ET MOBILE_MALWARE Android/Spy.Agent.BEH Variant Activity (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MOBILE_MALWARE Android/Spy.Agent.BEH Variant Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/socket.io/?release="; startswith; fast_pattern;
    content:"&model="; distance:0;
    content:"&EIO="; distance:0;
    content:"&id="; distance:0;
    content:"&transport="; distance:0;
    content:"&manf="; distance:0;
    content:"&sid="; distance:0;
    http.user_agent;
    content:"|28|Linux|3b 20|U|3b 20|Android";
    http.host;
    pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
    http.request_body;
    content:"contactsList";
    content:"phoneNo"; distance:0;
    http.header_names;
    content:!"Referer";
    reference:md5,72670e5480849637e86e0daeddbdb43b;
    reference:url,twitter.com/malwrhunterteam/status/1437787922816806914;
    classtype:trojan-activity;
    sid:2033946; rev:1;
    metadata:created_at 2021_09_14, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_14;
)