[Snort-users] Can snort dump full pcap of alert?

Y M snort at ...15979...
Thu Dec 19 11:51:38 EST 2013


Check the following post-detection keywords from Snort's manual:
logto : http://manual.snort.org/node34.html#SECTION00471000000000000000tag: http://manual.snort.org/node34.html#SECTION00475000000000000000, andSession: http://manual.snort.org/node34.html#SECTION00472000000000000000
You need to be careful with these to not overwhelm Snort with capturing session data. May be a full packet capture, for example using daemonlogger or so, is a better route?
Thanks.YM

> From: onno at ...16627...
> To: snort-users at lists.sourceforge.net
> Date: Thu, 19 Dec 2013 17:35:50 +0100
> Subject: [Snort-users] Can snort dump full pcap of alert?
> 
> Hi,
> 
> Just wondering. I've setup snort and it triggered an alert. The alert
> is: OS-WINDOWS Microsoft Windows Shell Handler remote code ...
> sid=1:16414
> 
> In snorby it's showing a dump of the payload. But that is only of that
> specific packet? Dump is like:
> 0000000: 54 f1 c7 e1 57 2a e3 b3 36 c0 ea aa 17   82 aa 2d f0 0e 51 f3
> fb 4a 50 e1 a5 45  T...W*..6......-..Q..JP..E
> 000001A: c4 7d e9 3f 93 b5 32 cd cd f1 95 41 0d   38 1d 02 d1 6e 01 51
> 0d d2 8b 7e fa 85  .}.?..2....A.8...n.Q...~..
> 0000034: 4a d5 48 71 0e a8 d0 50 45 37 cd 21 ae   53 d1 15 91 9b a4 c4
> 21 e9 e6 54 6c 25  J.Hq...PE7.!.S......!..Tl%
> 000004E: 45 95 14 03 c1 ad 5c 38 44 c8 4f 64 22   53 25 56 95 19 a0 5d
> 42 b3 e0 d5 57 b1  E.....\8D.Od"S%V...]B...W.
> 0000068: 02 00 2a 0e 61 75 90 49 c0 42 a9 ed 81   6c e3 d0 e1 d7 86 69
> fc eb 7f a1 80 2f  ..*.au.I.B...l.....i...../
> 
> Not really readable. ;o) So I was wondering if snort is able to generate
> a 'session pcap' when a rule is hit.
> 
> I'm running snort with barnyard2 (unified2). Options used are: -d and -D
> (and couple of others for conf, user and -l <dir>)
> 
> Do I need to add option -b ? (or a complete other program? ;o) )
> 
> Regards,
> Onno.
> 
> 
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