ET MALWARE JSSLoader Initial Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/?id="; startswith;
content:"&type=";
http.request_body;
content:"AAAAAA==";
content:"AAAAAA=="; distance:0;
content:"eyJob3N0Ijoi"; fast_pattern; distance:0;
Raw source ET MALWARE JSSLoader Initial Checkin · 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 JSSLoader Initial Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/?id="; startswith;
    content:"&type=";
    http.request_body;
    content:"AAAAAA==";
    content:"AAAAAA=="; distance:0;
    content:"eyJob3N0Ijoi"; fast_pattern; distance:0;
    reference:url,malwarebytes.app.box.com/s/ym6r7o5hq0rx2nxjbctfv2sw5vx386ni;
    classtype:trojan-activity;
    sid:2038574; rev:1;
    metadata:attack_target Client_and_Server, created_at 2022_08_19, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_19;
)

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