ET USER_AGENTS ErbiumStealer UA Observed

Query · suricata

flow:to_server,established;
http.user_agent;
content:"Erbium-UA-"; startswith; fast_pattern;
Raw source ET USER_AGENTS ErbiumStealer UA Observed · 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 USER_AGENTS ErbiumStealer UA Observed";
    flow:to_server,established;
    http.user_agent;
    content:"Erbium-UA-"; startswith; fast_pattern;
    reference:url,twitter.com/3xp0rtblog/status/1556256431904546816;
    classtype:trojan-activity;
    sid:2038482; 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, reviewed_at 2025_10_24;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.