alert dns $HOME_NET any -> any any (msg:"ET RETIRED PoisonIvy SPIVY DNS Lookup (leeh0m.org)"; dns_query; content:"leeh0m.org"; depth:10; nocase; endswith; fast_pattern; reference:url,researchcenter.paloaltonetworks.com/2016/04/unit42-new-poison-ivy-rat-variant-targets-hong-kong-pro-democracy-activists/; classtype:trojan-activity; sid:2022753; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_04_22, deployment Perimeter, former_category MALWARE, malware_family PoisonIvy, confidence Medium, signature_severity Critical, tag PoisonIvy, updated_at 2024_12_05;)