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Rev: 1 • Jun 9, 2021, 12:00 PMET MALWARE Observed Puzzlemaker Remote Shell Domain (media-seoengine .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Puzzlemaker Remote Shell Domain (media-seoengine .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"media-seoengine.com"; bsize:19; fast_pattern; reference:url,securelist.com/puzzlemaker-chrome-zero-day-exploit-chain/102771/; reference:md5,d6b850c950379d5ee0f254f7164833e8; classtype:domain-c2; sid:2033127; rev:1; metadata:attack_target Client_and_Server, created_at 2021_06_09, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Jun 9, 2021, 12:00 PM
Jun 9, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 11, 2025, 9:34 PM
rules/emerging-malware.rules