ET MALWARE SvcStealer Data Exfiltration Attempt

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/svcstealer"; startswith; fast_pattern;
http.request_body;
content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|log|22 3b 20|filename|3d 22|";
pcre:"/^[A-F0-9]{22}\x22/R";
content:"PK"; distance:0;
target:src_ip;
Raw source ET MALWARE SvcStealer Data Exfiltration Attempt · 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 Data Exfiltration Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/svcstealer"; startswith; fast_pattern;
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|log|22 3b 20|filename|3d 22|";
    pcre:"/^[A-F0-9]{22}\x22/R";
    content:"PK"; distance:0;
    reference:md5,06635111468af8497979f05ccd5bc2ea;
    reference:url,app.any.run/tasks/9a3ecb79-69f5-4fe9-a7ef-ec5535471bcb;
    classtype:trojan-activity;
    sid:2061022; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2025_03_21, deployment Perimeter, malware_family SvcStealer, performance_impact Low, confidence High, signature_severity Major, tag InfoStealer, updated_at 2025_03_21, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1567, mitre_technique_name Exfiltration_Over_Web_Service;
    target:src_ip;
)

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