\[2019-12-18 15:34:39\] NOTICE\[2839\] chan_sip.c: Registration from '"3" \' failed for '77.247.110.22:5331' - Wrong password
\[2019-12-18 15:34:39\] SECURITY\[2857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-12-18T15:34:39.457-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="3",SessionID="0x7f0fb4234468",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.22/5331",Challenge="2d5e25d1",ReceivedChallenge="2d5e25d1",ReceivedHash="428bb9fccb75c0af63039b762749b1ee"
\[2019-12-18 15:34:39\] NOTICE\[2839\] chan_sip.c: Registration from '"3" \' failed for '77.247.110.22:5331' - Wrong password
\[2019-12-18 15:34:39\] SECURITY\[2857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-12-18T15:34:39.514-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="3",SessionID="0x7f0fb447f838",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.22/53

\[2019-12-10 14:13:39\] NOTICE\[2839\] chan_sip.c: Registration from '"4000" \' failed for '77.247.110.22:5888' - Wrong password
\[2019-12-10 14:13:39\] SECURITY\[2857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-12-10T14:13:39.897-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="4000",SessionID="0x7f0fb4b86858",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.22/5888",Challenge="74d20463",ReceivedChallenge="74d20463",ReceivedHash="61abacc0bd992c91d59393f0978f29de"
\[2019-12-10 14:13:39\] NOTICE\[2839\] chan_sip.c: Registration from '"4000" \' failed for '77.247.110.22:5888' - Wrong password
\[2019-12-10 14:13:39\] SECURITY\[2857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-12-10T14:13:39.994-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="4000",SessionID="0x7f0fb4389e58",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UD

05.09.2019 19:12:28 Connection to port 5060 blocked by firewall

Automatic report - Port Scan Attack

MultiHost/MultiPort Probe, Scan, Hack -

" "

08/21/2019-12:50:28.478302 77.247.110.22 Protocol: 17 ET CINS Active Threat Intelligence Poor Reputation IP group 75

Trying ports that it shouldn't be.

12.08.2019 20:44:33 Connection to port 5060 blocked by firewall

08/08/2019-18:46:35.498635 77.247.110.22 Protocol: 17 ET CINS Active Threat Intelligence Poor Reputation IP group 75

Trying to (more than 3 packets) bruteforce (not in use) VoIP/SIP port 5060

Jul 31 15:25:09 localhost kernel: [15845302.618631] iptables_INPUT_denied: IN=eth0 OUT= MAC=f2:3c:91:84:83:95:84:78:ac:57:aa:c1:08:00 SRC=77.247.110.22 DST=[mungedIP2] LEN=438 TOS=0x08 PREC=0x20 TTL=54 ID=3227 DF PROTO=UDP SPT=5101 DPT=5060 LEN=418 
Jul 31 15:25:09 localhost kernel: [15845302.618662] iptables_INPUT_denied: IN=eth0 OUT= MAC=f2:3c:91:84:83:95:84:78:ac:57:aa:c1:08:00 SRC=77.247.110.22 DST=[mungedIP2] LEN=438 TOS=0x08 PREC=0x20 TTL=54 ID=3227 DF PROTO=UDP SPT=5101 DPT=5060 LEN=418 
Jul 31 17:57:07 localhost kernel: [15854420.779624] iptables_INPUT_denied: IN=eth0 OUT= MAC=f2:3c:91:84:83:95:84:78:ac:57:a8:41:08:00 SRC=77.247.110.22 DST=[mungedIP2] LEN=437 TOS=0x08 PREC=0x20 TTL=54 ID=48223 DF PROTO=UDP SPT=5171 DPT=5060 LEN=417 
Jul 31 17:57:07 localhost kernel: [15854420.779649] iptables_INPUT_denied: IN=eth0 OUT= MAC=f2:3c:91:84:83:95:84:78:ac:57:a8:41:08:00 SRC=77.247.110.22 DST=[mungedIP2] LEN=437 TOS=0x08 PREC=0x20 TTL=54 ID=48223 DF PROTO=UDP SPT=5171 DPT=5060 LEN=417

