ET MALWARE Win32/ErbiumStealer CnC Activity (GetBuild)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/api/getBuild?type=x"; startswith;
http.user_agent;
content:"Erbium-UA-"; startswith; fast_pattern;
Raw source ET MALWARE Win32/ErbiumStealer CnC Activity (GetBuild) · 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 Win32/ErbiumStealer CnC Activity (GetBuild)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/api/getBuild?type=x"; startswith;
    http.user_agent;
    content:"Erbium-UA-"; startswith; fast_pattern;
    reference:url,twitter.com/3xp0rtblog/status/1556256431904546816;
    classtype:command-and-control;
    sid:2038481; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_08_09, deployment Perimeter, malware_family Erbium, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_09;
)

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