ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.request_body;
content:"PK";
content:"passwords.txt"; distance:0; nocase; fast_pattern;
Raw source ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2 · 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 http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.request_body;
    content:"PK";
    content:"passwords.txt"; distance:0; nocase; fast_pattern;
    classtype:trojan-activity;
    sid:2035015; rev:1;
    metadata:affected_product Any, attack_target Client_Endpoint, created_at 2020_08_06, deployment Perimeter, confidence High, signature_severity Minor, updated_at 2020_08_06;
)

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