ET MALWARE SVCStealer 4.4 CnC Task Checkin (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/get.php"; endswith; fast_pattern;
http.request_body;
content:"tsk|3d 7b|"; startswith;
pcre:"/^(?:(?:[a-z0-9]{8}\x2d)(?:[a-z0-9]{4}\x2d)(?:[a-z0-9]{4}\x2d)(?:[a-z0-9]{4}\x2d)(?:[a-z0-9]{12}\x7d))$/R";
target:src_ip;
Raw source ET MALWARE SVCStealer 4.4 CnC Task Checkin (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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE SVCStealer 4.4 CnC Task Checkin (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/get.php"; endswith; fast_pattern;
    http.request_body;
    content:"tsk|3d 7b|"; startswith;
    pcre:"/^(?:(?:[a-z0-9]{8}\x2d)(?:[a-z0-9]{4}\x2d)(?:[a-z0-9]{4}\x2d)(?:[a-z0-9]{4}\x2d)(?:[a-z0-9]{12}\x7d))$/R";
    reference:url,x.com/naumovax/status/1932001327455797326;
    reference:md5,804abee66ca7c07365c191a87532e137;
    reference:md5,91e9d8beed1cd93b5d4845bbbcda70df;
    classtype:trojan-activity;
    sid:2062829; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_06_09, deployment Perimeter, malware_family SvcStealer, confidence High, signature_severity Critical, tag c2, tag AI_Generated_Description, updated_at 2025_06_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)

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