ET MALWARE Win32/Irafau Backdoor CnC Activity (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Irafau Backdoor CnC Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:>44;
    content:"/search?q="; startswith;
    content:"02X"; distance:3; within:3;
    content:"02X&cvid="; distance:15; within:21; fast_pattern;
    content:"llu"; endswith;
    reference:url,bitdefender.com/files/News/CaseStudies/study/426/Bitdefender-PR-Whitepaper-BackdoorDiplomacy-creat6507-en-EN.pdf;
    classtype:trojan-activity;
    sid:2042163; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_12_07, deployment Perimeter, malware_family Win32_Irafau, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_07;
)