Re: Events with no packet data

[Y M <snort () outlook com>]

> To: snort-users () lists sourceforge net
> Date: Tue, 8 Jul 2014 11:07:01 -0600
> From: jlay () slave-tothe-box net
> Subject: [Snort-users] Events with no packet data
>
> Interesting...from the u2 file:
>
> (Event)
>          sensor id: 0    event id: 1888  event second: 1404838420        
> event microsecond: 303235
>          sig id: 2015622 gen id: 1       revision: 1      
> classification: 21
>          priority: 1     ip source: x.x.x.x ip destination: x.x.x.x
>          src port: 80    dest port: 49211        protocol: 6     
> impact_flag: 0  blocked: 0
>
> (ExtraDataHdr)
>          event type: 4   event length: 38
>
> (ExtraData)
>          sensor id: 0    event id: 1888  event second: 1404838420
>          type: 9 datatype: 1     bloblength: 14  HTTP URI: /index
>
> (ExtraDataHdr)
>          event type: 4   event length: 56
>
> (ExtraData)
>          sensor id: 0    event id: 1888  event second: 1404838420
>          type: 10        datatype: 1     bloblength: 32  HTTP Hostname: 
> www.favfamilyrecipes.com
>
> And that's it...this should up as src/dst 0.0.0.0 in my sguil console.  
> Is there a way to figure out exactly when the packet information wasn't 
> included?  Thanks.
Was this the end of the event in the u2 file? Usually some events span multiple u2 records (my translation) and you may 
have to look further if there is additional records. Also, try to convert the u2 file into a pcap using the u2boat 
tool. This may not resolve the issue but at least will allow you to peak inside the packet itself within Wireshark or 
so. Perhaps following the stream as well may provide additional information (packets). This worked for me in certain 
situations.
Looking at the rule itself, it has multiple content matches; it had to trigger on that particular content to generate 
that event!
YM
> James
>
> ------------------------------------------------------------------------------
> Open source business process management suite built on Java and Eclipse
> Turn processes into business applications with Bonita BPM Community Edition
> Quickly connect people, data, and systems into organized workflows
> Winner of BOSSIE, CODIE, OW2 and Gartner awards
> http://p.sf.net/sfu/Bonitasoft
> _______________________________________________
> 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!

------------------------------------------------------------------------------
Open source business process management suite built on Java and Eclipse
Turn processes into business applications with Bonita BPM Community Edition
Quickly connect people, data, and systems into organized workflows
Winner of BOSSIE, CODIE, OW2 and Gartner awards
http://p.sf.net/sfu/Bonitasoft

_______________________________________________
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!