Jun 29 03:27:03 server sshd[32439]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.152
...

"Remote Command Execution: Direct Unix Command Execution - Matched Data: echo found within ARGS:b4dboy: echo \x22xbshell\x22;"

"Remote Command Execution: Direct Unix Command Execution - Matched Data: echo found within ARGS:b4dboy: echo \x22xbshell\x22;"

"Remote Command Execution: Direct Unix Command Execution - Matched Data: echo found within ARGS:b4dboy: echo \x22xbshell\x22;"

(sshd) Failed SSH login from 106.12.208.211 (CN/China/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Sep 28 13:27:52 server2 sshd[10834]: Invalid user git from 106.12.208.211
Sep 28 13:27:52 server2 sshd[10834]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.211 
Sep 28 13:27:53 server2 sshd[10834]: Failed password for invalid user git from 106.12.208.211 port 47796 ssh2
Sep 28 13:35:17 server2 sshd[25064]: Invalid user info from 106.12.208.211
Sep 28 13:35:17 server2 sshd[25064]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.211

sshd: Failed password for invalid user .... from 106.12.208.211 port 42528 ssh2 (5 attempts)

Invalid user admin from 106.12.208.99 port 37336

2020-09-14T08:18:38.331142ks3355764 sshd[29433]: Invalid user admin from 106.12.208.99 port 44104
2020-09-14T08:18:40.419553ks3355764 sshd[29433]: Failed password for invalid user admin from 106.12.208.99 port 44104 ssh2
...

2020-09-13T19:52:57.693694abusebot-8.cloudsearch.cf sshd[21953]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=root
2020-09-13T19:52:59.035021abusebot-8.cloudsearch.cf sshd[21953]: Failed password for root from 106.12.208.99 port 54532 ssh2
2020-09-13T19:54:55.105526abusebot-8.cloudsearch.cf sshd[22007]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=root
2020-09-13T19:54:56.647778abusebot-8.cloudsearch.cf sshd[22007]: Failed password for root from 106.12.208.99 port 41892 ssh2
2020-09-13T19:56:52.973883abusebot-8.cloudsearch.cf sshd[22013]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=root
2020-09-13T19:56:55.243511abusebot-8.cloudsearch.cf sshd[22013]: Failed password for root from 106.12.208.99 port 53252 ssh2
2020-09-13T19:58:43.410969abusebot-8.cloudsearch.cf sshd[22020]: pam_unix(sshd:auth): authe
...

Sep  7 21:53:59 v26 sshd[27516]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=r.r
Sep  7 21:54:01 v26 sshd[27516]: Failed password for r.r from 106.12.208.99 port 42106 ssh2
Sep  7 21:54:01 v26 sshd[27516]: Received disconnect from 106.12.208.99 port 42106:11: Bye Bye [preauth]
Sep  7 21:54:01 v26 sshd[27516]: Disconnected from 106.12.208.99 port 42106 [preauth]
Sep  7 22:11:10 v26 sshd[29162]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=r.r
Sep  7 22:11:12 v26 sshd[29162]: Failed password for r.r from 106.12.208.99 port 45240 ssh2
Sep  7 22:11:12 v26 sshd[29162]: Received disconnect from 106.12.208.99 port 45240:11: Bye Bye [preauth]
Sep  7 22:11:12 v26 sshd[29162]: Disconnected from 106.12.208.99 port 45240 [preauth]
Sep  7 22:14:05 v26 sshd[29528]: Invalid user januario from 106.12.208.99 port 57512
Sep  7 22:14:05 v26 sshd[29528]: pam_unix(s........
-------------------------------

Sep  7 21:53:59 v26 sshd[27516]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=r.r
Sep  7 21:54:01 v26 sshd[27516]: Failed password for r.r from 106.12.208.99 port 42106 ssh2
Sep  7 21:54:01 v26 sshd[27516]: Received disconnect from 106.12.208.99 port 42106:11: Bye Bye [preauth]
Sep  7 21:54:01 v26 sshd[27516]: Disconnected from 106.12.208.99 port 42106 [preauth]
Sep  7 22:11:10 v26 sshd[29162]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=r.r
Sep  7 22:11:12 v26 sshd[29162]: Failed password for r.r from 106.12.208.99 port 45240 ssh2
Sep  7 22:11:12 v26 sshd[29162]: Received disconnect from 106.12.208.99 port 45240:11: Bye Bye [preauth]
Sep  7 22:11:12 v26 sshd[29162]: Disconnected from 106.12.208.99 port 45240 [preauth]
Sep  7 22:14:05 v26 sshd[29528]: Invalid user januario from 106.12.208.99 port 57512
Sep  7 22:14:05 v26 sshd[29528]: pam_unix(s........
-------------------------------

