Snort mailing list archives
Suspicious hacker activity detected?
From: Teo En Ming <teo.en.ming () gmail com>
Date: Mon, 14 Apr 2014 23:06:21 +0800
Hi, My HTTPS web server, POP3S and IMAPS ports were probed for the OpenSSL heartbleed vulnerability without my knowledge and authorization. Is it a sign of hacker activity? Please look at the Snort alerts below. [root@localhost snort]# grep heartbeat snort.fast | grep -v 161.69.31.4 04/14-04:34:45.168194 [**] [1:30516:6] SERVER-OTHER TLSv1.1 large heartbeat response - possible ssl heartbleed attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.146:443 -> 185.35.61.19:41201 04/14-09:31:58.763823 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 183.60.243.189:46524 -> 192.168.1.147:993 04/14-09:31:58.764609 [**] [1:30516:6] SERVER-OTHER TLSv1.1 large heartbeat response - possible ssl heartbleed attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.147:993 -> 183.60.243.189:46524 04/14-09:31:59.025988 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 183.60.243.189:46524 -> 192.168.1.147:993 04/14-09:36:47.578766 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 183.60.244.46:55346 -> 192.168.1.147:995 04/14-09:36:47.579841 [**] [1:30516:6] SERVER-OTHER TLSv1.1 large heartbeat response - possible ssl heartbleed attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.147:995 -> 183.60.244.46:55346 04/14-09:36:47.775693 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 183.60.244.46:55346 -> 192.168.1.147:995 04/14-09:36:47.775693 [**] [1:30512:5] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 183.60.244.46:55346 -> 192.168.1.147:995 04/14-10:13:25.031989 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 101.226.19.76:31223 -> 192.168.1.146:443 04/14-10:13:25.032841 [**] [1:30516:6] SERVER-OTHER TLSv1.1 large heartbeat response - possible ssl heartbleed attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.146:443 -> 101.226.19.76:31223 04/14-10:13:25.262897 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 101.226.19.76:31223 -> 192.168.1.146:443 04/14-10:13:25.262897 [**] [1:30512:5] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 101.226.19.76:31223 -> 192.168.1.146:443 04/14-11:51:26.034725 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 180.153.198.190:25521 -> 192.168.1.147:993 04/14-11:51:26.035167 [**] [1:30516:6] SERVER-OTHER TLSv1.1 large heartbeat response - possible ssl heartbleed attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.147:993 -> 180.153.198.190:25521 04/14-11:51:26.232356 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 180.153.198.190:25521 -> 192.168.1.147:993 04/14-11:51:26.232356 [**] [1:30512:5] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 180.153.198.190:25521 -> 192.168.1.147:993 04/14-12:01:46.374268 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 180.153.198.219:50214 -> 192.168.1.147:995 04/14-12:01:46.375062 [**] [1:30516:6] SERVER-OTHER TLSv1.1 large heartbeat response - possible ssl heartbleed attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.147:995 -> 180.153.198.219:50214 04/14-12:01:46.597640 [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 180.153.198.219:50214 -> 192.168.1.147:995 04/14-12:01:46.597640 [**] [1:30512:5] SERVER-OTHER OpenSSL TLSv1.1 heartbeat read overrun attempt [**] [Classification: Attempted Information Leak] [Priority: 2] {TCP} 180.153.198.219:50214 -> 192.168.1.147:995 Yours sincerely, Teo En Ming
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Current thread:
- Suspicious hacker activity detected? Teo En Ming (Apr 14)
- Re: Suspicious hacker activity detected? Nicholas Mavis (nmavis) (Apr 14)
- Re: Suspicious hacker activity detected? Michael Brown (Apr 14)
- Re: Suspicious hacker activity detected? Y M (Apr 14)
- Re: Suspicious hacker activity detected? Teo En Ming (Apr 14)
- Re: Suspicious hacker activity detected? Michael Brown (Apr 14)
- Re: Suspicious hacker activity detected? Michael Brown (Apr 14)
- Re: Suspicious hacker activity detected? Teo En Ming (Apr 14)
- Re: Suspicious hacker activity detected? Nicholas Mavis (nmavis) (Apr 14)
- Re: Suspicious hacker activity detected? Teo En Ming (Apr 14)
- Re: Suspicious hacker activity detected? Arvid Van Essche (Apr 14)
- Re: Suspicious hacker activity detected? Teo En Ming (Apr 14)
- Re: Suspicious hacker activity detected? Nicholas Mavis (nmavis) (Apr 14)