2020-03-19T09:23:43.118847abusebot-6.cloudsearch.cf sshd[31835]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
2020-03-19T09:23:45.190095abusebot-6.cloudsearch.cf sshd[31835]: Failed password for root from 157.230.123.253 port 58952 ssh2
2020-03-19T09:23:58.318416abusebot-6.cloudsearch.cf sshd[31850]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
2020-03-19T09:24:00.114100abusebot-6.cloudsearch.cf sshd[31850]: Failed password for root from 157.230.123.253 port 38430 ssh2
2020-03-19T09:24:13.666366abusebot-6.cloudsearch.cf sshd[31865]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
2020-03-19T09:24:16.189351abusebot-6.cloudsearch.cf sshd[31865]: Failed password for root from 157.230.123.253 port 46104 ssh2
2020-03-19T09:24:28.258681abusebot-6.cloudsearch.cf sshd[31879]: Invalid user a
...

Fail2Ban Ban Triggered

Mar 18 12:59:49 Ubuntu-1404-trusty-64-minimal sshd\[27771\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar 18 12:59:51 Ubuntu-1404-trusty-64-minimal sshd\[27771\]: Failed password for root from 157.230.123.253 port 44888 ssh2
Mar 18 13:00:03 Ubuntu-1404-trusty-64-minimal sshd\[28533\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar 18 13:00:05 Ubuntu-1404-trusty-64-minimal sshd\[28533\]: Failed password for root from 157.230.123.253 port 49600 ssh2
Mar 18 13:00:17 Ubuntu-1404-trusty-64-minimal sshd\[31788\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root

Mar 17 02:10:32 vpn01 sshd[19600]: Failed password for root from 157.230.123.253 port 46854 ssh2
...

Mar 16 17:02:01 localhost sshd\[2305\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar 16 17:02:03 localhost sshd\[2305\]: Failed password for root from 157.230.123.253 port 36324 ssh2
Mar 16 17:02:15 localhost sshd\[2313\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar 16 17:02:17 localhost sshd\[2313\]: Failed password for root from 157.230.123.253 port 41886 ssh2
Mar 16 17:02:29 localhost sshd\[2320\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
...

Mar 16 05:06:47 debian sshd[14372]: Unable to negotiate with 157.230.123.253 port 37804: no matching key exchange method found. Their offer: diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 [preauth]
Mar 16 05:07:01 debian sshd[14374]: Unable to negotiate with 157.230.123.253 port 43658: no matching key exchange method found. Their offer: diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 [preauth]
...

Mar 12 15:17:58 NPSTNNYC01T sshd[22463]: Failed password for root from 157.230.123.253 port 47738 ssh2
Mar 12 15:18:12 NPSTNNYC01T sshd[22470]: Failed password for root from 157.230.123.253 port 56212 ssh2
...

Mar 12 01:18:03 MainVPS sshd[28611]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar 12 01:18:05 MainVPS sshd[28611]: Failed password for root from 157.230.123.253 port 37160 ssh2
Mar 12 01:18:17 MainVPS sshd[29210]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar 12 01:18:20 MainVPS sshd[29210]: Failed password for root from 157.230.123.253 port 45676 ssh2
Mar 12 01:18:31 MainVPS sshd[29362]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar 12 01:18:33 MainVPS sshd[29362]: Failed password for root from 157.230.123.253 port 54172 ssh2
...

Mar 10 14:49:50 stark sshd[16112]: Received disconnect from 157.230.123.253 port 50410:11: Normal Shutdown, Thank you for playing [preauth]
Mar 10 14:50:04 stark sshd[16117]: User root not allowed because account is locked
Mar 10 14:50:04 stark sshd[16117]: Received disconnect from 157.230.123.253 port 58514:11: Normal Shutdown, Thank you for playing [preauth]
Mar 10 14:50:19 stark sshd[16119]: Invalid user admin from 157.230.123.253

Mar  8 22:39:43 tdfoods sshd\[18193\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar  8 22:39:45 tdfoods sshd\[18193\]: Failed password for root from 157.230.123.253 port 58066 ssh2
Mar  8 22:39:57 tdfoods sshd\[18220\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar  8 22:39:59 tdfoods sshd\[18220\]: Failed password for root from 157.230.123.253 port 38456 ssh2
Mar  8 22:40:12 tdfoods sshd\[18247\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root

Mar  8 03:18:38 tdfoods sshd\[25999\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar  8 03:18:40 tdfoods sshd\[25999\]: Failed password for root from 157.230.123.253 port 56828 ssh2
Mar  8 03:18:52 tdfoods sshd\[26015\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar  8 03:18:54 tdfoods sshd\[26015\]: Failed password for root from 157.230.123.253 port 34378 ssh2
Mar  8 03:19:05 tdfoods sshd\[26045\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root