Sep  7 21:53:59 v26 sshd[27516]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=r.r
Sep  7 21:54:01 v26 sshd[27516]: Failed password for r.r from 106.12.208.99 port 42106 ssh2
Sep  7 21:54:01 v26 sshd[27516]: Received disconnect from 106.12.208.99 port 42106:11: Bye Bye [preauth]
Sep  7 21:54:01 v26 sshd[27516]: Disconnected from 106.12.208.99 port 42106 [preauth]
Sep  7 22:11:10 v26 sshd[29162]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=r.r
Sep  7 22:11:12 v26 sshd[29162]: Failed password for r.r from 106.12.208.99 port 45240 ssh2
Sep  7 22:11:12 v26 sshd[29162]: Received disconnect from 106.12.208.99 port 45240:11: Bye Bye [preauth]
Sep  7 22:11:12 v26 sshd[29162]: Disconnected from 106.12.208.99 port 45240 [preauth]
Sep  7 22:14:05 v26 sshd[29528]: Invalid user januario from 106.12.208.99 port 57512
Sep  7 22:14:05 v26 sshd[29528]: pam_unix(s........
-------------------------------

Aug 31 05:47:29 web1 sshd\[29574\]: Invalid user status from 106.12.208.211
Aug 31 05:47:29 web1 sshd\[29574\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.211
Aug 31 05:47:31 web1 sshd\[29574\]: Failed password for invalid user status from 106.12.208.211 port 51214 ssh2
Aug 31 05:51:36 web1 sshd\[29825\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.211  user=root
Aug 31 05:51:38 web1 sshd\[29825\]: Failed password for root from 106.12.208.211 port 44366 ssh2

Aug 28 20:24:31 home sshd[2165499]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.211 
Aug 28 20:24:31 home sshd[2165499]: Invalid user zhang from 106.12.208.211 port 53772
Aug 28 20:24:33 home sshd[2165499]: Failed password for invalid user zhang from 106.12.208.211 port 53772 ssh2
Aug 28 20:27:28 home sshd[2166529]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.211  user=root
Aug 28 20:27:29 home sshd[2166529]: Failed password for root from 106.12.208.211 port 37734 ssh2
...

Aug 28 03:35:47 v22019038103785759 sshd\[13367\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99  user=root
Aug 28 03:35:49 v22019038103785759 sshd\[13367\]: Failed password for root from 106.12.208.99 port 58292 ssh2
Aug 28 03:40:05 v22019038103785759 sshd\[13831\]: Invalid user usertest from 106.12.208.99 port 44122
Aug 28 03:40:05 v22019038103785759 sshd\[13831\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.208.99
Aug 28 03:40:07 v22019038103785759 sshd\[13831\]: Failed password for invalid user usertest from 106.12.208.99 port 44122 ssh2
...

ssh brute force

Oct  2 05:54:46 MK-Soft-VM6 sshd[16999]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=95.85.60.251 
Oct  2 05:54:48 MK-Soft-VM6 sshd[16999]: Failed password for invalid user ucpss from 95.85.60.251 port 38062 ssh2
...

$f2bV_matches

Oct  2 05:54:38 ovpn sshd\[16362\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.180  user=root
Oct  2 05:54:40 ovpn sshd\[16362\]: Failed password for root from 222.186.173.180 port 16966 ssh2
Oct  2 05:54:53 ovpn sshd\[16362\]: Failed password for root from 222.186.173.180 port 16966 ssh2
Oct  2 05:54:58 ovpn sshd\[16362\]: Failed password for root from 222.186.173.180 port 16966 ssh2
Oct  2 05:55:06 ovpn sshd\[16448\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.180  user=root

10/02/2019-03:21:26.059050 185.216.140.252 Protocol: 6 ET DROP Dshield Block Listed Source group 1

