ET MALWARE Polonium APT CREEPYSNAIL Backdoor Related Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/ui/chk?mactok="; fast_pattern; startswith;
pcre:"/^[A-F0-9]{32}$/R";
http.host;
pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
http.header_names;
content:!"Referer";
Raw source ET MALWARE Polonium APT CREEPYSNAIL Backdoor Related Activity (GET) · 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 -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE Polonium APT CREEPYSNAIL Backdoor Related Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/ui/chk?mactok="; fast_pattern; startswith;
    pcre:"/^[A-F0-9]{32}$/R";
    http.host;
    pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
    http.header_names;
    content:!"Referer";
    reference:md5,63efa4524e50beeedb68f7eebaadcc5c;
    reference:url,www.welivesecurity.com/2022/10/11/polonium-targets-israel-creepy-malware/;
    classtype:trojan-activity;
    sid:2039151; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_10_11, deployment Perimeter, malware_family Polonium, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_11;
)

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