Snort mailing list archives
Re: Win.Trojan.Tiggre
From: Phillip Lee <phillile () sourcefire com>
Date: Thu, 22 Mar 2018 10:19:12 -0400
Dear Yaser, This rule has been reviewed and added to the community ruleset (SID: 45960). Several modifications were made to the original rule proposed based on additional analysis of the sample and for performance. Submitted Rules: alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"MALWARE-CNC Win.Trojan.Silverstar outbound connection"; flow:to_server,established; content:"response=fallback"; fast_pattern:only; http_uri; content:"/api.php?"; depth:9; http_uri; content:"gpu="; nocase; http_uri; metadata:impact_flag red, policy balanced-ips drop, policy max-detect-ips drop, policy security-ips drop, ruleset community, service http; reference:url,www.virustotal.com/#/file/3f751799a501532f43ca5f12fe80aa0bad78f9f5d57e76bf49b401bb99f355df/detection; classtype:trojan-activity; sid:45960; rev:1;) Thank you for your contribution. Sincerely, Phil Lee Cisco Talos
On Feb 20, 2018, at 7:14 AM, Phillip Lee <phillile () sourcefire com> wrote: Yaser, Thanks for your submission. We will review the rules and get back to you when they're finished. Can you send along the pcaps that you have? Regards, Phil Lee Cisco TalosOn Feb 19, 2018, at 1:26 PM, Y M via Snort-sigs <snort-sigs () lists snort org <mailto:snort-sigs () lists snort org>> wrote: Hi, This one for detecting Tiggre (aka SilverStart). Pcap is available. alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"MALWARE-CNC Win.Trojan.Tiggre - SilverStar - outbound connection"; flow:to_server,established; content:"GET"; http_method; content:"/api.php?"; fast_pattern:only; content:"response="; http_uri; content:"&cpu="; http_uri; content:"&gpu="; http_uri; content:"&ram="; http_uri; metadata:ruleset community, service http; content:!"User-Agent"; http_header; content:!"Referer"; http_header; reference:url,www.virustotal.com/#/file/3f751799a501532f43ca5f12fe80aa0bad78f9f5d57e76bf49b401bb99f355df/detection <http://www.virustotal.com/#/file/3f751799a501532f43ca5f12fe80aa0bad78f9f5d57e76bf49b401bb99f355df/detection>; classtype:trojan-activity; sid:9000038; rev:1;) Thank. YM _______________________________________________ Snort-sigs mailing list Snort-sigs () lists snort org <mailto:Snort-sigs () lists snort org> https://lists.snort.org/mailman/listinfo/snort-sigs <https://lists.snort.org/mailman/listinfo/snort-sigs> Please visit http://blog.snort.org <http://blog.snort.org/> for the latest news about Snort! Please follow these rules: https://snort.org/faq/what-is-the-mailing-list-etiquette <https://snort.org/faq/what-is-the-mailing-list-etiquette> Visit the Snort.org <http://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 <https://snort.org/downloads/#rule-downloads>">emerging threats</a>!
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Current thread:
- Win.Trojan.Tiggre Y M via Snort-sigs (Feb 19)
- Re: Win.Trojan.Tiggre Phillip Lee (Feb 20)
- Re: Win.Trojan.Tiggre Phillip Lee (Mar 22)
- Re: Win.Trojan.Tiggre Phillip Lee (Feb 20)