ET MALWARE Possible Java/Downloader Observed in Pawn Storm CVE-2015-2590 1

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Possible Java/Downloader Observed in Pawn Storm CVE-2015-2590 1";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/PhantomSuper.class"; fast_pattern;
    http.header;
    content:"Java/";
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:url,blog.trendmicro.com/trendlabs-security-intelligence/an-in-depth-look-at-how-pawn-storms-java-zero-day-was-used/;
    classtype:trojan-activity;
    sid:2021557; rev:3;
    metadata:created_at 2015_07_31, cve CVE_2015_2590, confidence Medium, signature_severity Major, tag CISA_KEV, updated_at 2020_05_29;
)