ET RETIRED SOMNIRECORD Backdoor PROBE Command in DNS Query

Query · suricata

content:"|00 00 10|"; offset:12;
dns.query;
content:"-PROBE"; fast_pattern;
pcre:"/^[a-z0-9]{3}-PROBE/i";
target:src_ip;
Raw source ET RETIRED SOMNIRECORD Backdoor PROBE Command in DNS Query · 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 dns $HOME_NET any -> any any (
    msg:"ET RETIRED SOMNIRECORD Backdoor PROBE Command in DNS Query";
    content:"|00 00 10|"; offset:12;
    dns.query;
    content:"-PROBE"; fast_pattern;
    pcre:"/^[a-z0-9]{3}-PROBE/i";
    reference:url,www.elastic.co/security-labs/not-sleeping-anymore-somnirecords-wakeup-call;
    classtype:trojan-activity;
    sid:2044744; rev:5;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_22, deployment Perimeter, former_category MALWARE, malware_family SOMNIRECORD, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_30, reviewed_at 2024_09_30;
    target:src_ip;
)

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