ET WEB_CLIENT APT/Hafnium SPORTSBALL Webshell Observed Outbound

Query · suricata

flow:established,to_client;
file.data;
content:"<td>logon|3a|<td>";
content:"name=|22|sport|22 20|"; distance:0;
content:"<td>cmd|3a|"; distance:0;
content:"input|20|name=|22|balls|22 20|"; fast_pattern;
content:"name=|22|woods|22|";
content:"name=|22|sky|22|";
Raw source ET WEB_CLIENT APT/Hafnium SPORTSBALL Webshell Observed Outbound · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HTTP_SERVERS any -> $EXTERNAL_NET any (
    msg:"ET WEB_CLIENT APT/Hafnium SPORTSBALL Webshell Observed Outbound";
    flow:established,to_client;
    file.data;
    content:"<td>logon|3a|<td>";
    content:"name=|22|sport|22 20|"; distance:0;
    content:"<td>cmd|3a|"; distance:0;
    content:"input|20|name=|22|balls|22 20|"; fast_pattern;
    content:"name=|22|woods|22|";
    content:"name=|22|sky|22|";
    reference:md5,1a4ab99bbe9adbe2deb0e4b96d82a955;
    classtype:web-application-attack;
    sid:2031812; rev:2;
    metadata:attack_target Web_Server, created_at 2021_03_04, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_04;
)

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