ET EXPLOIT Unknown Command Injection Attempt Inbound (Possible Mirai Activity)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/op_type="; startswith; fast_pattern;
content:"|3b|";
Raw source ET EXPLOIT Unknown Command Injection Attempt Inbound (Possible Mirai Activity) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT Unknown Command Injection Attempt Inbound (Possible Mirai Activity)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/op_type="; startswith; fast_pattern;
    content:"|3b|";
    reference:url,unit42.paloaltonetworks.com/mirai-variant-iot-vulnerabilities/;
    classtype:attempted-user;
    sid:2033272; rev:1;
    metadata:created_at 2021_07_07, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_07, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;
)

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