ET EXPLOIT Possible Mirai Infection Attempt via OS Command Injection Outbound (CVE-2021-32305)

Query · suricata

flow:to_server,established;
http.method;
content:"GET";
http.uri;
content:"/search.php?search=|22 3b|/bin/bash+wget+http://"; fast_pattern;
pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/R";
content:"|3b|+"; distance:0; within:50;
Raw source ET EXPLOIT Possible Mirai Infection Attempt via OS Command Injection Outbound (CVE-2021-32305) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http [$HOME_NET,$HTTP_SERVERS] any -> any any (
    msg:"ET EXPLOIT Possible Mirai Infection Attempt via OS Command Injection Outbound (CVE-2021-32305)";
    flow:to_server,established;
    http.method;
    content:"GET";
    http.uri;
    content:"/search.php?search=|22 3b|/bin/bash+wget+http://"; fast_pattern;
    pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/R";
    content:"|3b|+"; distance:0; within:50;
    reference:url,unit42.paloaltonetworks.com/cve-2021-32305-websvn/;
    reference:cve,2021-32305;
    classtype:attempted-admin;
    sid:2033856; rev:3;
    metadata:created_at 2021_08_31, cve CVE_2021_32305, deployment Perimeter, malware_family Mirai, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_22, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;
)

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