Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE FrigidStealer AppleScript Payload"; flow:established,to_client; http.stat_code; content:"200"; http.response_body; content:"on firewallets(firepath, savePath)"; content:"dscl . authonly"; distance:0; content:"on send_data(attempt, outUsername, serverIP, isBot)"; distance:0; fast_pattern; content:"curl|20 2d|X|20|POST|20 2d|H|20 5c 22|X|2d|Bid|3a|"; distance:0; content:".zip"; distance:0; content:"index.php"; distance:0; content:"chmod +x shell && ./shell"; distance:0; reference:url,moonlock.com/macc-stealer-macsync-backdoor; classtype:trojan-activity; sid:2064740; rev:1; metadata:affected_product Mac_OSX, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_09_17, deployment Perimeter, confidence High, signature_severity Major, tag Stealer, tag Description_Generated_By_Proofpoint_Nexus, tag FrigidStealer, updated_at 2025_09_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise;)