ET MALWARE Possible Konni Encrypted Stage 2 Payload Inbound via HTTP

Query · suricata

flow:established,from_server;
http.stat_code;
content:"200";
http.response_body;
content:"MhyTiDJJJJ"; startswith;
content:"JJJJJJJLeJJJJJJJJJJeI4"; within:150; fast_pattern;
Raw source ET MALWARE Possible Konni Encrypted Stage 2 Payload Inbound via HTTP · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Possible Konni Encrypted Stage 2 Payload Inbound via HTTP";
    flow:established,from_server;
    http.stat_code;
    content:"200";
    http.response_body;
    content:"MhyTiDJJJJ"; startswith;
    content:"JJJJJJJLeJJJJJJJJJJeI4"; within:150; fast_pattern;
    reference:md5,d41b09aa32633d77a8856dae33b3d7b9;
    classtype:command-and-control;
    sid:2030220; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_05_26, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Konni, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_19;
)

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