ET MALWARE Observed Malicious SSL Cert (Bazar Backdoor)

Query · suricata

flow:established,to_client;
tls.cert_subject;
content:"C=--, ST=SomeState, L=SomeCity, O=SomeOrganization, OU=SomeOrganizationalUnit, CN=mail.paolemahta.icu";
content:"root@mail.paolemahta.icu"; fast_pattern;
Raw source ET MALWARE Observed Malicious SSL Cert (Bazar Backdoor) · 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 (Bazar Backdoor)";
    flow:established,to_client;
    tls.cert_subject;
    content:"C=--, ST=SomeState, L=SomeCity, O=SomeOrganization, OU=SomeOrganizationalUnit, CN=mail.paolemahta.icu";
    content:"root@mail.paolemahta.icu"; fast_pattern;
    reference:md5,4fd5867c45716f0a25c74f3510984cf2;
    reference:url,twitter.com/bryceabdo/status/1300787997755891712;
    classtype:domain-c2;
    sid:2030820; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2020_09_01, deployment Perimeter, malware_family Bazar, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2025_07_24, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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