alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED MacOS/Realst CnC Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/opened"; fast_pattern; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|buildName|22 0d 0a 0d 0a|"; content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|buildVersion|22 0d 0a 0d 0a|"; content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|uid|22 0d 0a 0d 0a|"; pcre:"/^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}/R"; reference:url,www.sentinelone.com/blog/apple-crimeware-massive-rust-infostealer-campaign-aiming-for-macos-sonoma-ahead-of-public-release/; reference:md5,b56f0f689caf2997a67383d25ef9f64a; classtype:trojan-activity; sid:2047005; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_07_31, deployment Perimeter, former_category MALWARE, malware_family MacOS_Realst, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_04_17, reviewed_at 2025_04_17; target:src_ip;)