alert dns $HOME_NET any -> any any (msg:"ET MALWARE Sakula DNS Lookup (mail.cbppnews.com)"; dns_query; content:"mail.cbppnews.com"; depth:17; nocase; endswith; fast_pattern; reference:url,www.fidelissecurity.com/sites/default/files/FTA_1020_Fidelis_Inocnation_FINAL.pdf; classtype:trojan-activity; sid:2022272; rev:4; metadata:created_at 2015_12_17, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_09_28;)