ET MALWARE W32/Patchwork.Backdoor CnC Check-in M2

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php?b="; nocase;
pcre:"/^[A-F0-9]{30}$/Ri";
http.content_len;
byte_test:0,=,0,0,string,dec;
Raw source ET MALWARE W32/Patchwork.Backdoor CnC Check-in M2 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE W32/Patchwork.Backdoor CnC Check-in M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php?b="; nocase;
    pcre:"/^[A-F0-9]{30}$/Ri";
    http.content_len;
    byte_test:0,=,0,0,string,dec;
    reference:md5,ddeabe234c4084ba379cf3be4fdf503d;
    classtype:command-and-control;
    sid:2025164; rev:5;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_12_21, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_09;
)

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