Versions (4)
Version DetailsCurrent
Rev: 1 • Aug 26, 2021, 12:00 PMET MALWARE FIN8 SARDONIC CnC Domain in DNS Lookup (api-cdn .net)
alert dns $HOME_NET any -> any any (msg:"ET MALWARE FIN8 SARDONIC CnC Domain in DNS Lookup (api-cdn .net)"; dns.query; content:"api-cdn.net"; nocase; bsize:11; reference:url,www.bitdefender.com/blog/labs/fin8-threat-actor-spotted-once-again-with-new-sardonic-backdoor/; classtype:domain-c2; sid:2033811; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_08_26, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_26;)
Aug 26, 2021, 12:00 PM
Aug 26, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 9, 2025, 9:34 PM
rules/emerging-malware.rules