ET MALWARE Corebot Module Download

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Corebot Module Download";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".exx"; endswith;
    http.user_agent;
    content:"Mozilla/5.0 (Windows NT 6.1|3b 20|rv|3a|15.0) Gecko/20100101 Firefox/15.0.1"; fast_pattern; startswith;
    http.header_names;
    content:!"Content-Type|0d 0a|";
    content:!"Accept";
    reference:url,securityintelligence.com/watch-out-for-corebot-new-stealer-in-the-wild/;
    reference:md5,f7dff17acec6b79f3cdad6259cfb2d2c;
    classtype:trojan-activity;
    sid:2021742; rev:3;
    metadata:created_at 2015_09_01, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_06_01;
)