ET MALWARE Myth Stealer Data Exfiltration Attempt M2

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Myth Stealer Data Exfiltration Attempt M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/myth/api";
    http.header;
    content:"key|3a 20|myth-"; fast_pattern;
    http.request_body;
    content:" KPtxt.snekot";
    reference:url,www.trellix.com/blogs/research/demystifying-myth-stealer-a-rust-based-infostealer/;
    reference:url,www.reddit.com/r/cybersecurity/comments/1lndppc/i_was_infected_by_a_trojan_from_combatshellcom/;
    reference:url,tria.ge/250629-dkj41sfj6x/behavioral1;
    reference:md5,4a0998be49a361908a5adaf8d0665a41;
    classtype:trojan-activity;
    sid:2063265; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state TLSDecrypt, created_at 2025_07_01, deployment Perimeter, malware_family MythStealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_07_01, mitre_tactic_id TA0037, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
    target:src_ip;
)