alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Lucy Security - Credential Submission (set)"; flowbits:set,ET.Lucy.CredPost; http.method; content:"POST"; http.uri; content:"?login"; endswith; fast_pattern; http.cookie; content:"link="; http.content_len; byte_test:0,>,0,0,string,dec; reference:url,lucysecurity.com; classtype:social-engineering; sid:2049830; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_12_22, deployment Perimeter, malware_family Lucy, malware_family Lucy_Phishing, confidence Medium, signature_severity Major, tag Phishing, updated_at 2023_12_22, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)