ET MALWARE Legion Loader Activity Observed (legion)

Query · suricata

flow:established,to_server;
http.user_agent;
content:"legion"; fast_pattern; startswith;
http.accept;
content:"text/*"; depth:6; endswith;
http.header_names;
content:"|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|"; depth:30;
Raw source ET MALWARE Legion Loader Activity Observed (legion) · 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 Legion Loader Activity Observed (legion)";
    flow:established,to_server;
    http.user_agent;
    content:"legion"; fast_pattern; startswith;
    http.accept;
    content:"text/*"; depth:6; endswith;
    http.header_names;
    content:"|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|"; depth:30;
    classtype:trojan-activity;
    sid:2029066; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_11_27, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_23;
)

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