ET MALWARE Compromised Chat Application Related User-Agent (Chrorne)

Query · suricata

flow:established,to_server;
http.user_agent;
content:"Chrorne"; bsize:7; fast_pattern;
Raw source ET MALWARE Compromised Chat Application Related User-Agent (Chrorne) · Suricata
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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 Compromised Chat Application Related User-Agent (Chrorne)";
    flow:established,to_server;
    http.user_agent;
    content:"Chrorne"; bsize:7; fast_pattern;
    reference:url,www.trendmicro.com/en_us/research/22/l/probing-weaponized-chat-applications-abused-in-supply-chain-atta.html;
    classtype:trojan-activity;
    sid:2043100; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_12_29, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_29;
)

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