\[2019-06-29 23:25:34\] NOTICE\[4808\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '"8000" \' failed for '77.247.110.176:5343' \(callid: 3928490572\) - Failed to authenticate
\[2019-06-29 23:25:34\] SECURITY\[3671\] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2019-06-29T23:25:34.100+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="\",SessionID="3928490572",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/77.247.110.176/5343",Challenge="1561843534/5b48900da33fd9cde4154c4dc059d06b",Response="a3b1d3e8beee135f801c18e160d7ee16",ExpectedResponse=""
\[2019-06-29 23:25:34\] NOTICE\[9010\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '"8000" \' failed for '77.247.110.176:5343' \(callid: 2284815442\) - No matching endpoint found after 5 tries in 1.645 ms
\[2019-06-29 23:25:34\] SECURITY\[3671\] res_security_log.c: SecurityEvent="InvalidAccountID",EventTV="2019-06-

\[2019-06-29 10:39:34\] NOTICE\[6698\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '"700" \' failed for '77.247.110.176:5377' \(callid: 282471707\) - Failed to authenticate
\[2019-06-29 10:39:34\] SECURITY\[3671\] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2019-06-29T10:39:34.265+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="\",SessionID="282471707",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/77.247.110.176/5377",Challenge="1561797574/f6f08a2965fb7f4b87ce66a5ad89d963",Response="3b50ff5dd3dd0fcead06e057c443a168",ExpectedResponse=""
\[2019-06-29 10:39:34\] NOTICE\[5109\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '"700" \' failed for '77.247.110.176:5377' \(callid: 1894956107\) - No matching endpoint found after 5 tries in 1.677 ms
\[2019-06-29 10:39:34\] SECURITY\[3671\] res_security_log.c: SecurityEvent="InvalidAccountID",EventTV="2019-06-29T10:

\[2019-06-29 05:40:12\] NOTICE\[5109\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '"300" \' failed for '77.247.110.176:5249' \(callid: 355578217\) - Failed to authenticate
\[2019-06-29 05:40:12\] SECURITY\[3671\] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2019-06-29T05:40:12.024+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="\",SessionID="355578217",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/77.247.110.176/5249",Challenge="1561779611/fa5443bdb6f27627e5b67737b79fa81d",Response="6dd7035b4226e12be5f36ab5fe637b9e",ExpectedResponse=""
\[2019-06-29 05:40:12\] NOTICE\[6698\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '"300" \' failed for '77.247.110.176:5249' \(callid: 2062694064\) - No matching endpoint found after 5 tries in 2.776 ms
\[2019-06-29 05:40:12\] SECURITY\[3671\] res_security_log.c: SecurityEvent="InvalidAccountID",EventTV="2019-06-29T05:

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

\[2019-10-15 20:46:06\] SECURITY\[1898\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-10-15T20:46:06.588-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="011442922550332",SessionID="0x7fc3ac686538",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.53.88.35/54248",ACLName="no_extension_match"
\[2019-10-15 20:48:51\] SECURITY\[1898\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-10-15T20:48:51.386-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9011442922550332",SessionID="0x7fc3acecc838",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.53.88.35/49598",ACLName="no_extension_match"
\[2019-10-15 20:51:48\] SECURITY\[1898\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-10-15T20:51:48.525-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9442922550332",SessionID="0x7fc3ac00c388",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.53.88.35/51757",ACLName="no_extensi

Oct 15 11:15:22 tdfoods sshd\[11704\]: Invalid user divya from 51.83.77.224
Oct 15 11:15:22 tdfoods sshd\[11704\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=224.ip-51-83-77.eu
Oct 15 11:15:24 tdfoods sshd\[11704\]: Failed password for invalid user divya from 51.83.77.224 port 48580 ssh2
Oct 15 11:19:18 tdfoods sshd\[12028\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=224.ip-51-83-77.eu  user=root
Oct 15 11:19:20 tdfoods sshd\[12028\]: Failed password for root from 51.83.77.224 port 59394 ssh2

2019-10-15T19:51:26.978366abusebot-3.cloudsearch.cf sshd\[26698\]: Invalid user tajnehaslo from 159.89.155.148 port 46042

