ET MALWARE BOUNCEBEAM Backdoor CnC Activity

Query · suricata

flow:established,to_server;
http.uri;
content:"/api/getTask?uniqid="; startswith;
http.host;
content:"cloudflare.5156game.com"; fast_pattern; bsize:23;
Raw source ET MALWARE BOUNCEBEAM Backdoor CnC Activity · 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 http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE BOUNCEBEAM Backdoor CnC Activity";
    flow:established,to_server;
    http.uri;
    content:"/api/getTask?uniqid="; startswith;
    http.host;
    content:"cloudflare.5156game.com"; fast_pattern; bsize:23;
    reference:url,twitter.com/ESETresearch/status/1415542465176735748;
    reference:md5,429914c2cf45355ca4baa95a1dcdffab;
    reference:md5,19b8681e4dd4f9698ec324606a642dd6;
    reference:md5,bded44bf177a52a9ffbd13d077f8747d;
    classtype:command-and-control;
    sid:2033389; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_07_22, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2021_07_22, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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