ET MALWARE Possible Encoded Wide PowerShell (IEX) in Certificate Inbound

Query · suricata

flow:established,from_server;
http.stat_code;
content:"200";
file.data;
content:"-----BEGIN|20|CERTIFICATE-----|0d 0a|YVFCb"; depth:40; fast_pattern;
Raw source ET MALWARE Possible Encoded Wide PowerShell (IEX) in Certificate Inbound · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Possible Encoded Wide PowerShell (IEX) in Certificate Inbound";
    flow:established,from_server;
    http.stat_code;
    content:"200";
    file.data;
    content:"-----BEGIN|20|CERTIFICATE-----|0d 0a|YVFCb"; depth:40; fast_pattern;
    reference:url,blog.trendmicro.com/trendlabs-security-intelligence/cve-2019-2725-exploited-and-certificate-files-used-for-obfuscation-to-deliver-monero-miner/;
    classtype:trojan-activity;
    sid:2027462; rev:2;
    metadata:created_at 2019_06_12, cve CVE_2019_2725, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2020_08_31;
)

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