alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Poseidon Stealer Data Exfiltration Attempt"; flow:established,to_server; http.method; content:"POST"; http.header; content:"uuid|3a 20|"; pcre:"/^[a-f0-9]{32}\x0d\x0a/R"; content:"user|3a 20|"; content:"buildid|3a 20|"; fast_pattern; http.content_type; content:"application/x-www-form-urlencoded"; http.request_body; content:"PK|03 04|"; startswith; content:"__MACOSX/"; within:150; reference:url,www.malwarebytes.com/blog/news/2024/06/poseidon-mac-stealer-distributed-via-google-ads; classtype:trojan-activity; sid:2054173; rev:1; metadata:affected_product Mac_OSX, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_07_01, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_07_01;)