ET MALWARE PolarEdge TLS Backdoor Installation Attempt

Query · suricata

flow:established,to_server;
http.uri;
content:"/cgi-bin/"; startswith;
pcre:"/^(?:config|config_mirror)\x2eexp\x3f/R";
content:"/tmp|3b|busybox"; distance:0; fast_pattern;
content:"ftpget"; distance:0;
http.header;
content:"Referer|3a 20|https|3a 2f 2f|";
content:".htm|0d 0a|"; distance:0;
target:dest_ip;
Raw source ET MALWARE PolarEdge TLS Backdoor Installation Attempt · 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 any (
    msg:"ET MALWARE PolarEdge TLS Backdoor Installation Attempt";
    flow:established,to_server;
    http.uri;
    content:"/cgi-bin/"; startswith;
    pcre:"/^(?:config|config_mirror)\x2eexp\x3f/R";
    content:"/tmp|3b|busybox"; distance:0; fast_pattern;
    content:"ftpget"; distance:0;
    http.header;
    content:"Referer|3a 20|https|3a 2f 2f|";
    content:".htm|0d 0a|"; distance:0;
    reference:url,blog.sekoia.io/polaredge-unveiling-an-uncovered-iot-botnet/;
    classtype:attempted-admin;
    sid:2060442; rev:1;
    metadata:affected_product IoT, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_02_28, deployment Perimeter, deployment Internal, malware_family PolarEdge, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_02_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)

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