Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Cobalt Strike CnC Domain (r1 .57thandnormal .com) in DNS Lookup"; dns.query; content:"r1.57thandnormal.com"; nocase; bsize:20; reference:url,www.trendmicro.com/content/dam/trendmicro/global/en/research/23/vice-society-ransomware-group-targets-manufacturing-companies/iocs-vice-society-ransomware-group-targets-manufacturing-companies-full.txt; classtype:trojan-activity; sid:2043990; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_01_25, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_09_30, reviewed_at 2024_09_30;)