ET MALWARE Stealth Soldier Backdoor Related Activity M1 (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/Server/Request"; bsize:15; fast_pattern;
http.header_names;
content:!"Referer";
content:"|0d 0a|IndexError|0d 0a|User-Agent|0d 0a|";
http.user_agent;
content:"Stealth Soldier";
target:src_ip;
Raw source ET MALWARE Stealth Soldier Backdoor Related Activity M1 (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 Stealth Soldier Backdoor Related Activity M1 (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/Server/Request"; bsize:15; fast_pattern;
    http.header_names;
    content:!"Referer";
    content:"|0d 0a|IndexError|0d 0a|User-Agent|0d 0a|";
    http.user_agent;
    content:"Stealth Soldier";
    reference:md5,0db6239ad0755392c31a09e58773cd3b;
    reference:md5,a418886a31852be25064d3573f2bc87d;
    reference:md5,1ea8a827ad4c565b1c2ae43b0a020092;
    reference:url,research.checkpoint.com/2023/stealth-soldier-backdoor-used-in-targeted-espionage-attacks-in-north-africa/;
    classtype:trojan-activity;
    sid:2046204; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_06_12, deployment Perimeter, performance_impact Low, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_12;
    target:src_ip;
)

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