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SSH-bruteforce attempts

Nov 16 15:48:03 MK-Soft-VM3 sshd[9715]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.172.115.103 
Nov 16 15:48:06 MK-Soft-VM3 sshd[9715]: Failed password for invalid user admin from 113.172.115.103 port 54184 ssh2
...

"Test Inject  am'a=0"

Automatic report - Banned IP Access

Nov 16 16:54:56 markkoudstaal sshd[13759]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.56.69
Nov 16 16:54:58 markkoudstaal sshd[13759]: Failed password for invalid user 12340 from 180.76.56.69 port 46910 ssh2
Nov 16 17:00:57 markkoudstaal sshd[14326]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.56.69

SSH Brute Force, server-1 sshd[10018]: Failed password for invalid user host from 79.157.217.179 port 33490 ssh2

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$f2bV_matches

Nov 16 16:48:37 v22019058497090703 sshd[30232]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.28.31.102
Nov 16 16:48:39 v22019058497090703 sshd[30232]: Failed password for invalid user santo from 129.28.31.102 port 44336 ssh2
Nov 16 16:54:49 v22019058497090703 sshd[1782]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.28.31.102
...

Telnet/23 MH Probe, BF, Hack -

RDP Bruteforce

Nov 16 16:50:09 SilenceServices sshd[13870]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.114.97.209
Nov 16 16:50:11 SilenceServices sshd[13870]: Failed password for invalid user ident from 167.114.97.209 port 50338 ssh2
Nov 16 16:54:30 SilenceServices sshd[15147]: Failed password for root from 167.114.97.209 port 58898 ssh2

Nov 16 17:49:31 ext1 sshd[4935]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.223.163.50

Nov 16 14:47:54 *** sshd[27800]: User backup from 122.224.175.218 not allowed because not listed in AllowUsers

A spam email was sent from this SMTP server. This kind of spam emails had the following features.:
- They attempted to camouflage the SMTP server with a KDDI's legitimate server. 
- The domain of URLs in the messages was best-self.info (103.212.223.59).