[Mon Mar 23 22:44:29.430470 2020] [:error] [pid 25305:tid 140519759939328] [client 87.250.224.83:37128] [client 87.250.224.83] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [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 "XnjZXUO@yxpJrJpacVIAngAAAtE"]
...

Mar 23 13:16:51 ny01 sshd[4575]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=198.199.101.113
Mar 23 13:16:52 ny01 sshd[4575]: Failed password for invalid user xiaoyu from 198.199.101.113 port 35572 ssh2
Mar 23 13:20:48 ny01 sshd[6191]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=198.199.101.113

20 attempts against mh-ssh on cloud

2020-03-23T19:32:36.701010wiz-ks3 sshd[20518]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=130.61.108.58  user=root
2020-03-23T19:32:39.092369wiz-ks3 sshd[20518]: Failed password for root from 130.61.108.58 port 43155 ssh2
2020-03-23T19:32:52.554675wiz-ks3 sshd[20522]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=130.61.108.58  user=root
2020-03-23T19:32:54.143044wiz-ks3 sshd[20522]: Failed password for root from 130.61.108.58 port 36576 ssh2
2020-03-23T19:33:08.438595wiz-ks3 sshd[20526]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=130.61.108.58  user=root
2020-03-23T19:33:10.890100wiz-ks3 sshd[20526]: Failed password for root from 130.61.108.58 port 58232 ssh2
2020-03-23T19:33:26.035035wiz-ks3 sshd[20532]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=130.61.108.58  user=root
2020-03-23T19:33:28.290847wiz-ks3 sshd[20532]: Failed password

Attempt to attack host OS, exploiting network vulnerabilities, on 23-03-2020 15:45:09.

Mar 23 21:19:32 v22018086721571380 sshd[25323]: Failed password for invalid user ir from 113.161.1.111 port 46976 ssh2
Mar 23 21:22:56 v22018086721571380 sshd[25991]: Failed password for invalid user cacti from 113.161.1.111 port 45766 ssh2

Mar 23 19:51:30 ns382633 sshd\[25367\]: Invalid user student from 129.204.21.49 port 40620
Mar 23 19:51:30 ns382633 sshd\[25367\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.204.21.49
Mar 23 19:51:32 ns382633 sshd\[25367\]: Failed password for invalid user student from 129.204.21.49 port 40620 ssh2
Mar 23 19:54:39 ns382633 sshd\[25655\]: Invalid user netsplit from 129.204.21.49 port 49694
Mar 23 19:54:39 ns382633 sshd\[25655\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.204.21.49

xmlrpc attack

Mar 23 16:44:56 mout sshd[28004]: Invalid user teste from 192.241.128.214 port 45219

Automatic report - Port Scan Attack

2020-03-23 10:24:50 H=([178.89.220.120]) [178.89.220.120]:10134 I=[192.147.25.65]:25 F= rejected RCPT : Sender verify failed
2020-03-23 10:27:11 H=([178.89.220.120]) [178.89.220.120]:62287 I=[192.147.25.65]:25 F= rejected RCPT : Sender verify failed
2020-03-23 10:44:43 H=([178.89.220.120]) [178.89.220.120]:42583 I=[192.147.25.65]:25 F= rejected RCPT : Sender verify failed
...

(sshd) Failed SSH login from 51.161.51.147 (CA/Canada/ip147.ip-51-161-51.net): 3 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Mar 23 15:38:54 andromeda sshd[8157]: Invalid user grazia from 51.161.51.147 port 38500
Mar 23 15:38:56 andromeda sshd[8157]: Failed password for invalid user grazia from 51.161.51.147 port 38500 ssh2
Mar 23 15:45:09 andromeda sshd[8534]: Invalid user paintball from 51.161.51.147 port 34436

2020-03-23T16:41:56.197090v22018076590370373 sshd[29764]: Invalid user thysell from 212.64.10.105 port 37558
2020-03-23T16:41:56.203062v22018076590370373 sshd[29764]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=212.64.10.105
2020-03-23T16:41:56.197090v22018076590370373 sshd[29764]: Invalid user thysell from 212.64.10.105 port 37558
2020-03-23T16:41:57.822924v22018076590370373 sshd[29764]: Failed password for invalid user thysell from 212.64.10.105 port 37558 ssh2
2020-03-23T16:44:39.955000v22018076590370373 sshd[4904]: Invalid user john from 212.64.10.105 port 39616
...

Mar 23 19:51:04 minden010 sshd[20489]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=189.79.111.149
Mar 23 19:51:06 minden010 sshd[20489]: Failed password for invalid user cc from 189.79.111.149 port 47374 ssh2
Mar 23 19:54:04 minden010 sshd[21598]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=189.79.111.149
...

Invalid user evolution from 103.89.176.74 port 55690