ET HUNTING Github Request for PNG File With PowerShell

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".png"; endswith;
http.user_agent;
content:"WindowsPowerShell"; fast_pattern;
http.host;
content:"github.com"; endswith;
target:src_ip;
Raw source ET HUNTING Github Request for PNG File With PowerShell · 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 HUNTING Github Request for PNG File With PowerShell";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".png"; endswith;
    http.user_agent;
    content:"WindowsPowerShell"; fast_pattern;
    http.host;
    content:"github.com"; endswith;
    reference:md5,bedd7b113e7db2fc8fb91c74089b9c27;
    classtype:misc-activity;
    sid:2064696; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_09_15, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_15;
    target:src_ip;
)

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