[Snort-sigs] Win.Trojan.Tiggre

Phillip Lee phillile at sourcefire.com
Tue Feb 20 07:14:57 EST 2018


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? 

Phil Lee
Cisco Talos

> On Feb 19, 2018, at 1:26 PM, Y M via Snort-sigs <snort-sigs at 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
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