2020-02-05T16:27:24.910370+01:00 lumpi kernel: [6206298.189738] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=19368 PROTO=TCP SPT=47987 DPT=43389 WINDOW=1024 RES=0x00 SYN URGP=0 
...

02/02/2020-16:11:26.940998 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

2020-01-31T23:58:50.637235+01:00 lumpi kernel: [5801391.546504] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=61978 PROTO=TCP SPT=51380 DPT=33896 WINDOW=1024 RES=0x00 SYN URGP=0 
...

Jan 31 18:26:29 h2177944 kernel: \[3689758.319494\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.85 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=44830 PROTO=TCP SPT=51380 DPT=33884 WINDOW=1024 RES=0x00 SYN URGP=0 
Jan 31 18:26:29 h2177944 kernel: \[3689758.319510\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.85 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=44830 PROTO=TCP SPT=51380 DPT=33884 WINDOW=1024 RES=0x00 SYN URGP=0 
Jan 31 18:43:14 h2177944 kernel: \[3690763.281334\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.85 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=62023 PROTO=TCP SPT=51380 DPT=33895 WINDOW=1024 RES=0x00 SYN URGP=0 
Jan 31 18:43:14 h2177944 kernel: \[3690763.281347\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.85 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=62023 PROTO=TCP SPT=51380 DPT=33895 WINDOW=1024 RES=0x00 SYN URGP=0 
Jan 31 18:44:58 h2177944 kernel: \[3690867.589086\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=81.22.45.85 DST=85.214.117.9 LEN=4

01/29/2020-13:46:48.309187 81.22.45.85 Protocol: 6 ET SCAN NMAP -sS window 1024

ET DROP Dshield Block Listed Source group 1 - port: 3382 proto: TCP cat: Misc Attack

SNORT TCP  Port: 3389 Classtype misc-attack - ET CINS Active Threat Intelligence Poor Reputation IP group 79 - - Destination xx.xx.4.1 Port: 3389 - - Source 81.22.45.85 Port: 41604   (Listed on  zen-spamhaus MailSpike (spam wave plus L3-L5))     (422)

2019-12-23T01:17:14.131661+01:00 lumpi kernel: [2350159.553934] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=26757 PROTO=TCP SPT=55301 DPT=3309 WINDOW=1024 RES=0x00 SYN URGP=0 
...

12/22/2019-22:24:45.082395 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

12/19/2019-09:39:06.740739 81.22.45.85 Protocol: 6 ET CINS Active Threat Intelligence Poor Reputation IP group 84

2019-12-13T22:22:27.700406+01:00 lumpi kernel: [1562087.948202] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=27495 PROTO=TCP SPT=58190 DPT=33890 WINDOW=1024 RES=0x00 SYN URGP=0 
...

12/10/2019-12:16:30.857206 81.22.45.85 Protocol: 6 ET CINS Active Threat Intelligence Poor Reputation IP group 84

12/09/2019-06:10:25.207876 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

ET DROP Dshield Block Listed Source group 1 - port: 3392 proto: TCP cat: Misc Attack

11/30/2019-16:44:50.854285 81.22.45.85 Protocol: 6 ET SCAN NMAP -sS window 1024

Port scan: Attack repeated for 24 hours

11/28/2019-17:35:54.150372 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

2019-11-27T01:09:06.974212+01:00 lumpi kernel: [103313.791959] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=243 ID=56775 PROTO=TCP SPT=59789 DPT=33396 WINDOW=1024 RES=0x00 SYN URGP=0 
...

2019-11-26T19:44:09.960363+01:00 lumpi kernel: [83817.049458] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=38029 PROTO=TCP SPT=42467 DPT=3396 WINDOW=1024 RES=0x00 SYN URGP=0 
...

81.22.45.85 was recorded 67 times by 28 hosts attempting to connect to the following ports: 11111,44444,55555,33333,22222,43389,33389,53389,13389,23389,63389. Incident counter (4h, 24h, all-time): 67, 382, 5303

2019-11-20T20:03:51.849780+01:00 lumpi kernel: [4098998.988122] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=172.31.1.100 LEN=40 TOS=0x00 PREC=0x00 TTL=243 ID=46537 PROTO=TCP SPT=53209 DPT=33894 WINDOW=1024 RES=0x00 SYN URGP=0 
...

11/17/2019-17:44:28.909862 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

2019-11-14T20:49:10.095612+01:00 lumpi kernel: [3583324.306395] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=172.31.1.100 LEN=40 TOS=0x00 PREC=0x00 TTL=243 ID=25685 PROTO=TCP SPT=41799 DPT=3385 WINDOW=1024 RES=0x00 SYN URGP=0 
...

11/09/2019-23:45:43.120867 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

11/08/2019-06:06:21.172532 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

2019-10-30T22:26:58.700511+01:00 lumpi kernel: [2293210.548386] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=172.31.1.100 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=64329 PROTO=TCP SPT=46770 DPT=5555 WINDOW=1024 RES=0x00 SYN URGP=0 
...

2019-10-30T13:59:16.414391+01:00 lumpi kernel: [2262748.678604] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.85 DST=172.31.1.100 LEN=40 TOS=0x00 PREC=0x00 TTL=243 ID=62160 PROTO=TCP SPT=56090 DPT=3390 WINDOW=1024 RES=0x00 SYN URGP=0 
...

10/27/2019-17:07:47.137511 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

10/26/2019-17:43:17.121717 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

10/17/2019-15:27:12.999276 81.22.45.85 Protocol: 6 ET DROP Dshield Block Listed Source group 1

suspicious action Sat, 29 Feb 2020 11:28:01 -0300

2020-02-19T00:19:18.463055+01:00 lumpi kernel: [7357790.238387] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.133 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=243 ID=60679 PROTO=TCP SPT=50449 DPT=7000 WINDOW=1024 RES=0x00 SYN URGP=0 
...

