alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MacSync Stealer Payload Request"; flow:established,to_server; http.method; content:"GET"; http.uri; bsize:77; content:"|2f|dynamic|3f|txd|3d|"; startswith; fast_pattern; pcre:"/^[a-z0-9]{64}/R"; http.user_agent; content:"Macintosh"; http.header_names; content:"|0d 0a|api-key|0d 0a|"; nocase; reference:md5,b069eeffe39e07f3dd4f99c708fc2bf3; reference:url,x.com/suyog41/status/2041037052666667008; classtype:trojan-activity; sid:2068596; rev:1; metadata:affected_product Mac_OSX, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_04_06, deployment Perimeter, deployment SSLDecrypt, malware_family MacSync, confidence High, signature_severity Major, updated_at 2026_04_06; target:src_ip;)