alert dns $HOME_NET any -> any any (msg:"ET MALWARE Spora Ransomware DNS Query"; dns.query; content:"spora.biz"; depth:9; nocase; endswith; fast_pattern; reference:url,www.bleepingcomputer.com/news/security/spora-ransomware-works-offline-has-the-most-sophisticated-payment-site-as-of-yet/; reference:md5,41de296c5bcfc24fc0f16b1e997d9aa5; classtype:trojan-activity; sid:2023887; rev:5; metadata:attack_target Client_Endpoint, created_at 2017_02_09, deployment Perimeter, malware_family Spora, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_17, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)