.0 port 55516 ssh2
...

May 26 02:20:27 vps647732 sshd[7889]: Failed password for root from 188.166.246.158 port 60949 ssh2
...

 TCP (SYN) 198.108.66.236:16329 -> port 10082, len 44

(smtpauth) Failed SMTP AUTH login from 91.215.46.52 (PL/Poland/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-05-26 03:53:03 plain authenticator failed for ([91.215.46.52]) [91.215.46.52]: 535 Incorrect authentication data (set_id=k.sheikhan)

May 25 16:16:39 pixelmemory sshd[1146947]: Invalid user ftpuser from 51.91.77.103 port 53972
May 25 16:16:41 pixelmemory sshd[1146947]: Failed password for invalid user ftpuser from 51.91.77.103 port 53972 ssh2
May 25 16:20:12 pixelmemory sshd[1152138]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.91.77.103  user=root
May 25 16:20:14 pixelmemory sshd[1152138]: Failed password for root from 51.91.77.103 port 32994 ssh2
May 25 16:23:33 pixelmemory sshd[1157257]: Invalid user tomcat from 51.91.77.103 port 40232
...

May 26 06:09:08 santamaria sshd\[25574\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.151  user=root
May 26 06:09:10 santamaria sshd\[25574\]: Failed password for root from 222.186.175.151 port 13396 ssh2
May 26 06:09:13 santamaria sshd\[25574\]: Failed password for root from 222.186.175.151 port 13396 ssh2
...