ET MALWARE Possible T-RAT Encrypted Zip Request M1

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Possible T-RAT Encrypted Zip Request M1";
    flow:established,to_server;
    http.uri;
    content:".jpg"; offset:7; depth:4;
    http.accept;
    content:"*/*"; bsize:3;
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|MSIE 7.0|3b 20|Windows NT 6.2|3b 20|WOW64|3b 20|Trident/8.0|3b 20 2e|NET4.0C|3b 20 2e|NET4.0E|3b 20 2e|NET CLR 2.0.50727|3b 20 2e|NET CLR 3.0.30729|3b 20 2e|NET CLR 3.5.30729|3b 20|InfoPath.3)"; bsize:162; fast_pattern;
    reference:url,twitter.com/3xp0rtblog/status/1304006897729761280;
    reference:url,www.gdatasoftware.com/blog/trat-control-via-smartphone;
    classtype:command-and-control;
    sid:2031081; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_10_22, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_22;
)