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Rev: 1 • Dec 14, 2020, 12:00 PMET MALWARE [Fireeye] Observed Backdoor.SUNBURST CnC Domain (thedoccloud .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE [Fireeye] Observed Backdoor.SUNBURST CnC Domain (thedoccloud .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".thedoccloud.com"; endswith; fast_pattern; reference:url,www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html; classtype:trojan-activity; sid:2031362; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_14, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Dec 14, 2020, 12:00 PM
Dec 14, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 15, 2025, 9:36 PM
rules/emerging-malware.rules