ET MALWARE ELF/RedXOR CnC Response

Query · suricata

flow:established,from_server;
http.stat_code;
content:"200";
http.content_len;
content:"00000"; startswith;
http.header;
content:"Total-Length|3a 20|00000"; fast_pattern;
Raw source ET MALWARE ELF/RedXOR CnC Response · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET MALWARE ELF/RedXOR CnC Response";
    flow:established,from_server;
    http.stat_code;
    content:"200";
    http.content_len;
    content:"00000"; startswith;
    http.header;
    content:"Total-Length|3a 20|00000"; fast_pattern;
    reference:url,www.intezer.com/blog/malware-analysis/new-linux-backdoor-redxor-likely-operated-by-chinese-nation-state-actor/;
    classtype:command-and-control;
    sid:2031935; rev:1;
    metadata:affected_product Linux, attack_target Client_and_Server, created_at 2021_03_11, deployment Perimeter, malware_family RedXOR, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_11;
)

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