ET MOBILE_MALWARE Android Nexus Banking Botnet Activity (GET)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MOBILE_MALWARE Android Nexus Banking Botnet Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri.raw;
    content:"//api/?param="; startswith; fast_pattern;
    content:"&value="; distance:0;
    content:"&botid="; distance:0;
    content:"&method=bots.update&access="; distance:0;
    http.header_names;
    content:!"Referer";
    reference:md5,d4c6871dbd078685cb138a499113d280;
    reference:url,www.virusbulletin.com/blog/2023/10/new-paper-nexus-android-banking-botnet-compromising-cc-panels-and-dissecting-mobile-appinjects/;
    classtype:command-and-control;
    sid:2048893; rev:1;
    metadata:attack_target Mobile_Client, created_at 2023_10_24, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_24, reviewed_at 2023_10_24;
    target:src_ip;
)