SIP Server BruteForce Attack

10/11/2019-05:47:36.617084 77.247.110.20 Protocol: 17 ET SCAN Sipvicious Scan

10/08/2019-06:40:19.808235 77.247.110.20 Protocol: 17 ET SCAN Sipvicious Scan

09/30/2019-22:57:12.713323 77.247.110.20 Protocol: 17 ET SCAN Sipvicious Scan

\[2019-08-26 02:09:25\] SECURITY\[1837\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-26T02:09:25.696-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="09981048422069004",SessionID="0x7f7b3071dc58",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/56283",ACLName="no_extension_match"
\[2019-08-26 02:10:54\] SECURITY\[1837\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-26T02:10:54.603-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="009981048422069004",SessionID="0x7f7b3038f128",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/60684",ACLName="no_extension_match"
\[2019-08-26 02:13:52\] SECURITY\[1837\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-26T02:13:52.567-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0009981048422069004",SessionID="0x7f7b30b15778",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/53542",ACLNam

\[2019-08-11 06:27:50\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-11T06:27:50.042-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="700748422069004",SessionID="0x7ff4d0348688",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/57258",ACLName="no_extension_match"
\[2019-08-11 06:31:58\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-11T06:31:58.813-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="7000748422069004",SessionID="0x7ff4d07952f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/59407",ACLName="no_extension_match"
\[2019-08-11 06:36:26\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-11T06:36:26.541-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="70000748422069004",SessionID="0x7ff4d07952f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/50277",ACLName="no_

\[2019-08-10 20:35:48\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-10T20:35:48.921-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="999000048422069004",SessionID="0x7ff4d014e018",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/58733",ACLName="no_extension_match"
\[2019-08-10 20:41:36\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-10T20:41:36.090-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="99348243625002",SessionID="0x7ff4d07952f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/59145",ACLName="no_extension_match"
\[2019-08-10 20:41:46\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-10T20:41:46.595-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="90000948422069004",SessionID="0x7ff4d02d8f48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/54521",ACLName="no

\[2019-08-10 10:51:30\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-10T10:51:30.982-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9070248422069019",SessionID="0x7ff4d07952f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/50366",ACLName="no_extension_match"
\[2019-08-10 10:52:56\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-10T10:52:56.346-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="010981048243625002",SessionID="0x7ff4d07952f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/55087",ACLName="no_extension_match"
\[2019-08-10 10:56:16\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-10T10:56:16.872-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9070348422069019",SessionID="0x7ff4d0348688",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/64632",ACLName="n

\[2019-08-10 00:30:38\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-10T00:30:38.126-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="950648422069019",SessionID="0x7ff4d07e79a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/63769",ACLName="no_extension_match"
\[2019-08-10 00:32:30\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-10T00:32:30.379-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="001948243625002",SessionID="0x7ff4d0348688",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/60763",ACLName="no_extension_match"
\[2019-08-10 00:35:20\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-08-10T00:35:20.180-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="950748422069019",SessionID="0x7ff4d0348688",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.20/51234",ACLName="no_ext

unauthorized connection attempt

[2020-06-28 17:24:51] NOTICE[1273] chan_sip.c: Registration from '"2908" ' failed for '77.247.110.2:5064' - Wrong password
[2020-06-28 17:24:51] SECURITY[1288] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-06-28T17:24:51.624-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="2908",SessionID="0x7f31c02f97a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.2/5064",Challenge="37caaa52",ReceivedChallenge="37caaa52",ReceivedHash="e87c29e6c1817591943b89639a4a0676"
[2020-06-28 17:29:09] NOTICE[1273] chan_sip.c: Registration from '"2908" ' failed for '77.247.110.2:5064' - Wrong password
[2020-06-28 17:29:09] SECURITY[1288] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-06-28T17:29:09.196-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="2908",SessionID="0x7f31c02adcc8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.24
...

scans once in preceeding hours on the ports (in chronological order) 7020 resulting in total of 1 scans from 77.247.110.0/24 block.

Multiport scan 12 ports : 5064 5065 5066 5073 5074 5085 5086 5087 5088 5097 5098 5099

TCP Port Scanning

firewall-block, port(s): 20707/udp

Port scan denied

Found User-Agent associated with security scanner
Request Missing a Host Header

Port scanning [3 denied]

Port scanning [3 denied]

trying to access non-authorized port

05/24/2020-08:16:45.569374 77.247.110.58 Protocol: 17 ET SCAN Sipvicious Scan

firewall-block, port(s): 5060/udp

[2020-05-11 12:56:03] NOTICE[1157] chan_sip.c: Registration from '2113 ' failed for '77.247.110.25:39139' - Wrong password
[2020-05-11 12:56:03] SECURITY[1173] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-05-11T12:56:03.094-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="2113",SessionID="0x7f5f107b3898",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.25/39139",Challenge="6e9e74f7",ReceivedChallenge="6e9e74f7",ReceivedHash="7719d35949f68e6bbd867e678d222a11"
[2020-05-11 13:02:11] NOTICE[1157] chan_sip.c: Registration from '1333333 ' failed for '77.247.110.25:45567' - Wrong password
[2020-05-11 13:02:11] SECURITY[1173] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-05-11T13:02:11.143-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1333333",SessionID="0x7f5f106f5588",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV
...

