ET MALWARE W32/Beebus HTTP POST CnC Beacon

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/s/asp?"; fast_pattern;
http.user_agent;
content:"Mozilla/4.0 |28|compatible|3B 20 29 0D 0A|"; startswith;
Raw source ET MALWARE W32/Beebus HTTP POST CnC Beacon · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE W32/Beebus HTTP POST CnC Beacon";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/s/asp?"; fast_pattern;
    http.user_agent;
    content:"Mozilla/4.0 |28|compatible|3B 20 29 0D 0A|"; startswith;
    reference:url,blog.fireeye.com/research/2013/02/operation-beebus.html;
    classtype:command-and-control;
    sid:2016342; rev:4;
    metadata:attack_target Client_Endpoint, created_at 2013_02_05, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_09_18, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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