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Add file support to intel framework and slightly restructure intel http handling.

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This commit is contained in:
Seth Hall 2013-08-13 13:21:08 -04:00
parent d4820cd43b
commit 0bde911bd4
7 changed files with 93 additions and 26 deletions
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31
scripts/base/frameworks/intel/main.bro
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@ -80,6 +80,10 @@ export {
## If the data was discovered within a connection, the
## connection record should go into get to give context to the data.
conn: connection &optional;
## If the data was discovered within a file, the file record
## should go here to provide context to the data.
f: fa_file &optional;
};
## Record used for the logging framework representing a positive
@ -95,6 +99,16 @@ export {
## this is the conn_id for the connection.
id: conn_id &log &optional;
## If a file was associated with this intelligence hit,
## this is the uid for the file.
fuid: string &log &optional;
## A mime type if the intelligence hit is related to a file.
## If the $f field is provided this will be automatically filled out.
file_mime_type: string &log &optional;
## Frequently files can be "described" to give a bit more context.
## If the $f field is provided this field will be automatically filled out.
file_desc: string &log &optional;
## Where the data was seen.
seen: Seen &log;
## Sources which supplied data that resulted in this match.
@ -248,7 +262,22 @@ function has_meta(check: MetaData, metas: set[MetaData]): bool
event Intel::match(s: Seen, items: set[Item]) &priority=5
{
local info: Info = [$ts=network_time(), $seen=s];
if ( s$f?$conns && |s$f$conns| == 1 )
{
for ( cid in s$f$conns )
s$conn = s$f$conns[cid];
}
local info = Info($ts=network_time(), $seen=s);
if ( ! info?$fuid )
info$fuid = s$f$id;
if ( ! info?$file_mime_type && s$f?$mime_type )
info$file_mime_type = s$f$mime_type;
if ( ! info?$file_desc )
info$file_desc = Files::describe(s$f);
if ( s?$conn )
{