alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL/TLS Certificate (QakBot)"; flow:established,to_client; tls.cert_subject; bsize:67; content:"C=PT, ST=IO, L=Enbdyd Mpbuv, O=Pswouppu Vnc Inc., CN=ragouxvase.biz"; fast_pattern; reference:url,twitter.com/Unit42_Intel/status/1585046057339207680; classtype:domain-c2; sid:2039577; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_10_26, deployment Perimeter, deprecation_reason Age, malware_family Qbot, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_10_08, reviewed_at 2024_10_08;)