alert dns $HOME_NET any -> any any (msg:"ET MALWARE APT33 CnC Domain in DNS Lookup"; dns.query; content:"trojan1117.hopto.org"; nocase; endswith; reference:url,go.recordedfuture.com/hubfs/reports/cta-2019-0626.pdf; classtype:targeted-activity; sid:2027642; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_06_28, deployment Perimeter, confidence High, signature_severity Major, updated_at 2020_09_17;)