ET MALWARE Android Infostealer CnC Check-In

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Android Infostealer CnC Check-In";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/socket.io/?"; fast_pattern; startswith;
    content:"model=";
    content:"EIO=";
    content:"id=";
    content:"transport=";
    content:"release=";
    content:"manf=";
    reference:url,lab52.io/blog/complete-dissection-of-an-apk-with-a-suspicious-c2-server/;
    reference:md5,4f5617ec4668e3406f9bd82dfcf6df6b;
    classtype:command-and-control;
    sid:2035770; rev:1;
    metadata:attack_target Mobile_Client, created_at 2022_04_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_06;
)