alert http any any -> any any (msg:"STEALER [PTsecurity] EncryptHub Checkin"; flow:established, to_server; http.method; content:"POST"; http.uri; content:"/?method=SubmitInfo"; startswith; fast_pattern; isdataat:!1, relative; http.header_names; content:"|0d 0a|Api-Key|0d 0a|"; startswith; content:!"Referer"; content:!"Accept"; http.content_type; content:"application/json"; startswith; http.request_body; bsize:100<>512; content:!"{"; depth:4; content:!"|20|"; pcre:"/^[a-z0-9]{8}(?:\-[a-z0-9]{4}){3}\-[a-z0-9]{12}\x0a[A-Za-z0-9\/\-\+]+={0,2}$/"; reference:url, trendmicro.com/en_us/research/25/c/deep-dive-into-water-gamayun.html; reference:url, www.joesandbox.com/analysis/1565464/0/html; reference:url, rules.ptsecurity.com; classtype:trojan-activity; sid:10012529; rev:2;)