ET MALWARE MSIL/Spy.Agent.AES Zipped Exfil

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST|20|/|20|";
http.request_body;
content:"file=UEs"; startswith; fast_pattern;
content:"SW5mby50eHS"; distance:0;
Raw source ET MALWARE MSIL/Spy.Agent.AES Zipped Exfil · 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 MSIL/Spy.Agent.AES Zipped Exfil";
    flow:established,to_server;
    http.request_line;
    content:"POST|20|/|20|";
    http.request_body;
    content:"file=UEs"; startswith; fast_pattern;
    content:"SW5mby50eHS"; distance:0;
    reference:md5,654dc14b15a14182f7bd0b73aae7fc79;
    classtype:credential-theft;
    sid:2037730; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_08, deployment Perimeter, malware_family MSIL_Spy_Agent_AES, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_08;
)

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