ET MALWARE MSIL/Small.FU Variant CnC Activity M2

Query · suricata

flow:established,to_server;
http.request_line;
content:"GET /gateonl.php?hwid="; startswith; fast_pattern;
content:"&cpuname="; distance:0;
content:"&gpuname="; distance:0;
content:"&cpu="; distance:0;
http.header_names;
content:!"|0d 0a|Referer|0d 0a|";
content:!"|0d 0a|Accept|0d 0a|";
content:!"|0d 0a|User-Agent|0d 0a|";
Raw source ET MALWARE MSIL/Small.FU Variant CnC Activity 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 MSIL/Small.FU Variant CnC Activity M2";
    flow:established,to_server;
    http.request_line;
    content:"GET /gateonl.php?hwid="; startswith; fast_pattern;
    content:"&cpuname="; distance:0;
    content:"&gpuname="; distance:0;
    content:"&cpu="; distance:0;
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    content:!"|0d 0a|Accept|0d 0a|";
    content:!"|0d 0a|User-Agent|0d 0a|";
    reference:md5,72513b6c906dcac441a146c8ebf256e7;
    classtype:command-and-control;
    sid:2033925; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_09_10, deployment Perimeter, malware_family MSIL_Small_FU, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_10;
)

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