2019-09-27T17:58:49.241223abusebot-5.cloudsearch.cf sshd\[19840\]: Invalid user persimmon123 from 188.131.213.192 port 49756
2019-09-27T17:58:49.245853abusebot-5.cloudsearch.cf sshd\[19840\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.131.213.192

Sep 27 14:22:50 s64-1 sshd[7653]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=210.71.232.236
Sep 27 14:22:52 s64-1 sshd[7653]: Failed password for invalid user relic from 210.71.232.236 port 50066 ssh2
Sep 27 14:27:21 s64-1 sshd[7761]: Failed password for root from 210.71.232.236 port 41832 ssh2
...

Sep 27 07:07:13 mailman postfix/smtpd[28813]: NOQUEUE: reject: RCPT from unknown[103.71.65.101]: 554 5.7.1 Service unavailable; Client host [103.71.65.101] blocked using sbl-xbl.spamhaus.org; https://www.spamhaus.org/query/ip/103.71.65.101; from= to= proto=ESMTP helo=<[103.71.65.101]>
Sep 27 07:09:21 mailman postfix/smtpd[28813]: NOQUEUE: reject: RCPT from unknown[103.71.65.101]: 554 5.7.1 Service unavailable; Client host [103.71.65.101] blocked using sbl-xbl.spamhaus.org; https://www.spamhaus.org/query/ip/103.71.65.101; from= to= proto=ESMTP helo=<[103.71.65.101]>

detected by Fail2Ban

2019-09-27T15:51:50.786360lon01.zurich-datacenter.net sshd\[15565\]: Invalid user nm from 193.70.39.175 port 32814
2019-09-27T15:51:50.798562lon01.zurich-datacenter.net sshd\[15565\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.ip-193-70-39.eu
2019-09-27T15:51:52.899175lon01.zurich-datacenter.net sshd\[15565\]: Failed password for invalid user nm from 193.70.39.175 port 32814 ssh2
2019-09-27T15:55:35.925763lon01.zurich-datacenter.net sshd\[15665\]: Invalid user ts3bot3 from 193.70.39.175 port 45562
2019-09-27T15:55:35.933644lon01.zurich-datacenter.net sshd\[15665\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.ip-193-70-39.eu
...

Sep 27 12:34:53 xtremcommunity sshd\[24300\]: Invalid user jenkins from 104.248.185.73 port 42876
Sep 27 12:34:53 xtremcommunity sshd\[24300\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.185.73
Sep 27 12:34:55 xtremcommunity sshd\[24300\]: Failed password for invalid user jenkins from 104.248.185.73 port 42876 ssh2
Sep 27 12:39:21 xtremcommunity sshd\[24428\]: Invalid user user from 104.248.185.73 port 55128
Sep 27 12:39:21 xtremcommunity sshd\[24428\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.185.73
...

Sep 27 18:14:39 server sshd[8066]: Failed password for invalid user test from 104.236.58.55 port 39860 ssh2
Sep 27 18:19:10 server sshd[8852]: Failed password for invalid user 123 from 104.236.58.55 port 56184 ssh2
Sep 27 18:22:58 server sshd[9540]: Failed password for invalid user a from 104.236.58.55 port 39968 ssh2

DATE:2019-09-27 14:36:46,IP:81.134.41.100,MATCHES:11,PORT:ssh

this ip generate email spam

Unauthorised access (Sep 27) SRC=196.249.68.146 LEN=52 TTL=108 ID=3434 DF TCP DPT=445 WINDOW=8192 SYN

Sep 27 07:22:55 sachi sshd\[393\]: Invalid user huso from 96.57.28.210
Sep 27 07:22:55 sachi sshd\[393\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=96.57.28.210
Sep 27 07:22:57 sachi sshd\[393\]: Failed password for invalid user huso from 96.57.28.210 port 52405 ssh2
Sep 27 07:27:17 sachi sshd\[785\]: Invalid user nas from 96.57.28.210
Sep 27 07:27:17 sachi sshd\[785\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=96.57.28.210

2019-09-27T12:53:28.9674841495-001 sshd\[60174\]: Failed password for invalid user ea from 178.124.161.75 port 52422 ssh2
2019-09-27T13:07:35.8954671495-001 sshd\[61618\]: Invalid user sonar from 178.124.161.75 port 32958
2019-09-27T13:07:35.9024781495-001 sshd\[61618\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.124.161.75
2019-09-27T13:07:37.7105781495-001 sshd\[61618\]: Failed password for invalid user sonar from 178.124.161.75 port 32958 ssh2
2019-09-27T13:12:16.0759251495-001 sshd\[61967\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.124.161.75  user=root
2019-09-27T13:12:17.7938591495-001 sshd\[61967\]: Failed password for root from 178.124.161.75 port 45274 ssh2
...

Sep 25 08:34:56 srv1 sshd[22004]: Invalid user bingo from 114.67.76.63
Sep 25 08:34:56 srv1 sshd[22004]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.67.76.63 
Sep 25 08:34:57 srv1 sshd[22004]: Failed password for invalid user bingo from 114.67.76.63 port 47170 ssh2
Sep 25 08:34:58 srv1 sshd[22004]: Received disconnect from 114.67.76.63: 11: Bye Bye [preauth]
Sep 25 08:49:57 srv1 sshd[23668]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.67.76.63  user=ftp
Sep 25 08:49:59 srv1 sshd[23668]: Failed password for ftp from 114.67.76.63 port 44052 ssh2
Sep 25 08:49:59 srv1 sshd[23668]: Received disconnect from 114.67.76.63: 11: Bye Bye [preauth]
Sep 25 09:02:57 srv1 sshd[25575]: Invalid user kg from 114.67.76.63
Sep 25 09:02:57 srv1 sshd[25575]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.67.76.63 
Sep 25 09:02:59 srv1 sshd[25575]: Faile........
-------------------------------

Attempt to attack host OS, exploiting network vulnerabilities, on 27-09-2019 13:10:19.

Spam