[Snort-users] Suspicious hacker activity detected?

Michael Brown mike.a.brown09 at ...11827...
Mon Apr 14 11:19:57 EDT 2014


Are the heartbleed snort signatures open source or they only for VRT
subscribers?

---
Thank you,

Michael A. Brown
mike.a.brown09 at ...11827...
(757) 912-0836
M.S. Forensic Studies: Computer Forensics
B.S. Information Technology: Network Specialist

"The only thing necessary for the triumph of evil is for good men to do
nothing" -Edmund Burke


On Mon, Apr 14, 2014 at 11:13 AM, Nicholas Mavis (nmavis)
<nmavis at ...589...>wrote:

>  Yes, this is a sign and it also looks like you are vulnerable.
>
>  Nick
>
>   From: Teo En Ming <teo.en.ming at ...11827...>
> Date: Monday, April 14, 2014 at 11:06 AM
> To: Snort Users <snort-users at lists.sourceforge.net>
> Subject: [Snort-users] Suspicious hacker activity detected?
>
>    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 at ...274... 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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