ET MALWARE EtherHiding Exfil M2

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.content_type;
content:"application/json";
http.request_body;
content:"|22|method|22 3a 22|eth|5f|call|22|"; fast_pattern; offset:1;
content:"|22|params|22 3a 5b 7b 22|to|22 3a 22|";
pcre:"/^(?:[0-9])+(?:[A-Za-z0-9]){41}/R";
Raw source ET MALWARE EtherHiding Exfil M2 · 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 EtherHiding Exfil M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.content_type;
    content:"application/json";
    http.request_body;
    content:"|22|method|22 3a 22|eth|5f|call|22|"; fast_pattern; offset:1;
    content:"|22|params|22 3a 5b 7b 22|to|22 3a 22|";
    pcre:"/^(?:[0-9])+(?:[A-Za-z0-9]){41}/R";
    reference:url,jscrambler.com/blog/inside-takedown-resistant-skimmer-tricks;
    classtype:trojan-activity;
    sid:2065530; rev:1;
    metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_10_27, deployment Perimeter, malware_family Etherhiding, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, tag EtherHiding, updated_at 2025_10_27;
)

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