[Oisf-users] dcerpc protocol analyzer seems not to work

Davide Setti d.setti at certego.net
Tue Sep 24 07:04:09 UTC 2019

Hi Andreas,

> > Running the pcap attached to this mail I’m getting the following data:
> {"timestamp":"2019-09-11T23:56:09.419148+0200","flow_id":122709051740650,"event_type":"flow","src_ip":"","src_port":59775,"dest_ip":"","dest_port":49667,"proto":"TCP","app_proto":"dcerpc","flow":{"pkts_toserver":9,"pkts_toclient":7,"bytes_toserver":3357,"bytes_toclient":1478,"start":"2019-09-11T23:56:00.102890+0200","end":"2019-09-11T23:56:00.153885+0200","age":0,"state":"established","reason":"shutdown","alerted":false},"tcp":{"tcp_flags":"1a","tcp_flags_ts":"1a","tcp_flags_tc":"1a","syn":true,"psh":true,"ack":true,"state":"established"}}
> Is what I get for example

At the moment we are not interested in FLOW log for this protocol.
We are testing rules on DCERPC protocol and we expected there would be a
logger for it, like those for DNS/HTTP(S) etc, which could help us to
refine our rules and to better understand how Suricata interprets this

What we expected was something like this in suricata YAML:

>   - eve-log:
>     ...
>     types:
>       - dcerpc

But this does not seem to work, as Federico said nothing gets logged on
Is there a way to log DCERPC protocol data?

Davide Setti
Security Platform Lead Engineer, Certego
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