alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Successful Generic AES Phish M1 Oct 24 2017"; flow:established,from_server; flowbits:isset,ET.genericphish; file_data; content:"hea2p"; distance:0; nocase; content:"0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvxyz"; fast_pattern; distance:0; content:"hea2t"; distance:0; nocase; content:"Aes"; nocase; distance:0; pcre:"/^\s*?\.\s*?Ctr\s*?\.\s*?decrypt/Rsi"; classtype:credential-theft; sid:2024997; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_10_24, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2022_03_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)