2019-09-30T22:11:30.576709srv.ecualinux.com sshd[24838]: Invalid user plesk from 118.178.119.198 port 53328
2019-09-30T22:11:30.579744srv.ecualinux.com sshd[24838]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.178.119.198
2019-09-30T22:11:32.466848srv.ecualinux.com sshd[24838]: Failed password for invalid user plesk from 118.178.119.198 port 53328 ssh2
2019-09-30T22:15:42.193744srv.ecualinux.com sshd[25360]: Invalid user xiuzuan from 118.178.119.198 port 34958
2019-09-30T22:15:42.196467srv.ecualinux.com sshd[25360]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.178.119.198

........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=118.178.119.198

2019-10-02T03:55:31.760687abusebot.cloudsearch.cf sshd\[8792\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.17  user=root

\[2019-10-01 21:05:34\] NOTICE\[1948\] chan_sip.c: Registration from '\' failed for '77.247.110.202:64838' - Wrong password
\[2019-10-01 21:05:34\] SECURITY\[2006\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-10-01T21:05:34.531-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1792",SessionID="0x7f1e1c4a7e48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.202/64838",Challenge="49b9d6d8",ReceivedChallenge="49b9d6d8",ReceivedHash="1c152cb3552149bb5fd7adb4bd2610cf"
\[2019-10-01 21:05:34\] NOTICE\[1948\] chan_sip.c: Registration from '\' failed for '77.247.110.202:64829' - Wrong password
\[2019-10-01 21:05:34\] SECURITY\[2006\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-10-01T21:05:34.532-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1792",SessionID="0x7f1e1c3735b8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.202/64829",

Oct  2 01:11:28 hcbbdb sshd\[19664\]: Invalid user ftpuser from 45.80.65.83
Oct  2 01:11:28 hcbbdb sshd\[19664\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.80.65.83
Oct  2 01:11:30 hcbbdb sshd\[19664\]: Failed password for invalid user ftpuser from 45.80.65.83 port 43618 ssh2
Oct  2 01:15:56 hcbbdb sshd\[20196\]: Invalid user ram from 45.80.65.83
Oct  2 01:15:56 hcbbdb sshd\[20196\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.80.65.83

$f2bV_matches

Oct  2 06:50:15 www2 sshd\[31332\]: Invalid user chu from 113.247.250.228Oct  2 06:50:17 www2 sshd\[31332\]: Failed password for invalid user chu from 113.247.250.228 port 60902 ssh2Oct  2 06:54:57 www2 sshd\[31642\]: Invalid user mcserver from 113.247.250.228
...

Oct  1 18:08:05 wbs sshd\[26637\]: Invalid user print from 188.166.251.87
Oct  1 18:08:05 wbs sshd\[26637\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.166.251.87
Oct  1 18:08:07 wbs sshd\[26637\]: Failed password for invalid user print from 188.166.251.87 port 35275 ssh2
Oct  1 18:12:48 wbs sshd\[27183\]: Invalid user dingch from 188.166.251.87
Oct  1 18:12:48 wbs sshd\[27183\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.166.251.87

19/10/1@17:00:24: FAIL: IoT-Telnet address from=37.6.110.61
...

10/02/2019-05:55:01.186249 185.209.0.33 Protocol: 6 ET DROP Dshield Block Listed Source group 1

2019-10-02T01:13:11.215564shield sshd\[25577\]: Invalid user dave from 37.187.22.227 port 35442
2019-10-02T01:13:11.218700shield sshd\[25577\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ks3357677.kimsufi.com
2019-10-02T01:13:13.090662shield sshd\[25577\]: Failed password for invalid user dave from 37.187.22.227 port 35442 ssh2
2019-10-02T01:17:17.395547shield sshd\[26026\]: Invalid user wwwrun from 37.187.22.227 port 47916
2019-10-02T01:17:17.400119shield sshd\[26026\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ks3357677.kimsufi.com

Oct  2 05:56:17 piServer sshd[3794]: Failed password for root from 222.186.190.65 port 31572 ssh2
Oct  2 05:56:19 piServer sshd[3794]: Failed password for root from 222.186.190.65 port 31572 ssh2
Oct  2 05:56:21 piServer sshd[3794]: Failed password for root from 222.186.190.65 port 31572 ssh2
...