(smtpauth) Failed SMTP AUTH login from 37.49.230.131 (EE/Estonia/-): 5 in the last 3600 secs

Jun 18 17:42:35 relay postfix/smtpd\[20339\]: warning: unknown\[37.49.230.131\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 18 17:42:41 relay postfix/smtpd\[18096\]: warning: unknown\[37.49.230.131\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 18 17:42:51 relay postfix/smtpd\[26742\]: warning: unknown\[37.49.230.131\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 18 17:43:13 relay postfix/smtpd\[26712\]: warning: unknown\[37.49.230.131\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 18 17:43:19 relay postfix/smtpd\[18096\]: warning: unknown\[37.49.230.131\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

Jun  8 23:17:31 mail.srvfarm.net postfix/smtpd[1052472]: warning: unknown[37.49.230.131]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun  8 23:17:31 mail.srvfarm.net postfix/smtpd[1052472]: lost connection after AUTH from unknown[37.49.230.131]
Jun  8 23:17:37 mail.srvfarm.net postfix/smtpd[1068290]: warning: unknown[37.49.230.131]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun  8 23:17:37 mail.srvfarm.net postfix/smtpd[1068290]: lost connection after AUTH from unknown[37.49.230.131]
Jun  8 23:17:47 mail.srvfarm.net postfix/smtpd[1066616]: warning: unknown[37.49.230.131]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun  8 23:17:47 mail.srvfarm.net postfix/smtpd[1066616]: lost connection after AUTH from unknown[37.49.230.131]

May 30 07:01:29 mail postfix/smtpd\[11752\]: warning: unknown\[37.49.230.131\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
May 30 07:01:35 mail postfix/smtpd\[11752\]: warning: unknown\[37.49.230.131\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
May 30 07:01:45 mail postfix/smtpd\[11333\]: warning: unknown\[37.49.230.131\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
May 30 07:01:55 mail postfix/smtpd\[11752\]: warning: unknown\[37.49.230.131\]: SASL LOGIN authentication failed: Connection lost to authentication server\

May 14 00:08:38 mail postfix/smtpd[102040]: warning: unknown[37.49.230.131]: SASL LOGIN authentication failed: authentication failure
May 14 00:08:40 mail postfix/smtpd[102040]: warning: unknown[37.49.230.131]: SASL LOGIN authentication failed: authentication failure
May 14 00:08:42 mail postfix/smtpd[102040]: warning: unknown[37.49.230.131]: SASL LOGIN authentication failed: authentication failure
...

2020-04-28 18:27:07 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=admin@ift.org.ua\)2020-04-28 18:27:46 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=noreply@ift.org.ua\)2020-04-28 18:29:10 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=webmaster@ift.org.ua\)
...

2020-04-25 10:00:15 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=ftpuser@ift.org.ua\)2020-04-25 10:00:36 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=copier@ift.org.ua\)2020-04-25 10:02:30 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=test@ift.org.ua\)
...

2020-04-25 02:36:16 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=ipmanagement@ift.org.ua\)2020-04-25 02:36:21 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=postmaster@ift.org.ua\)2020-04-25 02:38:04 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=shipping@ift.org.ua\)
...

2020-04-24 20:17:44 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=webmaster@ift.org.ua\)2020-04-24 20:17:50 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=administrator@ift.org.ua\)2020-04-24 20:19:30 dovecot_login authenticator failed for \(User\) \[37.49.230.131\]: 535 Incorrect authentication data \(set_id=manager@ift.org.ua\)
...

(smtpauth) Failed SMTP AUTH login from 37.49.230.131 (NL/Netherlands/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-04-02 17:09:04 login authenticator failed for (User) [37.49.230.131]: 535 Incorrect authentication data (set_id=test@farasunict.com)

Bible

2020-10-13T06:44:21.356144news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
2020-10-13T06:44:25.395781news0 dovecot[21131]: pop3-login: Aborted login (auth failed, 1 attempts in 4 secs): user=, method=PLAIN, rip=37.49.230.238, lip=95.111.246.42, session=
2020-10-13T06:44:28.401407news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
...

2020-10-13T06:44:21.356144news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
2020-10-13T06:44:25.395781news0 dovecot[21131]: pop3-login: Aborted login (auth failed, 1 attempts in 4 secs): user=, method=PLAIN, rip=37.49.230.238, lip=95.111.246.42, session=
2020-10-13T06:44:28.401407news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
...

Dovecot Invalid User Login Attempt.

"AmooT";tag=3533393765393339313363340132313832313335333935

\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.624+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffea08d88",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="096f171f",ReceivedChallenge="096f171f",ReceivedHash="b099bdfad5869da4ae2114a56a2b4299"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.759+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffeab8148",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="233a417c",ReceivedChallenge="233a417c",ReceivedHash="0017581d14759d4b5ad3a404ed924131"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.783+0200",Severity="Error",Service="SIP",EventVersion="2",Accoun
...

