ET USER_AGENTS Suspicious User-Agent (Installed OK)

Query · suricata

flow:established,to_server;
http.user_agent;
content:"Installed OK"; startswith; nocase;
Raw source ET USER_AGENTS Suspicious User-Agent (Installed OK) · 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 Suspicious User-Agent (Installed OK)";
    flow:established,to_server;
    http.user_agent;
    content:"Installed OK"; startswith; nocase;
    reference:md5,16035440878ec6e93d82c2aeea508630;
    classtype:bad-unknown;
    sid:2030880; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2020_09_15, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_15;
)

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