ET MALWARE Possible APT40/Dadstache Stage 2 Payload Beacon

Query · suricata

flow:to_server,established;
http.method;
content:"POST";
http.request_body;
content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|file|22 3b 20|filename=|22|";
content:".png|22 0d 0a|Content-Type: video/JPEG|0d 0a 0d 0a 89 50 4e 47|"; distance:0; fast_pattern;
Raw source ET MALWARE Possible APT40/Dadstache Stage 2 Payload Beacon · Suricata
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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 Possible APT40/Dadstache Stage 2 Payload Beacon";
    flow:to_server,established;
    http.method;
    content:"POST";
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|file|22 3b 20|filename=|22|";
    content:".png|22 0d 0a|Content-Type: video/JPEG|0d 0a 0d 0a 89 50 4e 47|"; distance:0; fast_pattern;
    reference:url,www.mycert.org.my/portal/advisory?id=MA-774.022020;
    reference:md5,9cf5fb135c3cc29e79b2a1c78233934b;
    classtype:targeted-activity;
    sid:2029420; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_11, deployment Perimeter, confidence Medium, signature_severity Major, tag c2, updated_at 2020_02_11, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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