Versions (4)
Version DetailsCurrent
Rev: 1 • Aug 4, 2022, 12:00 PMET MALWARE SSL/TLS Certificate Observed (Link Implant Default)
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE SSL/TLS Certificate Observed (Link Implant Default)"; flow:established,to_client; tls.cert_serial; content:"4D:5B:93:D5:0F:D5:2F:C2:9C:9F:66:4B:62:64:DC:52:D6:E0:B7:D5"; reference:url,github.com/postrequest/link; classtype:domain-c2; sid:2037929; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_08_04, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_04;)
Aug 4, 2022, 12:00 PM
Aug 4, 2022, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 1, 2025, 8:35 PM
rules/emerging-malware.rules