alert dns $HOME_NET any -> any any (msg:"ET MALWARE ShadowHammer DNS Lookup"; dns.query; content:"asushotfix.com"; nocase; endswith; reference:url,motherboard.vice.com/en_us/article/pan9wn/hackers-hijacked-asus-software-updates-to-install-backdoors-on-thousands-of-computers; classtype:trojan-activity; sid:2027109; rev:3; metadata:created_at 2019_03_25, malware_family ShadowHammer, confidence Medium, signature_severity Major, updated_at 2020_09_17;)