ET MALWARE Crimson RAT CnC Activity (Inbound) M2

Query · suricata

flow:established,to_client;
dsize:<30;
content:"|00 00 00 00 63 6c 79|"; offset:1; depth:7; fast_pattern;
content:"="; distance:8; within:1;
Raw source ET MALWARE Crimson RAT CnC Activity (Inbound) M2 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Crimson RAT CnC Activity (Inbound) M2";
    flow:established,to_client;
    dsize:<30;
    content:"|00 00 00 00 63 6c 79|"; offset:1; depth:7; fast_pattern;
    content:"="; distance:8; within:1;
    reference:url,x.com/naumovax/status/1818646536600822231;
    reference:md5,f5380e7a6e15a0ef27e6f31fcc29ed4d;
    classtype:trojan-activity;
    sid:2054809; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_07_31, deployment Perimeter, malware_family CrimsonRAT, confidence High, signature_severity Critical, updated_at 2024_07_31;
)

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