ET ATTACK_RESPONSE MacSync Stealer Payload Inbound M1

Query · suricata

flow:established,to_client;
http.response_body;
content:"writeText|28 22|MacSync|20|Stealer|5c|n|5c|n|22 2c 20|writemind|20 26 20 22|info|22 29|";
target:dest_ip;
Raw source ET ATTACK_RESPONSE MacSync Stealer Payload Inbound M1 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET ATTACK_RESPONSE MacSync Stealer Payload Inbound M1";
    flow:established,to_client;
    http.response_body;
    content:"writeText|28 22|MacSync|20|Stealer|5c|n|5c|n|22 2c 20|writemind|20 26 20 22|info|22 29|";
    reference:md5,b069eeffe39e07f3dd4f99c708fc2bf3;
    reference:url,x.com/suyog41/status/2041037052666667008;
    classtype:trojan-activity;
    sid:2068604; rev:1;
    metadata:affected_product Mac_OSX, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_04_06, deployment Perimeter, malware_family MacSync, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_04_06, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1105, mitre_technique_name Ingress_Tool_Transfer;
    target:dest_ip;
)

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