ET MALWARE METALJACK APT32 CnC Host Checkin

Query · suricata

flow:established,to_server;
http.uri;
content:".png?CN="; fast_pattern;
content:"&UN="; distance:0;
content:"&C="; distance:0;
Raw source ET MALWARE METALJACK APT32 CnC Host Checkin · 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 METALJACK APT32 CnC Host Checkin";
    flow:established,to_server;
    http.uri;
    content:".png?CN="; fast_pattern;
    content:"&UN="; distance:0;
    content:"&C="; distance:0;
    reference:url,www.fireeye.com/blog/threat-research/2020/04/apt32-targeting-chinese-government-in-covid-19-related-espionage.html;
    reference:md5,d739f10933c11bd6bd9677f91893986c;
    classtype:targeted-activity;
    sid:2029997; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_04_23, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_23;
)

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