ET MALWARE Possible PikaBot Java Loader CnC Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
pcre:"/^\/[A-Za-z0-9]{4,6}\/\d{6}$/";
http.user_agent;
content:"Java/"; startswith; fast_pattern;
http.accept;
content:"text|2f|html|2c 20|image|2f|gif|2c 20|image|2f|jpeg|2c 20 2a 3b 20|q|3d 2e|2|2c 20 2a 2f 2a 3b 20|q|3d 2e|2";
http.connection;
content:"keep-alive";
target:src_ip;
Raw source ET MALWARE Possible PikaBot Java Loader CnC Checkin · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Possible PikaBot Java Loader CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/^\/[A-Za-z0-9]{4,6}\/\d{6}$/";
    http.user_agent;
    content:"Java/"; startswith; fast_pattern;
    http.accept;
    content:"text|2f|html|2c 20|image|2f|gif|2c 20|image|2f|jpeg|2c 20 2a 3b 20|q|3d 2e|2|2c 20 2a 2f 2a 3b 20|q|3d 2e|2";
    http.connection;
    content:"keep-alive";
    reference:md5,b5daa41dcb91138f2066513aa12fb9f3;
    classtype:trojan-activity;
    sid:2050875; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, created_at 2024_02_14, deployment Perimeter, performance_impact Moderate, confidence Low, signature_severity Major, updated_at 2024_02_14;
    target:src_ip;
)

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