05/10/2020-17:42:49.443850 77.247.110.58 Protocol: 17 ET SCAN Sipvicious Scan

Apr 26 23:32:58 lanister sshd[32358]: Failed password for invalid user tester from 61.189.243.28 port 36780 ssh2
Apr 26 23:37:29 lanister sshd[32414]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.189.243.28  user=root
Apr 26 23:37:31 lanister sshd[32414]: Failed password for root from 61.189.243.28 port 35298 ssh2
Apr 26 23:52:09 lanister sshd[32725]: Invalid user zenor from 61.189.243.28

206.189.230.98 - - [27/Apr/2020:10:44:14 +0200] "GET /wp-login.php HTTP/1.1" 200 1899 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
206.189.230.98 - - [27/Apr/2020:10:44:19 +0200] "POST /wp-login.php HTTP/1.1" 200 2029 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
206.189.230.98 - - [27/Apr/2020:10:44:21 +0200] "GET /wp-login.php HTTP/1.1" 200 1899 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
206.189.230.98 - - [27/Apr/2020:10:44:22 +0200] "POST /wp-login.php HTTP/1.1" 200 2028 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
206.189.230.98 - - [27/Apr/2020:10:44:23 +0200] "GET /wp-login.php HTTP/1.1" 200 1899 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
206.189.230.98 - - [27/Apr/2020:10:44:24 +0200] "POST /wp-login.php HTTP/1.1" 200 2027 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/201001
...

odoo8
...

Invalid user nsi from 27.71.227.197 port 46732

bruteforce detected

Apr 27 11:15:52 meumeu sshd[29224]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=141.98.81.108 
Apr 27 11:15:54 meumeu sshd[29224]: Failed password for invalid user admin from 141.98.81.108 port 38281 ssh2
Apr 27 11:16:19 meumeu sshd[29322]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=141.98.81.108 
...

Apr 27 08:51:41 mail sshd\[15196\]: Invalid user sftpuser from 124.156.121.59
Apr 27 08:51:41 mail sshd\[15196\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.156.121.59
Apr 27 08:51:43 mail sshd\[15196\]: Failed password for invalid user sftpuser from 124.156.121.59 port 57166 ssh2
...

Fail2Ban Ban Triggered

(sshd) Failed SSH login from 158.69.113.108 (CA/Canada/108.ip-158-69-113.net): 5 in the last 3600 secs

DATE:2020-04-27 10:49:30, IP:128.199.197.161, PORT:ssh SSH brute force auth (docker-dc)

Lines containing failures of 159.69.216.165 (max 1000)
Apr 27 05:15:18 mxbb sshd[11761]: Invalid user 7 from 159.69.216.165 port 54580
Apr 27 05:15:20 mxbb sshd[11761]: Failed password for invalid user 7 from 159.69.216.165 port 54580 ssh2
Apr 27 05:15:20 mxbb sshd[11761]: Received disconnect from 159.69.216.165 port 54580:11: Bye Bye [preauth]
Apr 27 05:15:20 mxbb sshd[11761]: Disconnected from 159.69.216.165 port 54580 [preauth]
Apr 27 05:21:10 mxbb sshd[12133]: Failed password for r.r from 159.69.216.165 port 40738 ssh2
Apr 27 05:21:10 mxbb sshd[12133]: Received disconnect from 159.69.216.165 port 40738:11: Bye Bye [preauth]
Apr 27 05:21:10 mxbb sshd[12133]: Disconnected from 159.69.216.165 port 40738 [preauth]
Apr 27 05:24:54 mxbb sshd[12364]: Invalid user courtney from 159.69.216.165 port 57258
Apr 27 05:24:56 mxbb sshd[12364]: Failed password for invalid user courtney from 159.69.216.165 port 57258 ssh2
Apr 27 05:24:56 mxbb sshd[12364]: Received disconnect from 159........
------------------------------

Apr 27 05:47:39 vps sshd[16078]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=31.44.247.180 
Apr 27 05:47:41 vps sshd[16078]: Failed password for invalid user martin from 31.44.247.180 port 34723 ssh2
Apr 27 05:51:50 vps sshd[16364]: Failed password for root from 31.44.247.180 port 40151 ssh2
...

04/27/2020-05:06:59.029462 80.82.77.234 Protocol: 6 ET DROP Dshield Block Listed Source group 1

Apr 27 08:47:35 vmd26974 sshd[384]: Failed password for root from 213.136.79.154 port 60612 ssh2
...

Apr 27 11:32:36 debian-2gb-nbg1-2 kernel: \[10238888.103276\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=195.54.160.243 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=246 ID=27954 PROTO=TCP SPT=54489 DPT=5905 WINDOW=1024 RES=0x00 SYN URGP=0