Oct 15 18:32:55 home sshd[20824]: Invalid user cpap from 125.212.201.8 port 62633
Oct 15 18:32:55 home sshd[20824]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=125.212.201.8
Oct 15 18:32:55 home sshd[20824]: Invalid user cpap from 125.212.201.8 port 62633
Oct 15 18:32:57 home sshd[20824]: Failed password for invalid user cpap from 125.212.201.8 port 62633 ssh2
Oct 15 18:38:15 home sshd[20851]: Invalid user ting from 125.212.201.8 port 5732
Oct 15 18:38:15 home sshd[20851]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=125.212.201.8
Oct 15 18:38:15 home sshd[20851]: Invalid user ting from 125.212.201.8 port 5732
Oct 15 18:38:17 home sshd[20851]: Failed password for invalid user ting from 125.212.201.8 port 5732 ssh2
Oct 15 18:43:01 home sshd[20943]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=125.212.201.8  user=root
Oct 15 18:43:03 home sshd[20943]: Failed password for root from 12

Automatic report - Port Scan Attack

Oct 14 18:21:02 euve59663 sshd[7756]: pam_unix(sshd:auth): authenticati=
on failure; logname=3D uid=3D0 euid=3D0 tty=3Dssh ruser=3D rhost=3D118.=
25.150.90  user=3Duucp
Oct 14 18:21:04 euve59663 sshd[7756]: Failed password for uucp from 118=
.25.150.90 port 43493 ssh2
Oct 14 18:21:04 euve59663 sshd[7756]: Received disconnect from 118.25.1=
50.90: 11: Bye Bye [preauth]
Oct 14 18:33:25 euve59663 sshd[2649]: pam_unix(sshd:auth): authenticati=
on failure; logname=3D uid=3D0 euid=3D0 tty=3Dssh ruser=3D rhost=3D118.=
25.150.90  user=3Dr.r
Oct 14 18:33:27 euve59663 sshd[2649]: Failed password for r.r from 118=
.25.150.90 port 55810 ssh2
Oct 14 18:33:28 euve59663 sshd[2649]: Received disconnect from 118.25.1=
50.90: 11: Bye Bye [preauth]
Oct 14 18:38:00 euve59663 sshd[2692]: Invalid user ftp_boot from 118.25=
.150.90
Oct 14 18:38:00 euve59663 sshd[2692]: pam_unix(sshd:auth): authenticati=
on failure; logname=3D uid=3D0 euid=3D0 tty=3Dssh ruser=3D rhost=3D118.=
25.150.90=20
Oct ........
-------------------------------

$f2bV_matches

2019-10-15T21:23:00.855252abusebot-5.cloudsearch.cf sshd\[10758\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.33.39  user=root

Multiple failed RDP login attempts

fraudulent SSH attempt

2019-10-16T00:02:36.812002abusebot-4.cloudsearch.cf sshd\[31148\]: Invalid user jboss from 142.4.203.130 port 38241

Oct 15 22:54:25 icinga sshd[24960]: Failed password for root from 92.50.249.92 port 52874 ssh2
Oct 15 22:58:02 icinga sshd[25363]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=92.50.249.92
...

Oct 15 09:47:41 hanapaa sshd\[26319\]: Invalid user skfur from 51.68.174.177
Oct 15 09:47:41 hanapaa sshd\[26319\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.ip-51-68-174.eu
Oct 15 09:47:42 hanapaa sshd\[26319\]: Failed password for invalid user skfur from 51.68.174.177 port 39318 ssh2
Oct 15 09:51:40 hanapaa sshd\[26689\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.ip-51-68-174.eu  user=root
Oct 15 09:51:42 hanapaa sshd\[26689\]: Failed password for root from 51.68.174.177 port 50874 ssh2

miraniessen.de 185.93.69.14 \[15/Oct/2019:21:51:43 +0200\] "POST /wp-login.php HTTP/1.1" 200 5974 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
miraniessen.de 185.93.69.14 \[15/Oct/2019:21:51:43 +0200\] "POST /wp-login.php HTTP/1.1" 200 5974 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"

Oct 16 02:57:09 herz-der-gamer sshd[19990]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.147  user=root
Oct 16 02:57:11 herz-der-gamer sshd[19990]: Failed password for root from 222.186.180.147 port 36172 ssh2
...