ET MALWARE Synapse/Lambda Ransomware CnC Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.user_agent;
content:"AppleWebKit/587.38|20 28|KHTML, like Gecko|29|";
http.request_body;
content:"J325q4JURN"; fast_pattern; startswith;
target:src_ip;
Raw source ET MALWARE Synapse/Lambda Ransomware CnC Checkin · 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 Synapse/Lambda Ransomware CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.user_agent;
    content:"AppleWebKit/587.38|20 28|KHTML, like Gecko|29|";
    http.request_body;
    content:"J325q4JURN"; fast_pattern; startswith;
    reference:md5,4b33216a968a3a12895b87b9ee258637;
    reference:url,twitter.com/rivitna2/status/1757053934852583891;
    classtype:trojan-activity;
    sid:2050809; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, created_at 2024_02_13, deployment Perimeter, malware_family Synapse, malware_family Lambda, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_02_13;
    target:src_ip;
)

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