ET MALWARE Win32/SystemBC CnC Checkin (null key) M2

Query · suricata

flow:established,to_server;
dsize:100;
content:"|00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00|"; startswith;
content:"|89 41|"; distance:2; within:2;
content:"|46 ad 57 90|"; fast_pattern; endswith;
Raw source ET MALWARE Win32/SystemBC CnC Checkin (null key) 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 $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/SystemBC CnC Checkin (null key) M2";
    flow:established,to_server;
    dsize:100;
    content:"|00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00|"; startswith;
    content:"|89 41|"; distance:2; within:2;
    content:"|46 ad 57 90|"; fast_pattern; endswith;
    reference:md5,b8fb4ba9ef16fcaa442c2857bb045640;
    classtype:command-and-control;
    sid:2033005; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_05_20, deployment Perimeter, malware_family SystemBC, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_20;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.