ET MALWARE Possible Duqu 2.0 Accessing backdoor over 443

Query · suricata

flow:to_server,established;
content:"romanian.antihacker"; fast_pattern;
Raw source ET MALWARE Possible Duqu 2.0 Accessing backdoor over 443 · 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 tcp any any -> $HOME_NET 443 (
    msg:"ET MALWARE Possible Duqu 2.0 Accessing backdoor over 443";
    flow:to_server,established;
    content:"romanian.antihacker"; fast_pattern;
    reference:url,securelist.com/blog/research/70504/the-mystery-of-duqu-2-0-a-sophisticated-cyberespionage-actor-returns/;
    classtype:trojan-activity;
    sid:2021242; rev:2;
    metadata:created_at 2015_06_10, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;
)

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