Re: Nessus activity detection quest

[Y M <snort () outlook com>]

There are about 3-5 signatures that almost always trigger when a Nessus  scan is initiated with different scan types, 
at least in all cases that I was able to verify. While these signatures do not identify that a Nessus scan in 
particular is ongoing, but the fact of seeing them trigger together is indicative of a Nessus scan in all cases I 
encountered. I will have to dig up some old data to get the sid(s) of these signatures.
YM

From: jesler () cisco com
To: soy_siberiano () yahoo com
Date: Thu, 23 Jul 2015 11:06:35 +0000
CC: Snort-users () lists sourceforge net
Subject: Re: [Snort-users] Nessus activity detection quest






So, you are doing a portscan, and the only alerts you see are portscans?



Nessus doesn't actually send exploits at a machine, it scans for the presence of characteristics that would make the 
machine vulnerable to an exploit.  There's nothing for Snort to detect, except the portscan part really.  



--
Joel Esler 
Manager, Threat Intelligence and Open Source
Talos Group
Sent from my iPhone


On Jul 23, 2015, at 1:17 AM, Oleg Ruso <soy_siberiano () yahoo com> wrote:







Hi List!



snort-2.9.7.0



I`m looking for some Snort rules for a Nessus activity detection.

Got an another alerts, but my Snort does not reveal a Nessus activity.

The preprocessor sfportscan detection only i see.



Regards, Alex






------------------------------------------------------------------------------




_______________________________________________

Snort-users mailing list

Snort-users () lists sourceforge net

Go to this URL to change user options or unsubscribe:

https://lists.sourceforge.net/lists/listinfo/snort-users

Snort-users list archive:

http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users



Please visit http://blog.snort.org to stay current on all the latest Snort news!




------------------------------------------------------------------------------
_______________________________________________
Snort-users mailing list
Snort-users () lists sourceforge net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users

Please visit http://blog.snort.org to stay current on all the latest Snort news!                                        

------------------------------------------------------------------------------

_______________________________________________
Snort-users mailing list
Snort-users () lists sourceforge net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users

Please visit http://blog.snort.org to stay current on all the latest Snort news!