ET MALWARE SystemBC CnC Beacon

Query · suricata

flow:established,to_server;
dsize:<1500;
content:"randomdata|00 00 00 00 00 00 00 00|"; startswith; fast_pattern;
Raw source ET MALWARE SystemBC CnC Beacon · 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-pkt $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE SystemBC CnC Beacon";
    flow:established,to_server;
    dsize:<1500;
    content:"randomdata|00 00 00 00 00 00 00 00|"; startswith; fast_pattern;
    reference:md5,ed44877077716103973cbbebd531f38e;
    reference:url,thedfirreport.com/2024/08/26/blacksuit-ransomware/;
    classtype:trojan-activity;
    sid:2055497; 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_08_26, deployment Perimeter, malware_family SystemBC, confidence High, signature_severity Critical, updated_at 2024_08_26;
)

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