ET MALWARE Golang Easy Stealer Activiy (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/apache"; bsize:7; fast_pattern;
http.user_agent;
content:"Go-http-client/"; nocase; startswith;
http.request_body;
pcre:"/^[0-9a-f]{32}\x3d\x26/";
content:"|25 35 42|BUILD_ID|25 35 44|";
http.header_names;
content:!"Referer";
target:src_ip;
Raw source ET MALWARE Golang Easy Stealer Activiy (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 Golang Easy Stealer Activiy (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/apache"; bsize:7; fast_pattern;
    http.user_agent;
    content:"Go-http-client/"; nocase; startswith;
    http.request_body;
    pcre:"/^[0-9a-f]{32}\x3d\x26/";
    content:"|25 35 42|BUILD_ID|25 35 44|";
    http.header_names;
    content:!"Referer";
    reference:url,www.bridewell.com/insights/blogs/detail/uncovering-the-easy-stealer-infostealer;
    reference:md5,417cfabeee01bee425e071a9d8828170;
    reference:md5,751f30fc1993b036c41fd04da011f3f9;
    classtype:trojan-activity;
    sid:2048896; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_10_25, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_25, reviewed_at 2023_10_25;
    target:src_ip;
)

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