ET MALWARE ACR/Amatera Stealer CnC Exfil (POST) M1

Query · suricata

flow:established,to_server;
urilen:5;
http.method;
content:"POST";
http.uri;
content:"/Up/"; startswith; fast_pattern;
pcre:"/^\x2fUp\x2f\w$/";
http.connection;
content:"close";
http.content_type;
content:"application/octet-stream";
http.header_names;
content:!"|0d 0a|referer|0d 0a|"; nocase;
http.request_body;
content:"|50 4b 03 04|"; startswith;
target:src_ip;
Raw source ET MALWARE ACR/Amatera Stealer CnC Exfil (POST) M1 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE ACR/Amatera Stealer CnC Exfil (POST) M1";
    flow:established,to_server;
    urilen:5;
    http.method;
    content:"POST";
    http.uri;
    content:"/Up/"; startswith; fast_pattern;
    pcre:"/^\x2fUp\x2f\w$/";
    http.connection;
    content:"close";
    http.content_type;
    content:"application/octet-stream";
    http.header_names;
    content:!"|0d 0a|referer|0d 0a|"; nocase;
    http.request_body;
    content:"|50 4b 03 04|"; startswith;
    reference:md5,ed928383f02f205f92daf0b2d91c78de;
    classtype:command-and-control;
    sid:2062510; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_05_21, deployment Perimeter, malware_family Amatera, confidence High, signature_severity Critical, tag c2, updated_at 2025_05_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)

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