2020-02-18T20:40:14.685548+01:00 lumpi kernel: [7344646.660249] INPUT:DROP:SPAMHAUS_EDROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=81.22.45.133 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=243 ID=12495 PROTO=TCP SPT=50449 DPT=7777 WINDOW=1024 RES=0x00 SYN URGP=0 
...

02/17/2020-20:00:28.393431 81.22.45.106 Protocol: 6 ET CINS Active Threat Intelligence Poor Reputation IP group 83

ET CINS Active Threat Intelligence Poor Reputation IP group 69 - port: 5322 proto: TCP cat: Misc Attack

Fail2Ban Ban Triggered

MultiHost/MultiPort Probe, Scan, Hack -

Feb  8 10:02:23 mail kernel: [562000.917378] [UFW BLOCK] IN=eth0 OUT= MAC=00:16:3c:05:0d:89:f8:66:f2:68:66:ff:08:00 SRC=81.22.45.182 DST=77.73.69.240 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=56258 PROTO=TCP SPT=42357 DPT=16115 WINDOW=1024 RES=0x00 SYN URGP=0 
...

ET CINS Active Threat Intelligence Poor Reputation IP group 77 - port: 3389 proto: TCP cat: Misc Attack

3388/tcp 3377/tcp 3385/tcp...
[2019-12-09/2020-02-07]121pkt,33pt.(tcp)

Unauthorized connection attempt from IP address 81.22.45.83 on Port 3389(RDP)

Feb  6 17:32:05 mail kernel: [416183.709828] [UFW BLOCK] IN=eth0 OUT= MAC=00:16:3c:05:0d:89:f8:66:f2:68:66:ff:08:00 SRC=81.22.45.182 DST=77.73.69.240 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=30608 PROTO=TCP SPT=50336 DPT=10904 WINDOW=1024 RES=0x00 SYN URGP=0 
...

Feb  6 08:44:36 mail kernel: [384534.949997] [UFW BLOCK] IN=eth0 OUT= MAC=00:16:3c:05:0d:89:f8:66:f2:68:66:ff:08:00 SRC=81.22.45.182 DST=77.73.69.240 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=55760 PROTO=TCP SPT=50336 DPT=10994 WINDOW=1024 RES=0x00 SYN URGP=0 
...

Unauthorised access (Feb  6) SRC=81.22.45.104 LEN=40 TTL=249 ID=41689 TCP DPT=3389 WINDOW=1024 SYN 
Unauthorised access (Feb  4) SRC=81.22.45.104 LEN=40 TTL=249 ID=63055 TCP DPT=3389 WINDOW=1024 SYN 
Unauthorised access (Feb  2) SRC=81.22.45.104 LEN=40 TTL=248 ID=40974 TCP DPT=3389 WINDOW=1024 SYN

Feb  6 01:19:32 mail kernel: [357831.266667] [UFW BLOCK] IN=eth0 OUT= MAC=00:16:3c:05:0d:89:f8:66:f2:68:66:ff:08:00 SRC=81.22.45.182 DST=77.73.69.240 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=40878 PROTO=TCP SPT=50336 DPT=10137 WINDOW=1024 RES=0x00 SYN URGP=0 
...

Unauthorized SMTP/IMAP/POP3 connection attempt

Invalid user vo from 206.189.225.85 port 53808

2020-04-22T23:18:56.887705shield sshd\[12970\]: Invalid user sz from 106.75.10.4 port 55042
2020-04-22T23:18:56.891739shield sshd\[12970\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.10.4
2020-04-22T23:18:59.254300shield sshd\[12970\]: Failed password for invalid user sz from 106.75.10.4 port 55042 ssh2
2020-04-22T23:28:02.690071shield sshd\[14515\]: Invalid user test1 from 106.75.10.4 port 59698
2020-04-22T23:28:02.695360shield sshd\[14515\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.10.4

Invalid user sr from 119.146.150.134 port 32772

(sshd) Failed SSH login from 159.65.196.65 (NL/Netherlands/-): 5 in the last 3600 secs

Invalid user test1 from 66.42.43.150 port 33682

(imapd) Failed IMAP login from 220.225.7.42 (IN/India/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: Apr 23 02:59:23 ir1 dovecot[264309]: imap-login: Disconnected (auth failed, 1 attempts in 6 secs): user=, method=PLAIN, rip=220.225.7.42, lip=5.63.12.44, TLS: Connection closed, session=

SSH brute force

Apr 23 01:23:25 v22018053744266470 sshd[3245]: Failed password for root from 49.88.112.68 port 33385 ssh2
Apr 23 01:29:44 v22018053744266470 sshd[3668]: Failed password for root from 49.88.112.68 port 20244 ssh2
...

Invalid user ubuntu from 47.74.245.246 port 51958

Invalid user ki from 185.183.243.118 port 32802

2020-04-22T18:14:24.1000491495-001 sshd[65379]: Invalid user ax from 213.204.81.159 port 33108
2020-04-22T18:14:24.1081751495-001 sshd[65379]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.204.81.159
2020-04-22T18:14:24.1000491495-001 sshd[65379]: Invalid user ax from 213.204.81.159 port 33108
2020-04-22T18:14:26.5816701495-001 sshd[65379]: Failed password for invalid user ax from 213.204.81.159 port 33108 ssh2
2020-04-22T18:22:40.9217431495-001 sshd[580]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.204.81.159  user=root
2020-04-22T18:22:43.1541931495-001 sshd[580]: Failed password for root from 213.204.81.159 port 45958 ssh2
...

run attacks on the service SSH

Apr 22 20:21:28 : SSH login attempts with invalid user

Invalid user nx from 222.239.28.177 port 60088