ET RETIRED Android/MMRAT Data Exfiltration Attempt

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/system/apps";
http.header;
content:"Authorization|3a 20|Bearer";
http.user_agent;
content:"okhttp/";
http.request_body;
content:"|7b 22|deviceId|22 3a 22|"; startswith;
pcre:"/^[a-f0-9]{16}/R";
content:"|22 2c 22|appInfos|22 3a 5b 7b 22|packageName|22 3a 22|"; fast_pattern;
target:src_ip;
Raw source ET RETIRED Android/MMRAT Data Exfiltration Attempt · 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 RETIRED Android/MMRAT Data Exfiltration Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/system/apps";
    http.header;
    content:"Authorization|3a 20|Bearer";
    http.user_agent;
    content:"okhttp/";
    http.request_body;
    content:"|7b 22|deviceId|22 3a 22|"; startswith;
    pcre:"/^[a-f0-9]{16}/R";
    content:"|22 2c 22|appInfos|22 3a 5b 7b 22|packageName|22 3a 22|"; fast_pattern;
    reference:url,www.trendmicro.com/en_us/research/23/h/mmrat-carries-out-bank-fraud-via-fake-app-stores.html;
    reference:md5,5b90ee49ed678379f1a8be9683b3fc99;
    classtype:trojan-activity;
    sid:2048084; rev:2;
    metadata:affected_product Android, attack_target Client_Endpoint, created_at 2023_09_13, deployment Perimeter, former_category MOBILE_MALWARE, malware_family MMRAT, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_04_17, reviewed_at 2025_04_17;
    target:src_ip;
)

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