ET MALWARE Exorcist 2.0 Ransomware CnC Activity

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Exorcist 2.0 Ransomware CnC Activity";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:!".";
    http.header.raw;
    content:"User-Agent|3a 20|Mozilla/4.0 (compatible|3b 20|MSIE 6.0b|3b 20|Windows NT 5.0|3b 20|.NET CLR 1.0.2914)|20 0d 0a|"; fast_pattern;
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    http.request_body;
    content:"d="; depth:2;
    isdataat:100,relative;
    content:"|0d 0a|"; distance:0;
    content:"|0d 0a|"; distance:0;
    content:"|0d 0a|"; distance:0;
    content:"|0d 0a|"; distance:0;
    content:"|0d 0a|"; distance:0;
    content:"|0d 0a|"; distance:0;
    content:"|0d 0a|"; distance:0;
    reference:md5,9e5c89c84cdbf460fc6857c4e32dafdf;
    classtype:command-and-control;
    sid:2030906; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_09_24, deployment Perimeter, malware_family Exorcist_Ransomware, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_11, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)