[2020-09-07 16:00:42] NOTICE[1194] chan_sip.c: Registration from '"60003" ' failed for '103.145.13.118:5813' - Wrong password
[2020-09-07 16:00:42] SECURITY[1233] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-09-07T16:00:42.065-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="60003",SessionID="0x7f2ddc144af8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/103.145.13.118/5813",Challenge="643ee4c1",ReceivedChallenge="643ee4c1",ReceivedHash="7608e1c3bc8cad3cc1cfef0200a0791b"
[2020-09-07 16:00:42] NOTICE[1194] chan_sip.c: Registration from '"60003" ' failed for '103.145.13.118:5813' - Wrong password
[2020-09-07 16:00:42] SECURITY[1233] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-09-07T16:00:42.214-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="60003",SessionID="0x7f2ddc3ee718",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IP
...

[2020-09-07 06:26:13] NOTICE[1194] chan_sip.c: Registration from '"50002" ' failed for '103.145.13.118:5112' - Wrong password
[2020-09-07 06:26:13] SECURITY[1233] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-09-07T06:26:13.608-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="50002",SessionID="0x7f2ddcbdd678",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/103.145.13.118/5112",Challenge="4a9cc7b3",ReceivedChallenge="4a9cc7b3",ReceivedHash="6abeac5e2009c3ff6a3b6328bf4d8eab"
[2020-09-07 06:26:13] NOTICE[1194] chan_sip.c: Registration from '"50002" ' failed for '103.145.13.118:5112' - Wrong password
[2020-09-07 06:26:13] SECURITY[1233] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-09-07T06:26:13.618-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="50002",SessionID="0x7f2ddc23cbb8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IP
...

[2020-08-29 17:06:54] NOTICE[1185] chan_sip.c: Registration from '"70002" ' failed for '103.145.13.118:6425' - Wrong password
[2020-08-29 17:06:54] SECURITY[1203] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-08-29T17:06:54.906-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="70002",SessionID="0x7f10c405a408",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/103.145.13.118/6425",Challenge="2c0c354f",ReceivedChallenge="2c0c354f",ReceivedHash="d7c72c4e17234be00a4d2a8acde78474"
[2020-08-29 17:06:55] NOTICE[1185] chan_sip.c: Registration from '"70002" ' failed for '103.145.13.118:6425' - Wrong password
[2020-08-29 17:06:55] SECURITY[1203] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-08-29T17:06:55.123-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="70002",SessionID="0x7f10c4286a78",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IP
...

[2020-08-24 04:27:51] NOTICE[1185] chan_sip.c: Registration from '"806" ' failed for '103.145.13.118:5977' - Wrong password
[2020-08-24 04:27:51] SECURITY[1203] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-08-24T04:27:51.767-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="806",SessionID="0x7f10c4709548",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/103.145.13.118/5977",Challenge="18ce23df",ReceivedChallenge="18ce23df",ReceivedHash="50dc3cd902b434b3113e10a7fe333bb9"
[2020-08-24 04:27:51] NOTICE[1185] chan_sip.c: Registration from '"806" ' failed for '103.145.13.118:5977' - Wrong password
[2020-08-24 04:27:51] SECURITY[1203] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-08-24T04:27:51.820-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="806",SessionID="0x7f10c41590f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/103.1
...

SSH login attempts with user root.

Automatic report - Banned IP Access

Port Scan

TCP ports : 443

Severity: Medium
TypeMisc: Attack
Category: Dshield
Source: 103.145.13.149 : 42748

ET DROP Dshield Block Listed Source group 1 - port: 5060 proto: sip cat: Misc Attackbytes: 452

ET DROP Dshield Block Listed Source group 1 - port: 5060 proto: sip cat: Misc Attackbytes: 461

ET DROP Dshield Block Listed Source group 1 - port: 5038 proto: tcp cat: Misc Attackbytes: 60

ET DROP Dshield Block Listed Source group 1 - port: 5038 proto: tcp cat: Misc Attackbytes: 60

ET CINS Active Threat Intelligence Poor Reputation IP group 95 - port: 5038 proto: tcp cat: Misc Attackbytes: 60

103.145.13.229 was recorded 6 times by 4 hosts attempting to connect to the following ports: 5060. Incident counter (4h, 24h, all-time): 6, 33, 646

ET SCAN Sipvicious Scan - port: 5060 proto: sip cat: Attempted Information Leakbytes: 462

Trying ports that it shouldn't be.

