ET MALWARE FlawedGrace CnC Activity

Query · suricata

flow:to_server,established;
dsize:14;
content:"|47 43 52 47|"; offset:4; depth:4;
threshold:type both, track by_src, count 10, seconds 60;
Raw source ET MALWARE FlawedGrace CnC Activity · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET 443 (
    msg:"ET MALWARE FlawedGrace CnC Activity";
    flow:to_server,established;
    dsize:14;
    content:"|47 43 52 47|"; offset:4; depth:4;
    threshold:type both, track by_src, count 10, seconds 60;
    reference:md5,2b1215fb65d33fc6206ab227a3b7e75a;
    classtype:command-and-control;
    sid:2026773; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_11_01, deployment Perimeter, confidence High, signature_severity Major, updated_at 2022_03_22;
)

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