alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Fin4.InfoStealer Uploading User Credentials CnC Beacon"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php?msg="; fast_pattern; content:"&uname="; content:"&pword="; reference:url,www.fireeye.com/blog/threat-research/2014/11/fin4_stealing_insid.html; classtype:command-and-control; sid:2019829; rev:6; metadata:attack_target Client_Endpoint, created_at 2014_12_01, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_09_28, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)