 UDP 103.145.13.193:5140 -> port 5060, len 417

Port scan denied

UDP port : 5060

UDP port : 5060

Jan  9 22:25:28 sxvn sshd[965258]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=82.64.242.49 
Jan  9 22:25:28 sxvn sshd[965260]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=82.64.242.49

Jan 10 00:11:48 vps647732 sshd[12417]: Failed password for root from 218.92.0.184 port 34979 ssh2
Jan 10 00:12:01 vps647732 sshd[12417]: Failed password for root from 218.92.0.184 port 34979 ssh2
Jan 10 00:12:01 vps647732 sshd[12417]: error: maximum authentication attempts exceeded for root from 218.92.0.184 port 34979 ssh2 [preauth]
...

Jan  9 12:48:42 hanapaa sshd\[15626\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=pc-140-33-86-200.cm.vtr.net  user=root
Jan  9 12:48:44 hanapaa sshd\[15626\]: Failed password for root from 200.86.33.140 port 48107 ssh2
Jan  9 12:51:55 hanapaa sshd\[15940\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=pc-140-33-86-200.cm.vtr.net  user=root
Jan  9 12:51:58 hanapaa sshd\[15940\]: Failed password for root from 200.86.33.140 port 30963 ssh2
Jan  9 12:55:11 hanapaa sshd\[16263\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=pc-140-33-86-200.cm.vtr.net  user=root

F2B blocked SSH bruteforcing

Jan  9 23:37:12 sd-53420 sshd\[14162\]: User root from 112.85.42.182 not allowed because none of user's groups are listed in AllowGroups
Jan  9 23:37:12 sd-53420 sshd\[14162\]: Failed none for invalid user root from 112.85.42.182 port 45591 ssh2
Jan  9 23:37:12 sd-53420 sshd\[14162\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.182  user=root
Jan  9 23:37:14 sd-53420 sshd\[14162\]: Failed password for invalid user root from 112.85.42.182 port 45591 ssh2
Jan  9 23:37:35 sd-53420 sshd\[14301\]: User root from 112.85.42.182 not allowed because none of user's groups are listed in AllowGroups
...

97.74.236.9 - - [10/Jan/2020:00:06:51 +0100] "POST /wp-login.php HTTP/1.1" 200 3121 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
97.74.236.9 - - [10/Jan/2020:00:06:52 +0100] "POST /wp-login.php HTTP/1.1" 200 3123 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...

Jan  9 23:41:18 www sshd\[8311\]: Invalid user efu from 201.122.102.21Jan  9 23:41:20 www sshd\[8311\]: Failed password for invalid user efu from 201.122.102.21 port 56314 ssh2Jan  9 23:42:55 www sshd\[8319\]: Invalid user nagios from 201.122.102.21Jan  9 23:42:57 www sshd\[8319\]: Failed password for invalid user nagios from 201.122.102.21 port 41956 ssh2
...

