ET MALWARE Specula Framework CnC Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.user_agent;
content:"Specula"; fast_pattern;
Raw source ET MALWARE Specula Framework CnC Activity (POST) · 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 Specula Framework CnC Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.user_agent;
    content:"Specula"; fast_pattern;
    reference:url,trustedsec.com/blog/specula-turning-outlook-into-a-c2-with-one-registry-change;
    reference:url,github.com/trustedsec/specula/blob/a42059ba776c1242b917a5243af613fe5c75f624/lib/handlers/validation.html#L58;
    classtype:trojan-activity;
    sid:2054781; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2024_07_30, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2024_07_30, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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