alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE JS/AlterSave Skimmer Payload Inbound M1"; flow:established,to_client; http.response_body; content:"|7b|AD|5f|CLICK|3a 21|0|2c|AD|5f|VIEW|3a 21|0|2c|ADD|5f|BILLING|5f|INFO|3a 21|0|2c|"; fast_pattern; reference:url,twitter.com/sansecio/status/1587034728292646913; reference:md5,8850e906960310285bab4d51c12beff8; classtype:command-and-control; sid:2039603; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_10_31, deployment Perimeter, deployment SSLDecrypt, deprecation_reason False_Positive, malware_family JS_AlterSave, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_01;)