ET EXPLOIT Trenda Router AC11 RCE Outbound (CVE-2021-31755)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/goform/setmac"; fast_pattern;
http.request_body;
content:"&mac=";
content:"|3b|"; distance:0; within:40;
Raw source ET EXPLOIT Trenda Router AC11 RCE Outbound (CVE-2021-31755) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http [$HOME_NET,$HTTP_SERVERS] any -> any any (
    msg:"ET EXPLOIT Trenda Router AC11 RCE Outbound (CVE-2021-31755)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/goform/setmac"; fast_pattern;
    http.request_body;
    content:"&mac=";
    content:"|3b|"; distance:0; within:40;
    reference:url,www.fortinet.com/blog/threat-research/the-ghosts-of-mirai;
    reference:cve,2021-31755;
    classtype:attempted-admin;
    sid:2033285; rev:1;
    metadata:created_at 2021_07_08, cve CVE_2021_31755, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_08;
)

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