Re: outputting variables for analysts

["Joel Esler (jesler)" <jesler () cisco com>]

On Jan 3, 2014, at 12:51 PM, Long, Kerry S <kslong () mitre org<mailto:kslong () mitre org>> wrote:

Hello, I originally sent this to the users group.  It is probably more appropriate for this group.



I am trying to figure out the best way to accomplish the following task.  I want my analysts to see a variable I 
capture with byte extract in their alert display.  Ideally it could just be inserted into the message field like below. 
I could also use Unified2 alerts with an extra custom field maybe where I create some sort of plugin to grab the value 
and insert it into a Unified2 alert.  Trying to decide what is the easiest way to do it. Suggestions would be most 
appreciated.

Kerry


alert tcp any any -> any any (byte_extract:1, 0, str_offset; \
        byte_extract:1, 1, str_depth; \
       content:"bad stuff"; offset:str_offset; depth:str_depth; \
        msg:"Bad Stuff detected within field at $str_offset";)



Currently there is no way to modify the message based upon a capture.

--
Joel Esler
Intelligence Lead
Open Source Manager
Vulnerability Research Team
New Email: jesler () cisco com<mailto:jesler () cisco com>

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