alert dns $HOME_NET any -> any any (msg:"ET MALWARE DNS Query to IcedID Domain (grafielucho .com)"; dns.query; dotprefix; content:".grafielucho.com"; nocase; endswith; reference:url,github.com/PaloAltoNetworks/Unit42-timely-threat-intel/blob/main/2023-10-31-IOCs-for-IcedID-infection.txt; classtype:trojan-activity; sid:2049067; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_11_03, deployment Perimeter, malware_family IcedID, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_26, reviewed_at 2024_01_26;)