alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE GoLang Discord Token Grabber Exfil"; flow:established,to_server; http.method; content:"GET"; http.user_agent; content:"Go-http-client/"; startswith; http.header; content:"|0d 0a|Sharkflow|3a 20|"; fast_pattern; pcre:"/^(?:mfa\.[\w-]{84}|[\w-]{24}\.[\w-]{6}\.[\w-]{27})\x0d\x0a/R"; reference:url,twitter.com/sysopfb/status/1232830899370242048; reference:md5,1d2c1b88d8ae94c3f994d07451f6cc23; classtype:trojan-activity; sid:2029542; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_02_27, deployment Perimeter, malware_family Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_02_27;)