2020-06-30T19:15:07+0200 Failed SSH Authentication/Brute Force Attack. (Server 5)

Invalid user ubnt from 37.49.230.158 port 41706

2020-05-11 09:03:21,083 fail2ban.filter [745]: INFO [sasl] Found 37.49.230.158 - 2020-05-11 09:03:21

Bible

2020-10-13T06:44:21.356144news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
2020-10-13T06:44:25.395781news0 dovecot[21131]: pop3-login: Aborted login (auth failed, 1 attempts in 4 secs): user=, method=PLAIN, rip=37.49.230.238, lip=95.111.246.42, session=
2020-10-13T06:44:28.401407news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
...

2020-10-13T06:44:21.356144news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
2020-10-13T06:44:25.395781news0 dovecot[21131]: pop3-login: Aborted login (auth failed, 1 attempts in 4 secs): user=, method=PLAIN, rip=37.49.230.238, lip=95.111.246.42, session=
2020-10-13T06:44:28.401407news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
...

Dovecot Invalid User Login Attempt.

"AmooT";tag=3533393765393339313363340132313832313335333935

\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.624+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffea08d88",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="096f171f",ReceivedChallenge="096f171f",ReceivedHash="b099bdfad5869da4ae2114a56a2b4299"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.759+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffeab8148",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="233a417c",ReceivedChallenge="233a417c",ReceivedHash="0017581d14759d4b5ad3a404ed924131"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.783+0200",Severity="Error",Service="SIP",EventVersion="2",Accoun
...

\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.624+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffea08d88",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="096f171f",ReceivedChallenge="096f171f",ReceivedHash="b099bdfad5869da4ae2114a56a2b4299"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.759+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffeab8148",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="233a417c",ReceivedChallenge="233a417c",ReceivedHash="0017581d14759d4b5ad3a404ed924131"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.783+0200",Severity="Error",Service="SIP",EventVersion="2",Accoun
...

[N1.H1.VM1] Port Scanner Detected Blocked by UFW

SIP Server BruteForce Attack

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

Hellooo

Hellooo

Sep 28 15:49:19 : SSH login attempts with invalid user

Chat Spam

08/11/2019-22:46:13.784202 46.249.60.194 Protocol: 6 ET SCAN Potential SSH Scan

Aug 12 05:02:43 SilenceServices sshd[22953]: Failed password for root from 5.135.198.62 port 58485 ssh2
Aug 12 05:06:38 SilenceServices sshd[25913]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.135.198.62
Aug 12 05:06:39 SilenceServices sshd[25913]: Failed password for invalid user xxx from 5.135.198.62 port 54626 ssh2

Automatic report - Port Scan Attack

Aug 12 04:11:42 ms-srv sshd[25317]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.248.215
Aug 12 04:11:45 ms-srv sshd[25317]: Failed password for invalid user owncloud from 165.22.248.215 port 39898 ssh2

Aug 12 04:14:10 h2177944 kernel: \[3899822.150878\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.116 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=49466 PROTO=TCP SPT=53908 DPT=7822 WINDOW=1024 RES=0x00 SYN URGP=0 
Aug 12 04:16:16 h2177944 kernel: \[3899947.921356\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.116 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=52249 PROTO=TCP SPT=53917 DPT=7935 WINDOW=1024 RES=0x00 SYN URGP=0 
Aug 12 04:27:43 h2177944 kernel: \[3900634.913651\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.116 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=18288 PROTO=TCP SPT=53841 DPT=7250 WINDOW=1024 RES=0x00 SYN URGP=0 
Aug 12 04:29:05 h2177944 kernel: \[3900716.608256\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.116 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=60634 PROTO=TCP SPT=53864 DPT=7441 WINDOW=1024 RES=0x00 SYN URGP=0 
Aug 12 04:46:16 h2177944 kernel: \[3901747.579555\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.116 DST=85.214.117.9 LEN=

Aug 12 10:46:31 localhost sshd[2363]: Invalid user ftpadmin from 210.217.24.254 port 51642
Aug 12 10:46:31 localhost sshd[2363]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=210.217.24.254
Aug 12 10:46:31 localhost sshd[2363]: Invalid user ftpadmin from 210.217.24.254 port 51642
Aug 12 10:46:33 localhost sshd[2363]: Failed password for invalid user ftpadmin from 210.217.24.254 port 51642 ssh2
...

pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.220.101.34  user=root
Failed password for root from 185.220.101.34 port 43878 ssh2
Failed password for root from 185.220.101.34 port 43878 ssh2
Failed password for root from 185.220.101.34 port 43878 ssh2
Failed password for root from 185.220.101.34 port 43878 ssh2

Aug 12 05:49:06 nextcloud sshd\[13514\]: Invalid user fachbereich from 171.244.18.14
Aug 12 05:49:06 nextcloud sshd\[13514\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=171.244.18.14
Aug 12 05:49:08 nextcloud sshd\[13514\]: Failed password for invalid user fachbereich from 171.244.18.14 port 40710 ssh2
...

Fail2Ban - FTP Abuse Attempt

Aug 12 05:31:59 legacy sshd[16391]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.20.181.186
Aug 12 05:32:00 legacy sshd[16391]: Failed password for invalid user cybaek from 211.20.181.186 port 61093 ssh2
Aug 12 05:37:00 legacy sshd[16490]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.20.181.186
...

[MonAug1204:44:49.3551412019][:error][pid14490:tid47981852137216][client193.169.252.30:63070][client193.169.252.30]ModSecurity:Accessdeniedwithcode403\(phase2\).Patternmatch"\(\?:s-e-x\|zoo\(\?:ph\|f\)ilia\|giantcock\\\\\\\\b\|porn\(\?:hub\|tube\)\|sexyongpin\|\(\?:wi\(\?:f\|v\)es\?\|slaves\?\|strippers\?\|whores\?\|prostitutes\?\|under[-_.\,\\\\"\\\\\\\\'\\\\\\\\\|]\?age\|teeners\?\|lolitas\?\|animal\|dog\|couples\?\|bisexuals\?\|bicurious\|anal\|ass\|fisting\|rimming\|pussy[-_.\,\\\\"\\\\\\\\'\\\\\\\\\|]..."atARGS:pwd.[file"/usr/local/apache.ea3/conf/modsec_rules/30_asl_antispam.conf"][line"322"][id"300074"][rev"23"][msg"Atomicorp.comWAFAntiSpamRules:Spam:Adult"][data"37foundwithinARGS:pwd:analsex"][severity"WARNING"][hostname"pizzerialaregina.ch"][uri"/wp-login.php"][unique_id"XVDSodRk7lJquGKSCWJcGwAAAAk"][MonAug1204:46:52.4552012019][:error][pid14490:tid47981883655936][client193.169.252.30:62820][client193.169.252.30]ModSecurity:Accessdeniedwithcode403\(phase2\).Patternmatch"\(\

[Mon Aug 12 09:46:46.252476 2019] [:error] [pid 14411:tid 140680957478656] [client 178.154.200.50:65069] [client 178.154.200.50] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.1.1/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "792"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.1.1"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XVDTFhdwU8lNS@e-HuOMLQAAAA0"]
...

SMTP

Aug 12 05:00:10 eventyay sshd[4998]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.221.237
Aug 12 05:00:12 eventyay sshd[4998]: Failed password for invalid user chen from 178.128.221.237 port 53734 ssh2
Aug 12 05:04:37 eventyay sshd[5963]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.221.237
...