\[2019-06-23 13:56:13\] NOTICE\[1849\] chan_sip.c: Registration from '"1" \' failed for '77.247.110.22:6061' - Wrong password
\[2019-06-23 13:56:13\] SECURITY\[1857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-06-23T13:56:13.286-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1",SessionID="0x7fc424131548",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.22/6061",Challenge="2a004e98",ReceivedChallenge="2a004e98",ReceivedHash="10c7f6167f7d2250a78ea1d2e4383c49"
\[2019-06-23 13:56:13\] NOTICE\[1849\] chan_sip.c: Registration from '"1" \' failed for '77.247.110.22:6061' - Wrong password
\[2019-06-23 13:56:13\] SECURITY\[1857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-06-23T13:56:13.386-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1",SessionID="0x7fc4243d46f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.22/60

\[2019-06-22 23:03:05\] NOTICE\[1849\] chan_sip.c: Registration from '"100" \' failed for '77.247.110.22:5710' - Wrong password
\[2019-06-22 23:03:05\] SECURITY\[1857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-06-22T23:03:05.453-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7fc424009a28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.22/5710",Challenge="5a39aeac",ReceivedChallenge="5a39aeac",ReceivedHash="3a90a79c3c63d1c57faabe8cc4f99c81"
\[2019-06-22 23:03:05\] NOTICE\[1849\] chan_sip.c: Registration from '"100" \' failed for '77.247.110.22:5710' - Wrong password
\[2019-06-22 23:03:05\] SECURITY\[1857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-06-22T23:03:05.567-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7fc42427dd38",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.2

\[2019-06-21 21:17:36\] NOTICE\[2304\] chan_sip.c: Registration from '"801" \' failed for '77.247.110.22:5154' - Wrong password
\[2019-06-21 21:17:36\] SECURITY\[2312\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-06-21T21:17:36.467-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="801",SessionID="0x7fea9c909f18",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.22/5154",Challenge="1576c99d",ReceivedChallenge="1576c99d",ReceivedHash="77e5062f422fc61128c38dbf92734d89"
\[2019-06-21 21:17:36\] NOTICE\[2304\] chan_sip.c: Registration from '"801" \' failed for '77.247.110.22:5154' - Wrong password
\[2019-06-21 21:17:36\] SECURITY\[2312\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-06-21T21:17:36.567-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="801",SessionID="0x7fea9c709538",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.2

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

SSH bruteforce

detected by Fail2Ban

Dec  5 05:57:40 andromeda sshd\[13674\]: Invalid user topher from 61.175.134.190 port 57133
Dec  5 05:57:40 andromeda sshd\[13674\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.175.134.190
Dec  5 05:57:42 andromeda sshd\[13674\]: Failed password for invalid user topher from 61.175.134.190 port 57133 ssh2

Lines containing failures of 109.68.172.62 (max 1000)
Dec  5 01:06:16 Server sshd[12025]: Did not receive identification string from 109.68.172.62 port 55174
Dec  5 01:06:21 Server sshd[12026]: Invalid user service from 109.68.172.62 port 55100
Dec  5 01:06:21 Server sshd[12026]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=109.68.172.62
Dec  5 01:06:24 Server sshd[12026]: Failed password for invalid user service from 109.68.172.62 port 55100 ssh2
Dec  5 01:06:24 Server sshd[12026]: Connection closed by invalid user service 109.68.172.62 port 55100 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=109.68.172.62

Unauthorised access (Dec  4) SRC=200.54.12.90 LEN=40 TOS=0x10 PREC=0x40 TTL=50 ID=12495 TCP DPT=23 WINDOW=46737 SYN

Fail2Ban Ban Triggered

Dec  4 20:16:17 MainVPS sshd[3350]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.18.221  user=mysql
Dec  4 20:16:19 MainVPS sshd[3350]: Failed password for mysql from 148.70.18.221 port 53866 ssh2
Dec  4 20:22:46 MainVPS sshd[14838]: Invalid user test from 148.70.18.221 port 60384
Dec  4 20:22:47 MainVPS sshd[14838]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.18.221
Dec  4 20:22:46 MainVPS sshd[14838]: Invalid user test from 148.70.18.221 port 60384
Dec  4 20:22:48 MainVPS sshd[14838]: Failed password for invalid user test from 148.70.18.221 port 60384 ssh2
...

