alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed SystemBC CnC Domain in DNS Query"; dns.query; content:"asdasd08.com"; nocase; depth:12; endswith; reference:url,news.sophos.com/en-us/2020/12/16/systembc; classtype:trojan-activity; sid:2031427; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_17, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_17;)