ET MALWARE Sidecopy APT Related Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:!".asp";
content:!".php";
content:!".htm";
http.header_names;
content:!"Referer";
content:!"User-Agent";
content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|";
http.request_body;
content:"anvaro=|25 32 30|"; startswith; fast_pattern;
target:src_ip;
Raw source ET MALWARE Sidecopy APT Related Activity (POST) · 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 Sidecopy APT Related Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:!".asp";
    content:!".php";
    content:!".htm";
    http.header_names;
    content:!"Referer";
    content:!"User-Agent";
    content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|";
    http.request_body;
    content:"anvaro=|25 32 30|"; startswith; fast_pattern;
    reference:url,twitter.com/fmc_nan/status/1634096201577660416;
    reference:md5,30e8c453d72000d647435d92ffa94616;
    classtype:trojan-activity;
    sid:2044645; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_03_16, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_16;
    target:src_ip;
)

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