ET MALWARE MacSync Stage 2 CnC Exfil

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri; bsize:5;
content:"/gate";
http.user_agent;
content:"Macintosh";
http.request_body;
content:"filename|3d 22|osalogging|2e|zip|22|"; fast_pattern;
target:src_ip;
Raw source ET MALWARE MacSync Stage 2 CnC Exfil · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE MacSync Stage 2 CnC Exfil";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:5;
    content:"/gate";
    http.user_agent;
    content:"Macintosh";
    http.request_body;
    content:"filename|3d 22|osalogging|2e|zip|22|"; fast_pattern;
    reference:url,securitylabs.datadoghq.com/articles/tech-impersonators-clickfix-and-macos-infostealers;
    reference:md5,5d3a849baf1da37696e6aefde1e0f15a;
    classtype:command-and-control;
    sid:2067675; rev:1;
    metadata:affected_product Mac_OSX, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_02_13, deployment Perimeter, deployment SSLDecrypt, malware_family MacSync, confidence High, signature_severity Critical, updated_at 2026_02_13;
    target:src_ip;
)

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