ET MALWARE Observed Malicious SSL Cert (Blackrota)

Query · suricata

flow:established,to_client;
tls.cert_subject;
content:"C=US, ST=Arizona, L=Scottsdale, O=Amazon, OU=Starfield Class, CN=blackrato.ga"; bsize:77; fast_pattern;
tls.cert_issuer;
content:"C=US, ST=Arizona, L=Scottsdale, O=Amazon, OU=Starfield Class, CN=blackrato.ga"; bsize:77;
Raw source ET MALWARE Observed Malicious SSL Cert (Blackrota) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tls $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Observed Malicious SSL Cert (Blackrota)";
    flow:established,to_client;
    tls.cert_subject;
    content:"C=US, ST=Arizona, L=Scottsdale, O=Amazon, OU=Starfield Class, CN=blackrato.ga"; bsize:77; fast_pattern;
    tls.cert_issuer;
    content:"C=US, ST=Arizona, L=Scottsdale, O=Amazon, OU=Starfield Class, CN=blackrato.ga"; bsize:77;
    reference:md5,04dab9530bbcb7679ff5498400417e40;
    reference:url,blog.netlab.360.com/blackrota-an-obfuscated-backdoor-written-in-go-en/;
    classtype:domain-c2;
    sid:2031236; rev:1;
    metadata:attack_target Client_and_Server, created_at 2020_11_25, deployment Perimeter, malware_family Blackrota, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_25, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;
)

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