ET MALWARE Suspected SmokeLoader Retrieving Next Stage (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/smoke/loader/uploads/"; startswith; fast_pattern;
http.header_names;
content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22;
Raw source ET MALWARE Suspected SmokeLoader Retrieving Next Stage (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 any (
    msg:"ET MALWARE Suspected SmokeLoader Retrieving Next Stage (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/smoke/loader/uploads/"; startswith; fast_pattern;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22;
    reference:md5,bfbf171b4ebc5286c78d718e445c65fb;
    classtype:trojan-activity;
    sid:2035623; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_03_28, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_28;
)

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