Dec  5 01:17:30 vpn01 sshd[3284]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.54.231.79
Dec  5 01:17:31 vpn01 sshd[3284]: Failed password for invalid user service from 106.54.231.79 port 53584 ssh2
...

Dec  5 07:46:16 server sshd\[22348\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.ip-176-31-191.eu  user=nobody
Dec  5 07:46:18 server sshd\[22348\]: Failed password for nobody from 176.31.191.61 port 46912 ssh2
Dec  5 07:52:32 server sshd\[23942\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.ip-176-31-191.eu  user=root
Dec  5 07:52:34 server sshd\[23942\]: Failed password for root from 176.31.191.61 port 44320 ssh2
Dec  5 07:57:38 server sshd\[25284\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.ip-176-31-191.eu  user=root
...

Dec  4 12:12:45 kapalua sshd\[30205\]: Invalid user kenyang from 93.152.159.11
Dec  4 12:12:45 kapalua sshd\[30205\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=93.152.159.11
Dec  4 12:12:48 kapalua sshd\[30205\]: Failed password for invalid user kenyang from 93.152.159.11 port 49820 ssh2
Dec  4 12:18:34 kapalua sshd\[30817\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=93.152.159.11  user=root
Dec  4 12:18:36 kapalua sshd\[30817\]: Failed password for root from 93.152.159.11 port 60476 ssh2

Dec  4 22:37:11 heissa sshd\[1324\]: Invalid user odoo9 from 51.83.42.138 port 53704
Dec  4 22:37:11 heissa sshd\[1324\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.ip-51-83-42.eu
Dec  4 22:37:13 heissa sshd\[1324\]: Failed password for invalid user odoo9 from 51.83.42.138 port 53704 ssh2
Dec  4 22:44:55 heissa sshd\[2735\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.ip-51-83-42.eu  user=mysql
Dec  4 22:44:57 heissa sshd\[2735\]: Failed password for mysql from 51.83.42.138 port 48276 ssh2

Dec  4 18:50:48 wbs sshd\[32722\]: Invalid user bradstreet from 184.64.13.67
Dec  4 18:50:48 wbs sshd\[32722\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=s010650e549cedc71.cg.shawcable.net
Dec  4 18:50:50 wbs sshd\[32722\]: Failed password for invalid user bradstreet from 184.64.13.67 port 36538 ssh2
Dec  4 18:57:26 wbs sshd\[946\]: Invalid user winifred from 184.64.13.67
Dec  4 18:57:26 wbs sshd\[946\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=s010650e549cedc71.cg.shawcable.net

Dec  5 00:30:42 Ubuntu-1404-trusty-64-minimal sshd\[28025\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=41.93.32.88  user=root
Dec  5 00:30:45 Ubuntu-1404-trusty-64-minimal sshd\[28025\]: Failed password for root from 41.93.32.88 port 36032 ssh2
Dec  5 00:38:40 Ubuntu-1404-trusty-64-minimal sshd\[31645\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=41.93.32.88  user=root
Dec  5 00:38:42 Ubuntu-1404-trusty-64-minimal sshd\[31645\]: Failed password for root from 41.93.32.88 port 51996 ssh2
Dec  5 00:46:14 Ubuntu-1404-trusty-64-minimal sshd\[8016\]: Invalid user atmosphere from 41.93.32.88
Dec  5 00:46:14 Ubuntu-1404-trusty-64-minimal sshd\[8016\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=41.93.32.88

2019-12-04T21:32:40.673453abusebot-5.cloudsearch.cf sshd\[455\]: Invalid user webadmin from 106.54.139.117 port 59020

$f2bV_matches