Jan  9 23:48:46 MainVPS sshd[15305]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.226  user=root
Jan  9 23:48:48 MainVPS sshd[15305]: Failed password for root from 222.186.173.226 port 35581 ssh2
Jan  9 23:48:57 MainVPS sshd[15305]: Failed password for root from 222.186.173.226 port 35581 ssh2
Jan  9 23:48:46 MainVPS sshd[15305]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.226  user=root
Jan  9 23:48:48 MainVPS sshd[15305]: Failed password for root from 222.186.173.226 port 35581 ssh2
Jan  9 23:48:57 MainVPS sshd[15305]: Failed password for root from 222.186.173.226 port 35581 ssh2
Jan  9 23:48:46 MainVPS sshd[15305]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.226  user=root
Jan  9 23:48:48 MainVPS sshd[15305]: Failed password for root from 222.186.173.226 port 35581 ssh2
Jan  9 23:48:57 MainVPS sshd[15305]: Failed password for root from 222.18

firewall-block, port(s): 3391/tcp, 12000/tcp, 14000/tcp, 28000/tcp, 30303/tcp, 32954/tcp, 33113/tcp

Jan 10 03:13:47 our-server-hostname postfix/smtpd[32403]: connect from unknown[103.135.38.109]
Jan x@x
Jan 10 03:13:50 our-server-hostname postfix/smtpd[32403]: lost connection after RCPT from unknown[103.135.38.109]
Jan 10 03:13:50 our-server-hostname postfix/smtpd[32403]: disconnect from unknown[103.135.38.109]
Jan 10 03:17:06 our-server-hostname postfix/smtpd[32492]: connect from unknown[103.135.38.109]
Jan x@x
Jan 10 03:17:08 our-server-hostname postfix/smtpd[32492]: lost connection after RCPT from unknown[103.135.38.109]
Jan 10 03:17:08 our-server-hostname postfix/smtpd[32492]: disconnect from unknown[103.135.38.109]
Jan 10 03:17:15 our-server-hostname postfix/smtpd[32491]: connect from unknown[103.135.38.109]
Jan x@x
Jan 10 03:17:17 our-server-hostname postfix/smtpd[32491]: lost connection after RCPT from unknown[103.135.38.109]
Jan 10 03:17:17 our-server-hostname postfix/smtpd[32491]: disconnect from unknown[103.135.38.109]
Jan 10 03:21:26 our-server-hostname pos........
-------------------------------

Jan  9 12:07:36 wbs sshd\[3992\]: Invalid user rb from 152.136.101.65
Jan  9 12:07:36 wbs sshd\[3992\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=152.136.101.65
Jan  9 12:07:38 wbs sshd\[3992\]: Failed password for invalid user rb from 152.136.101.65 port 46148 ssh2
Jan  9 12:10:29 wbs sshd\[4354\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=152.136.101.65  user=root
Jan  9 12:10:32 wbs sshd\[4354\]: Failed password for root from 152.136.101.65 port 42874 ssh2

Brute-force attempt banned

2020-01-09T22:25:24.7514441240 sshd\[14804\]: Invalid user user0 from 140.143.151.93 port 52564
2020-01-09T22:25:24.7543161240 sshd\[14804\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.151.93
2020-01-09T22:25:26.2321081240 sshd\[14804\]: Failed password for invalid user user0 from 140.143.151.93 port 52564 ssh2
...

202.44.54.48 - - \[09/Jan/2020:22:24:31 +0100\] "POST /wp-login.php HTTP/1.0" 200 4404 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
202.44.54.48 - - \[09/Jan/2020:22:24:34 +0100\] "POST /wp-login.php HTTP/1.0" 200 4402 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
202.44.54.48 - - \[09/Jan/2020:22:24:36 +0100\] "POST /xmlrpc.php HTTP/1.0" 200 736 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"

2020-01-09 15:01:49 dovecot_login authenticator failed for (cbqkn) [125.83.104.116]:52141 I=[192.147.25.65]:25: 535 Incorrect authentication data (set_id=zhaoyan@lerctr.org)
2020-01-09 15:21:41 dovecot_login authenticator failed for (xaswt) [125.83.104.116]:60830 I=[192.147.25.65]:25: 535 Incorrect authentication data (set_id=zhaopeng@lerctr.org)
2020-01-09 15:24:53 dovecot_login authenticator failed for (yxmna) [125.83.104.116]:59219 I=[192.147.25.65]:25: 535 Incorrect authentication data (set_id=zhaojuan@lerctr.org)
...