Snort mailing list archives
Re: TOR Browser detection policy rule
From: William Siradas <bill () lantrax com>
Date: Tue, 12 Dec 2017 17:46:45 +0000
unsubscribe From: Snort-sigs [mailto:snort-sigs-bounces () lists snort org] On Behalf Of Tyler Montier Sent: Monday, December 11, 2017 10:00 AM To: R S <rene.shuster () bcsemail org> Cc: snort-sigs <snort-sigs () lists snort org>; Lenny Hansson <lenny () netcowboy dk> Subject: Re: [Snort-sigs] TOR Browser detection policy rule Lenny, Thanks for your submission. We will review the rule for addition into the community ruleset, and get back to you when its finished. You said you tested the rule already, do you have any pcaps that you could send our way while we test the rule? Thanks, Tyler Montier Cisco Talos On Mon, Dec 11, 2017 at 9:34 AM, R S <rene.shuster () bcsemail org<mailto:rene.shuster () bcsemail org>> wrote: 9000,9001,9040 etc. but not 300 ports. There will be lots of traffic attributed to Tor although it isn't. Suggest to change to date to international ISO format YYYY-MM-DD On Sun, Dec 10, 2017 at 6:17 PM, Lenny Hansson <lenny () netcowboy dk<mailto:lenny () netcowboy dk>> wrote: To all SNORT users: TOR Browser detection rule. Feel free to use. I have tested the rule on 100GB data set no false positives so far. If you find any false positives please let me know. alert tcp $EXTERNAL_NET [9000:9300] -> $HOME_NET 1024: (msg:"NF - POLICY - TOR browser starting up - TOR SSL NAT Check Detected - Typical TOR DNS name"; flow:from_server,established; pcre:"/www\.[a-z0-9]{12,21}\.(com|net)/i"; reference:url,networkforensic.dk<http://networkforensic.dk>; metadata:10122017; classtype:policy-violation; sid:5021501; rev:3;) It detects every time the TOR Browser is started. Best Regards Lenny Hansson *********************************** E-mail: security () netcowboy dk<mailto:security () netcowboy dk> Key-ID: D282 E960 7B91 5A04 68DA AB33 4070 9EB8 9137 9877 *********************************** _______________________________________________ Snort-sigs mailing list Snort-sigs () lists snort org<mailto:Snort-sigs () lists snort org> https://lists.snort.org/mailman/listinfo/snort-sigs Please visit http://blog.snort.org for the latest news about Snort! Please follow these rules: https://snort.org/faq/what-is-the-mailing-list-etiquette Visit the Snort.org to subscribe to the official Snort ruleset, make sure to stay up to date to catch the most <a href=" https://snort.org/downloads/#rule-downloads">emerging threats</a>! -- Tech III * AppControl * Endpoint Protection * Server Maintenance Buncombe County Schools Technology Department Network Group ComicSans Awareness Campaign<http://comicsanscriminal.com> _______________________________________________ Snort-sigs mailing list Snort-sigs () lists snort org<mailto:Snort-sigs () lists snort org> https://lists.snort.org/mailman/listinfo/snort-sigs Please visit http://blog.snort.org for the latest news about Snort! Please follow these rules: https://snort.org/faq/what-is-the-mailing-list-etiquette Visit the Snort.org to subscribe to the official Snort ruleset, make sure to stay up to date to catch the most <a href=" https://snort.org/downloads/#rule-downloads">emerging threats</a>!
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Current thread:
- TOR Browser detection policy rule Lenny Hansson (Dec 11)
- Re: TOR Browser detection policy rule R S (Dec 11)
- Re: TOR Browser detection policy rule Tyler Montier (Dec 11)
- Re: TOR Browser detection policy rule William Siradas (Dec 12)
- Re: TOR Browser detection policy rule lists (Dec 12)
- Re: TOR Browser detection policy rule Alberto Colosi via Snort-sigs (Dec 12)
- Re: TOR Browser detection policy rule R S (Dec 12)
- Re: TOR Browser detection policy rule Rob Lopez via Snort-sigs (Dec 12)
- Re: TOR Browser detection policy rule lists (Dec 12)
- Re: TOR Browser detection policy rule Tyler Montier (Dec 11)
- Re: TOR Browser detection policy rule R S (Dec 11)