ET MALWARE HTTP POST with Suspicious User-Agent Observed - Possible ZLoader Activity M2

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.user_agent;
content:"User metrics"; fast_pattern;
target:src_ip;
Raw source ET MALWARE HTTP POST with Suspicious User-Agent Observed - Possible ZLoader Activity 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 HTTP POST with Suspicious User-Agent Observed - Possible ZLoader Activity M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.user_agent;
    content:"User metrics"; fast_pattern;
    reference:url,www.zscaler.com/blogs/security-research/zloader-no-longer-silent-night;
    classtype:trojan-activity;
    sid:2050648; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, created_at 2024_01_31, deployment Perimeter, deployment SSLDecrypt, malware_family Zloader, performance_impact Low, confidence Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_31;
    target:src_ip;
)

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