WordPress login Brute force / Web App Attack on client site.

Mar 11 21:18:32 vpn01 sshd[25777]: Failed password for root from 111.229.57.138 port 43870 ssh2
Mar 11 21:22:30 vpn01 sshd[25863]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.229.57.138
...

2020-03-11 21:55:25 dovecot_login authenticator failed for \(\[78.128.113.70\]\) \[78.128.113.70\]: 535 Incorrect authentication data \(set_id=harald.schueller@jugend-ohne-grenzen.net\)
2020-03-11 21:55:32 dovecot_login authenticator failed for \(\[78.128.113.70\]\) \[78.128.113.70\]: 535 Incorrect authentication data
2020-03-11 21:55:40 dovecot_login authenticator failed for \(\[78.128.113.70\]\) \[78.128.113.70\]: 535 Incorrect authentication data
2020-03-11 21:55:46 dovecot_login authenticator failed for \(\[78.128.113.70\]\) \[78.128.113.70\]: 535 Incorrect authentication data
2020-03-11 21:55:57 dovecot_login authenticator failed for \(\[78.128.113.70\]\) \[78.128.113.70\]: 535 Incorrect authentication data
...

(imapd) Failed IMAP login from 188.158.145.187 (IR/Iran/adsl-188-158-145-187.sabanet.ir): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: Mar 11 22:47:40 ir1 dovecot[4133960]: imap-login: Aborted login (auth failed, 1 attempts in 2 secs): user=, method=PLAIN, rip=188.158.145.187, lip=5.63.12.44, session=

suspicious action Wed, 11 Mar 2020 16:17:51 -0300

Mar 11 20:53:08 vps647732 sshd[15665]: Failed password for root from 114.67.69.206 port 48930 ssh2
...

2020-03-11T19:56:28.987762shield sshd\[25259\]: Invalid user mmcom from 121.94.45.237 port 40031
2020-03-11T19:56:28.997001shield sshd\[25259\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=nthygo012237.hygo.nt.ngn.ppp.infoweb.ne.jp
2020-03-11T19:56:31.283152shield sshd\[25259\]: Failed password for invalid user mmcom from 121.94.45.237 port 40031 ssh2
2020-03-11T19:58:16.838126shield sshd\[25439\]: Invalid user QWERT_!@\#\$% from 121.94.45.237 port 54048
2020-03-11T19:58:16.848014shield sshd\[25439\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=nthygo012237.hygo.nt.ngn.ppp.infoweb.ne.jp

(sshd) Failed SSH login from 202.43.110.189 (VN/Vietnam/-): 2 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Mar 11 20:17:05 ubnt-55d23 sshd[23193]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.43.110.189  user=root
Mar 11 20:17:06 ubnt-55d23 sshd[23193]: Failed password for root from 202.43.110.189 port 35404 ssh2

Mar 11 21:05:40 sd-53420 sshd\[4355\]: User root from 167.114.185.237 not allowed because none of user's groups are listed in AllowGroups
Mar 11 21:05:40 sd-53420 sshd\[4355\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.114.185.237  user=root
Mar 11 21:05:42 sd-53420 sshd\[4355\]: Failed password for invalid user root from 167.114.185.237 port 35370 ssh2
Mar 11 21:07:22 sd-53420 sshd\[4519\]: User root from 167.114.185.237 not allowed because none of user's groups are listed in AllowGroups
Mar 11 21:07:22 sd-53420 sshd\[4519\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.114.185.237  user=root
...

Mar 11 20:37:21 mail sshd[27755]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.190.96.235  user=root
Mar 11 20:37:23 mail sshd[27755]: Failed password for root from 60.190.96.235 port 22301 ssh2
Mar 11 20:50:32 mail sshd[30379]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.190.96.235  user=root
Mar 11 20:50:34 mail sshd[30379]: Failed password for root from 60.190.96.235 port 32027 ssh2
Mar 11 20:53:52 mail sshd[30772]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.190.96.235  user=root
Mar 11 20:53:55 mail sshd[30772]: Failed password for root from 60.190.96.235 port 58593 ssh2
...

port scan and connect, tcp 80 (http)

Mar 11 20:40:33 localhost sshd[34295]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176  user=root
Mar 11 20:40:35 localhost sshd[34295]: Failed password for root from 112.85.42.176 port 53568 ssh2
Mar 11 20:40:38 localhost sshd[34295]: Failed password for root from 112.85.42.176 port 53568 ssh2
Mar 11 20:40:33 localhost sshd[34295]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176  user=root
Mar 11 20:40:35 localhost sshd[34295]: Failed password for root from 112.85.42.176 port 53568 ssh2
Mar 11 20:40:38 localhost sshd[34295]: Failed password for root from 112.85.42.176 port 53568 ssh2
Mar 11 20:40:33 localhost sshd[34295]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176  user=root
Mar 11 20:40:35 localhost sshd[34295]: Failed password for root from 112.85.42.176 port 53568 ssh2
Mar 11 20:40:38 localhost sshd[34295]: Failed pas
...

Chat Spam

Mar 11 20:12:50 icinga sshd[21637]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=62.234.79.230 
Mar 11 20:12:52 icinga sshd[21637]: Failed password for invalid user wei from 62.234.79.230 port 60236 ssh2
Mar 11 20:17:42 icinga sshd[26339]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=62.234.79.230 
...

Mar 11 21:27:09 localhost sshd\[8453\]: Invalid user openbravo123 from 51.75.19.175 port 52966
Mar 11 21:27:09 localhost sshd\[8453\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.75.19.175
Mar 11 21:27:11 localhost sshd\[8453\]: Failed password for invalid user openbravo123 from 51.75.19.175 port 52966 ssh2

Mar 11 04:40:59 main sshd[16473]: Failed password for invalid user lab from 123.235.36.26 port 49554 ssh2