Mar  8 08:22:43 localhost sshd\[549\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root
Mar  8 08:22:45 localhost sshd\[549\]: Failed password for root from 157.230.123.253 port 34904 ssh2
Mar  8 08:22:57 localhost sshd\[573\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.123.253  user=root

Scanning random ports - tries to find possible vulnerable services

sshd jail - ssh hack attempt

SSH-bruteforce attempts

Oct 29 07:17:19 tux-35-217 sshd\[7534\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.140  user=root
Oct 29 07:17:22 tux-35-217 sshd\[7534\]: Failed password for root from 222.186.175.140 port 54868 ssh2
Oct 29 07:17:26 tux-35-217 sshd\[7534\]: Failed password for root from 222.186.175.140 port 54868 ssh2
Oct 29 07:17:30 tux-35-217 sshd\[7534\]: Failed password for root from 222.186.175.140 port 54868 ssh2
...

Registration form abuse

1572321258 - 10/29/2019 04:54:18 Host: bzq-62-219-11-165.dcenter.bezeqint.net/62.219.11.165 Port: 5060 UDP Blocked

Oct 29 07:27:36 dedicated sshd[32692]: Invalid user admin from 118.89.27.248 port 33144

Oct 28 18:59:33 php1 sshd\[31760\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.37.130.197  user=root
Oct 28 18:59:35 php1 sshd\[31760\]: Failed password for root from 54.37.130.197 port 59792 ssh2
Oct 28 19:03:42 php1 sshd\[32599\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.37.130.197  user=root
Oct 28 19:03:44 php1 sshd\[32599\]: Failed password for root from 54.37.130.197 port 42236 ssh2
Oct 28 19:07:53 php1 sshd\[676\]: Invalid user js from 54.37.130.197
Oct 28 19:07:53 php1 sshd\[676\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.37.130.197

Oct 29 07:11:44 vps647732 sshd[11301]: Failed password for root from 177.69.118.197 port 59110 ssh2
...

Oct 29 07:19:04 h2177944 kernel: \[5205707.709707\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.65 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=28693 PROTO=TCP SPT=46757 DPT=33619 WINDOW=1024 RES=0x00 SYN URGP=0 
Oct 29 07:20:17 h2177944 kernel: \[5205781.188753\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.65 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=35692 PROTO=TCP SPT=46757 DPT=33503 WINDOW=1024 RES=0x00 SYN URGP=0 
Oct 29 07:23:34 h2177944 kernel: \[5205978.172985\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.65 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=7519 PROTO=TCP SPT=46757 DPT=34207 WINDOW=1024 RES=0x00 SYN URGP=0 
Oct 29 07:31:23 h2177944 kernel: \[5206446.748895\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.65 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=6308 PROTO=TCP SPT=46757 DPT=33605 WINDOW=1024 RES=0x00 SYN URGP=0 
Oct 29 07:31:53 h2177944 kernel: \[5206476.851660\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.65 DST=85.214.117.9 LEN=40

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2019-10-29T03:54:28.330962abusebot-8.cloudsearch.cf sshd\[17254\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=1.207.250.78  user=root

2019-10-29T03:54:42.237299abusebot-8.cloudsearch.cf sshd\[17262\]: Invalid user ubuntu from 113.28.150.73 port 15233

Oct 29 05:41:20 markkoudstaal sshd[14624]: Failed password for root from 106.12.151.201 port 46746 ssh2
Oct 29 05:46:00 markkoudstaal sshd[15093]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.151.201
Oct 29 05:46:02 markkoudstaal sshd[15093]: Failed password for invalid user postgres from 106.12.151.201 port 55334 ssh2

5x Failed Password

Oct 29 05:46:33 vps01 sshd[32139]: Failed password for root from 94.42.178.137 port 43757 ssh2

2019-10-29T05:53:29.565177tmaserv sshd\[10431\]: Failed password for invalid user 12345\*qwert from 187.103.68.218 port 49486 ssh2
2019-10-29T06:58:52.111729tmaserv sshd\[13489\]: Invalid user !@\#$%\^\&\* from 187.103.68.218 port 47096
2019-10-29T06:58:52.117265tmaserv sshd\[13489\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=187.103.68.218
2019-10-29T06:58:53.737141tmaserv sshd\[13489\]: Failed password for invalid user !@\#$%\^\&\* from 187.103.68.218 port 47096 ssh2
2019-10-29T07:15:05.306436tmaserv sshd\[14229\]: Invalid user 123pass!@\# from 187.103.68.218 port 39441
2019-10-29T07:15:05.311137tmaserv sshd\[14229\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=187.103.68.218
...

Oct 29 05:21:17 marvibiene sshd[16674]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=219.141.211.74  user=root
Oct 29 05:21:19 marvibiene sshd[16674]: Failed password for root from 219.141.211.74 port 58444 ssh2
Oct 29 05:50:11 marvibiene sshd[16843]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=219.141.211.74  user=root
Oct 29 05:50:13 marvibiene sshd[16843]: Failed password for root from 219.141.211.74 port 55295 ssh2
...