\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.624+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffea08d88",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="096f171f",ReceivedChallenge="096f171f",ReceivedHash="b099bdfad5869da4ae2114a56a2b4299"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.759+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffeab8148",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="233a417c",ReceivedChallenge="233a417c",ReceivedHash="0017581d14759d4b5ad3a404ed924131"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.783+0200",Severity="Error",Service="SIP",EventVersion="2",Accoun
...

[N1.H1.VM1] Port Scanner Detected Blocked by UFW

SIP Server BruteForce Attack

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

Hellooo

Hellooo

Sep 28 15:49:19 : SSH login attempts with invalid user

Dec 22 18:57:07 markkoudstaal sshd[8347]: Failed password for root from 112.85.42.89 port 62909 ssh2
Dec 22 19:02:47 markkoudstaal sshd[8777]: Failed password for root from 112.85.42.89 port 40874 ssh2
Dec 22 19:02:49 markkoudstaal sshd[8777]: Failed password for root from 112.85.42.89 port 40874 ssh2

MYH,DEF GET /downloader/info.php

Dec 22 15:55:08 ws26vmsma01 sshd[145148]: Failed password for root from 106.54.54.219 port 49726 ssh2
...

Dec 22 18:18:31 zeus sshd[22836]: Failed password for root from 218.92.0.156 port 32176 ssh2
Dec 22 18:18:35 zeus sshd[22836]: Failed password for root from 218.92.0.156 port 32176 ssh2
Dec 22 18:18:40 zeus sshd[22836]: Failed password for root from 218.92.0.156 port 32176 ssh2
Dec 22 18:18:45 zeus sshd[22836]: Failed password for root from 218.92.0.156 port 32176 ssh2
Dec 22 18:18:49 zeus sshd[22836]: Failed password for root from 218.92.0.156 port 32176 ssh2

--- report ---
Dec 22 14:57:35 sshd: Connection from 222.186.175.154 port 32332
Dec 22 14:57:57 sshd: Received disconnect from 222.186.175.154: 11:  [preauth]

Dec 22 18:30:51 lnxweb61 sshd[20110]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.48.33.75

MultiHost/MultiPort Probe, Scan, Hack -

1577026176 - 12/22/2019 15:49:36 Host: 61.7.128.135/61.7.128.135 Port: 445 TCP Blocked

Unauthorized connection attempt detected from IP address 188.140.135.242 to port 445

Dec 22 16:25:28 [host] sshd[1987]: Invalid user test from 51.75.32.141
Dec 22 16:25:28 [host] sshd[1987]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.75.32.141
Dec 22 16:25:29 [host] sshd[1987]: Failed password for invalid user test from 51.75.32.141 port 52114 ssh2

invalid user

firewall-block, port(s): 22/tcp

Dec 22 16:00:45 debian-2gb-nbg1-2 kernel: \[679595.648899\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=217.182.204.72 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=240 ID=12346 PROTO=TCP SPT=57873 DPT=40122 WINDOW=1024 RES=0x00 SYN URGP=0

Dec 22 07:34:18 sachi sshd\[15000\]: Invalid user ching from 45.124.86.65
Dec 22 07:34:18 sachi sshd\[15000\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.124.86.65
Dec 22 07:34:20 sachi sshd\[15000\]: Failed password for invalid user ching from 45.124.86.65 port 35650 ssh2
Dec 22 07:41:24 sachi sshd\[15799\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.124.86.65  user=uucp
Dec 22 07:41:25 sachi sshd\[15799\]: Failed password for uucp from 45.124.86.65 port 41814 ssh2

2019-12-22T18:09:49.544015+00:00 suse sshd[18818]: User root from 222.186.173.142 not allowed because not listed in AllowUsers
2019-12-22T18:09:52.304546+00:00 suse sshd[18818]: error: PAM: Authentication failure for illegal user root from 222.186.173.142
2019-12-22T18:09:49.544015+00:00 suse sshd[18818]: User root from 222.186.173.142 not allowed because not listed in AllowUsers
2019-12-22T18:09:52.304546+00:00 suse sshd[18818]: error: PAM: Authentication failure for illegal user root from 222.186.173.142
2019-12-22T18:09:49.544015+00:00 suse sshd[18818]: User root from 222.186.173.142 not allowed because not listed in AllowUsers
2019-12-22T18:09:52.304546+00:00 suse sshd[18818]: error: PAM: Authentication failure for illegal user root from 222.186.173.142
2019-12-22T18:09:52.306759+00:00 suse sshd[18818]: Failed keyboard-interactive/pam for invalid user root from 222.186.173.142 port 15764 ssh2
...