ET MALWARE Py/MechaFlounder CnC Activity - Reporting Directory Change Command Success

Query · suricata

flow:established,to_server;
content:!"HTTP|2f|";
content:"2A2A6469726563746F7279206368616E6765642073756363657373"; fast_pattern;
Raw source ET MALWARE Py/MechaFlounder CnC Activity - Reporting Directory Change Command Success · 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 Py/MechaFlounder CnC Activity - Reporting Directory Change Command Success";
    flow:established,to_server;
    content:!"HTTP|2f|";
    content:"2A2A6469726563746F7279206368616E6765642073756363657373"; fast_pattern;
    reference:url,unit42.paloaltonetworks.com/new-python-based-payload-mechaflounder-used-by-chafer/;
    classtype:command-and-control;
    sid:2027053; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2019_03_06, deployment Perimeter, malware_family MechaFlounder, performance_impact Low, confidence High, signature_severity Major, tag APT, tag Chafer, tag Python, updated_at 2019_07_26;
)

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