alert dns $HOME_NET any -> any any (msg:"ET MALWARE PROMETHIUM/StrongPity DNS Lookup (updatesync .com)"; dns.query; content:"updatesync.com"; depth:14; nocase; endswith; fast_pattern; reference:url,securelist.com/blog/research/76147/on-the-strongpity-waterhole-attacks-targeting-italian-and-belgian-encryption-users/; reference:url,download.microsoft.com/download/E/B/0/EB0F50CC-989C-4B66-B7F6-68CD3DC90DE3/Microsoft_Security_Intelligence_Report_Volume_21_English.pdf; classtype:trojan-activity; sid:2023643; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_12_14, deployment Perimeter, malware_family Truvasys, malware_family PROMETHIUM_StrongPity, confidence Medium, signature_severity Major, updated_at 2020_09_17;)