*Port Scan* detected from 37.49.224.137 (NL/Netherlands/-). 4 hits in the last 256 seconds

*Port Scan* detected from 185.175.93.9 (ES/Spain/-). 4 hits in the last 265 seconds

Brute force attempt

Sep 26 05:56:26 [host] sshd[17235]: Invalid user dggim from 101.124.6.112
Sep 26 05:56:26 [host] sshd[17235]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=101.124.6.112
Sep 26 05:56:29 [host] sshd[17235]: Failed password for invalid user dggim from 101.124.6.112 port 58062 ssh2

Brute force SMTP login attempts.

Sep 25 18:52:01 php1 sshd\[5181\]: Invalid user alena from 62.234.138.254
Sep 25 18:52:01 php1 sshd\[5181\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=62.234.138.254
Sep 25 18:52:03 php1 sshd\[5181\]: Failed password for invalid user alena from 62.234.138.254 port 45707 ssh2
Sep 25 18:55:08 php1 sshd\[5880\]: Invalid user praveen from 62.234.138.254
Sep 25 18:55:08 php1 sshd\[5880\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=62.234.138.254

2019-09-26T05:52:06.237711lon01.zurich-datacenter.net sshd\[5171\]: Invalid user aj from 132.145.170.174 port 48904
2019-09-26T05:52:06.244310lon01.zurich-datacenter.net sshd\[5171\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=132.145.170.174
2019-09-26T05:52:08.143705lon01.zurich-datacenter.net sshd\[5171\]: Failed password for invalid user aj from 132.145.170.174 port 48904 ssh2
2019-09-26T05:56:13.805076lon01.zurich-datacenter.net sshd\[5241\]: Invalid user jhshin from 132.145.170.174 port 33958
2019-09-26T05:56:13.813637lon01.zurich-datacenter.net sshd\[5241\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=132.145.170.174
...

Sep 26 10:04:59 gw1 sshd[12052]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.39.61.5
Sep 26 10:05:02 gw1 sshd[12052]: Failed password for invalid user nagios from 59.39.61.5 port 20836 ssh2
...

Sending out 419 type spam emails from
IP 64.91.227.156 
(liquidweb.com / sourcedns.com)

"My friends have plundered so much of my wealth since my illness and I cannot live with the agony of entrusting this huge responsibility to any of them anymore, so I sold all my inherited belongings and deposited all the sum of 9m Pounds with my bank. All I need is an honest person who will use at least %60 of the funds as I instructed, then the rest %40 will go to you for helping me accomplish this mission because donating this money to charity is the only legacy I can leave behind after my death."

Sep 26 07:18:36 vps691689 sshd[7254]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.172.44.97
Sep 26 07:18:37 vps691689 sshd[7254]: Failed password for invalid user 123 from 52.172.44.97 port 42180 ssh2
Sep 26 07:23:23 vps691689 sshd[7302]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.172.44.97
...

Sep 26 04:45:39 hcbbdb sshd\[21796\]: Invalid user koha from 149.202.164.82
Sep 26 04:45:39 hcbbdb sshd\[21796\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=149.202.164.82
Sep 26 04:45:41 hcbbdb sshd\[21796\]: Failed password for invalid user koha from 149.202.164.82 port 54752 ssh2
Sep 26 04:49:58 hcbbdb sshd\[22211\]: Invalid user moylea from 149.202.164.82
Sep 26 04:49:58 hcbbdb sshd\[22211\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=149.202.164.82

2019-09-26T12:08:41.936413enmeeting.mahidol.ac.th sshd\[8300\]: User root from 222.186.30.152 not allowed because not listed in AllowUsers
2019-09-26T12:08:42.313236enmeeting.mahidol.ac.th sshd\[8300\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.152  user=root
2019-09-26T12:08:44.830098enmeeting.mahidol.ac.th sshd\[8300\]: Failed password for invalid user root from 222.186.30.152 port 21881 ssh2
...

\[2019-09-26 01:20:58\] NOTICE\[1948\] chan_sip.c: Registration from '\' failed for '77.247.110.201:51663' - Wrong password
\[2019-09-26 01:20:58\] SECURITY\[2006\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-09-26T01:20:58.919-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="5532",SessionID="0x7f1e1c0bf258",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.201/51663",Challenge="0dd63073",ReceivedChallenge="0dd63073",ReceivedHash="05eda28b22cef40544507e94d24d8f5a"
\[2019-09-26 01:21:27\] NOTICE\[1948\] chan_sip.c: Registration from '\' failed for '77.247.110.201:59850' - Wrong password
\[2019-09-26 01:21:27\] SECURITY\[2006\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-09-26T01:21:27.153-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="12345678980",SessionID="0x7f1e1c011788",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.1

*Port Scan* detected from 121.7.24.25 (SG/Singapore/bb121-7-24-25.singnet.com.sg). 4 hits in the last 80 seconds

Sep 26 01:01:06 xtremcommunity sshd\[6921\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.60  user=root
Sep 26 01:01:09 xtremcommunity sshd\[6921\]: Failed password for root from 49.88.112.60 port 32260 ssh2
Sep 26 01:01:11 xtremcommunity sshd\[6921\]: Failed password for root from 49.88.112.60 port 32260 ssh2
Sep 26 01:01:14 xtremcommunity sshd\[6921\]: Failed password for root from 49.88.112.60 port 32260 ssh2
Sep 26 01:01:56 xtremcommunity sshd\[6923\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.60  user=root
...