Snort mailing list archives
Re: C2 - Zeus?
From: Joel Esler <jesler () sourcefire com>
Date: Thu, 13 Jun 2013 13:45:46 -0400
Paul, A couple comments, In your pcre you end with "id\=[0-9]{2,}", is there something after the two digits? or does it end there? (Can we do "id\=[0-9]{2}$") As it stands right there, "2," will keep searching on and on. Also, [a-zA-Z]{1}… The {1} is unnecessary in this case. Any pcaps here? On Jun 13, 2013, at 7:28 AM, Paul Bottomley <Paul.Bottomley () betfair com> wrote:
Might need running in your test lab for a week or so to see what it picks up… From observation so no reference. alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MALWARE-CNC Win.Trojan.Zeus outbound connection"; flow:established,to_server; content:"/images/"; fast_pattern:only; http_uri; pcre:"/\/images\/[a-zA-Z]{1}\.php\?id\=[0-9]{2,}/Ui"; classtype:trojan-activity; sid:xxxxxx; rev:1;) Thanks ________________________________________________________________________ In order to protect our email recipients, Betfair Group use SkyScan from MessageLabs to scan all Incoming and Outgoing mail for viruses. ________________________________________________________________________ ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev_______________________________________________ Snort-sigs mailing list Snort-sigs () lists sourceforge net https://lists.sourceforge.net/lists/listinfo/snort-sigs http://www.snort.org Please visit http://blog.snort.org for the latest news about Snort!
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_______________________________________________ Snort-sigs mailing list Snort-sigs () lists sourceforge net https://lists.sourceforge.net/lists/listinfo/snort-sigs http://www.snort.org Please visit http://blog.snort.org for the latest news about Snort!
Current thread:
- C2 - Zeus? Paul Bottomley (Jun 13)
- Re: C2 - Zeus? Joel Esler (Jun 13)
- [SPAM] Re: C2 - Zeus? rmkml (Jun 13)
- Re: C2 - Zeus? Paul Bottomley (Jun 14)
- Re: C2 - Zeus? Joel Esler (Jun 14)
- Re: C2 - Zeus? Joel Esler (Jun 13)