🇩🇪
Tamsy
2023-11-01 01:28:42
(2 years ago)
Mail server brute force attack attempt
Brute-Force
🇩🇪
chris_yooo
2023-10-31 21:03:19
(2 years ago)
Oct 31 22:03:11 dwc1 postfix/smtps/smtpd[575040]: lost connection after CONNECT from unknown[45.81.3 ...
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Oct 31 22:03:11 dwc1 postfix/smtps/smtpd[575040]: lost connection after CONNECT from unknown[45.81.39.237]
Oct 31 22:03:14 dwc1 postfix/smtps/smtpd[575040]: NOQUEUE: reject: RCPT from unknown[45.81.39.237]: 554 5.7.1 <unknown[45.81.39.237]>: Client host rejected: Access denied; from=<[email protected] > to=<[email protected] > proto=SMTP helo=<win-clj1b0gq6jp.domain>
Oct 31 22:03:19 dwc1 postfix/smtps/smtpd[575062]: warning: unknown[45.81.39.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
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Email Spam
Brute-Force
🇩🇪
tall1oN
2023-10-31 19:21:06
(2 years ago)
2023-10-31T20:20:34.431925+01:00 kenny postfix/smtpd[3309671]: warning: unknown[45.81.39.237]: SASL ...
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2023-10-31T20:20:34.431925+01:00 kenny postfix/smtpd[3309671]: warning: unknown[45.81.39.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2023-10-31T20:20:56.183937+01:00 kenny postfix/smtpd[3309679]: warning: unknown[45.81.39.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2023-10-31T20:21:05.452886+01:00 kenny postfix/smtpd[3309689]: warning: unknown[45.81.39.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
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Email Spam
Brute-Force
🇩🇪
tall1oN
2023-10-31 19:20:52
(2 years ago)
2023-10-31T20:20:30.053474+01:00 kenny dovecot: auth-worker(3309672): conn unix:auth-worker (pid=330 ...
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2023-10-31T20:20:30.053474+01:00 kenny dovecot: auth-worker(3309672): conn unix:auth-worker (pid=3309588,uid=107): auth-worker<1>: sql(info,45.81.39.237): unknown user
2023-10-31T20:20:32.429357+01:00 kenny dovecot: auth-worker(3309672): conn unix:auth-worker (pid=3309588,uid=107): auth-worker<2>: pam(info,45.81.39.237): pam_authenticate() failed: Authentication failure (Password mismatch?)
2023-10-31T20:20:51.596124+01:00 kenny dovecot: auth-worker(3309672): conn unix:auth-worker (pid=3309588,uid=107): auth-worker<3>: sql(postmaster,45.81.39.237): unknown user
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Email Spam
Brute-Force
🇷🇺
anatoliy.males
2023-10-31 14:02:50
(2 years ago)
Oct 31 20:57:23 mail postfix/smtps/smtpd[394435]: NOQUEUE: reject: RCPT from unknown[45.81.39.237]: ...
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Oct 31 20:57:23 mail postfix/smtps/smtpd[394435]: NOQUEUE: reject: RCPT from unknown[45.81.39.237]: 554 5.7.1 <unknown[45.81.39.237]>: Client host rejected: Access denied; from=<[email protected] > to=<[email protected] > proto=SMTP helo=<win-clj1b0gq6jp.domain>
Oct 31 20:59:46 mail postfix/smtps/smtpd[394528]: warning: unknown[45.81.39.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 31 21:02:46 mail postfix/smtps/smtpd[394489]: warning: unknown[45.81.39.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
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Email Spam
Brute-Force
🇷🇺
anatoliy.males
2023-10-28 16:46:32
(2 years ago)
Oct 28 23:46:17 mail postfix/smtps/smtpd[1024944]: NOQUEUE: reject: RCPT from unknown[45.81.39.237]: ...
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Oct 28 23:46:17 mail postfix/smtps/smtpd[1024944]: NOQUEUE: reject: RCPT from unknown[45.81.39.237]: 554 5.7.1 <unknown[45.81.39.237]>: Client host rejected: Access denied; from=<[email protected] > to=<[email protected] > proto=SMTP helo=<win-clj1b0gq6jp.domain>
Oct 28 23:46:22 mail postfix/smtps/smtpd[1024965]: warning: unknown[45.81.39.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Oct 28 23:46:31 mail postfix/smtps/smtpd[1024944]: warning: unknown[45.81.39.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
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Email Spam
Brute-Force
🇷🇺
nyuuzyou
2023-10-24 03:17:31
(2 years ago)
{"action": "connection", "data": {"arg": "FROM:<[email protected] >", "command": "MAIL", "d ...
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{"action": "connection", "data": {"arg": "FROM:<[email protected] >", "command": "MAIL", "data": "None"}, "dest_ip": "0.0.0.0", "dest_port": "25", "server": "smtp_server", "src_ip": "45.81.39.237", "src_port": "57384", "timestamp": "2023-10-24T03:16:29.831155"}
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Port Scan
Brute-Force
🇷🇺
shishkin
2023-10-17 11:29:03
(2 years ago)
2023-10-15 19:58:33 H=(win-clj1b0gq6jp.domain) [45.81.39.237] F=<test@...> rejected RCPT <james4anne ...
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2023-10-15 19:58:33 H=(win-clj1b0gq6jp.domain) [45.81.39.237] F=<test@...> rejected RCPT <[email protected] >: relay not permitted
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Spoofing
🇷🇺
OK
2023-10-13 00:51:04
(2 years ago)
SMTP
Email Spam
Hacking
Brute-Force
2023-10-02 02:11:28
(2 years ago)
(UserAttack) User Attack From 45.81.39.237 (NL/Netherlands/-): 1 in the last 3600 secs; Ports: *; D ...
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(UserAttack) User Attack From 45.81.39.237 (NL/Netherlands/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_CUSTOMTRIGGER; Logs: 2023-10-02 02:11:22 auth_login authenticator failed for (win-clj1b0gq6jp.domain) [45.81.39.237]: 535 Incorrect authentication data (set_id=info)
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Port Scan
🇷🇺
cybertailor
2023-09-24 10:49:51
(2 years ago)
Sep 24 10:49:51 sysrq smtpd[4745]: 89ffb06d9135bdad smtp connected address=45.81.39.237 host=<unknow ...
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Sep 24 10:49:51 sysrq smtpd[4745]: 89ffb06d9135bdad smtp connected address=45.81.39.237 host=<unknown>
Sep 24 10:49:51 sysrq smtpd[4745]: 89ffb06d9135bdad smtp failed-command command="RCPT TO:<[email protected] >" result="550 Invalid recipient: <[email protected] >"
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Brute-Force
🇷🇺
OK
2023-09-24 07:00:05
(2 years ago)
SMTP
Email Spam
Hacking
Brute-Force