Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE DustySky Downeks/Quasar/other DNS Lookup (ftpserverit .otzo.com)"; dns.query; content:"ftpserverit.otzo.com"; depth:20; nocase; endswith; fast_pattern; reference:url,researchcenter.paloaltonetworks.com/2017/01/unit42-downeks-and-quasar-rat-used-in-recent-targeted-attacks-against-governments/; classtype:trojan-activity; sid:2023810; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_01_31, deployment Perimeter, malware_family DustySky_related_implant, confidence Medium, signature_severity Major, updated_at 2020_09_17;)