ET MALWARE Xbagger Macro Encrypted DL Jun 13 2016

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Xbagger Macro Encrypted DL Jun 13 2016";
    flow:established,to_server;
    http.uri;
    content:".jpg?"; fast_pattern;
    pcre:"/^\/[a-z0-9_-]+\.jpg\?[A-Za-z0-9]{2,10}=\d{1,4}$/";
    http.user_agent;
    content:"MSIE 7.0|3b 20|Windows NT";
    http.header;
    content:"Range";
    http.header_names;
    content:!"Referer|0d 0a|";
    classtype:trojan-activity;
    sid:2022895; rev:5;
    metadata:created_at 2016_06_14, performance_impact Significant, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_22;
)