alert dns $HOME_NET any -> any any (msg:"ET MALWARE JokerSpy Domain in DNS Lookup (app .influmarket .org)"; dns.query; dotprefix; content:".app.influmarket.org"; nocase; endswith; reference:url,www.elastic.co/security-labs/inital-research-of-jokerspy; reference:url,www.bitdefender.com/blog/labs/fragments-of-cross-platform-backdoor-hint-at-larger-mac-os-attack/; classtype:domain-c2; sid:2046692; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_06_29, deployment Perimeter, malware_family JokerSpy, confidence High, signature_severity Major, tag Backdoor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_29;)