alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (WastedLoader CnC)"; flow:established,to_client; tls.cert_subject; content:"C=CL, L=Santiago, O=Tigomemo Uteendtu GP, OU=Touintsanc Ft4an, CN=cess3wessr.mq"; bsize:79; fast_pattern; reference:url,www.bitdefender.com/files/News/CaseStudies/study/397/Bitdefender-PR-Whitepaper-RIG-creat5362-en-EN.pdf; classtype:domain-c2; sid:2032992; rev:1; metadata:attack_target Client_and_Server, created_at 2021_05_18, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_18, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)