ET MALWARE Win32/Goofy Guineapig CnC Activity (GET) M2

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Goofy Guineapig CnC Activity (GET) M2";
    flow:established,to_server;
    http.request_line;
    content:"GET / HTTP/1.1"; bsize:15;
    http.header_names;
    content:"Authorization|0d 0a|User-Agent|0d 0a|";
    http.user_agent;
    content:"Mozilla|2f|5|2e|0|20 28|Windows|20|NT|20|6|2e|1|3b 20|WOW64|29 20|AppleWebKit|2f|537|2e|36|20 28|KHTML|2c 20|like|20|Gecko|29 20|Chrome|2f|54|2e|0|2e|2840|2e|71|20|Safari|2f|537|2e|36"; bsize:108; fast_pattern;
    http.header;
    content:!"Authorization|3a 20|Basic";
    content:!"Authorization|3a 20|Digest";
    pcre:"/Authorization\x3a\x20[a-zA-Z0-9\x2f\+=]{90,120}\x0d\x0a/";
    reference:md5,a21dec89611368313e138480b3c94835;
    classtype:command-and-control;
    sid:2042946; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_12_15, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_Goofy, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_15, reviewed_at 2025_10_24;
)