ET MALWARE DarkHotel Downloader CnC Beacon 2

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.request_body;
content:"name=|22|banner|22 0d 0a|"; fast_pattern;
content:"name=|22|jpg|22 0d 0a|"; distance:0;
content:"name=|22|userfile|22 3b 0d 0a|"; distance:0;
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE DarkHotel Downloader CnC Beacon 2 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE DarkHotel Downloader CnC Beacon 2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.request_body;
    content:"name=|22|banner|22 0d 0a|"; fast_pattern;
    content:"name=|22|jpg|22 0d 0a|"; distance:0;
    content:"name=|22|userfile|22 3b 0d 0a|"; distance:0;
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:url,labs.bitdefender.com/2017/07/inexsmar-an-unusual-darkhotel-campaign/;
    classtype:targeted-activity;
    sid:2024483; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_07_20, deployment Perimeter, malware_family DarkHotel, confidence High, signature_severity Major, tag Targeted, tag APT, tag DarkHotel, tag c2, updated_at 2020_08_10, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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