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Rev: 1 • Apr 23, 2021, 12:00 PMET MALWARE APT-C-23 MICROPSIA Variant CnC Domain in DNS Lookup (linda-callaghan .icu)
alert dns $HOME_NET any -> any any (msg:"ET MALWARE APT-C-23 MICROPSIA Variant CnC Domain in DNS Lookup (linda-callaghan .icu)"; dns.query; content:"linda-callaghan.icu"; nocase; bsize:19; reference:url,about.fb.com/wp-content/uploads/2021/04/Technical-threat-report-Arid-Viper-April-2021.pdf; classtype:domain-c2; sid:2032811; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_04_23, deployment Perimeter, malware_family MICROPSIA, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_23;)
Apr 23, 2021, 12:00 PM
Apr 23, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 12, 2025, 9:34 PM
rules/emerging-malware.rules