ET MALWARE Observed Suspected TA453 Related Domain (metaemailsecurity .com in TLS SNI)
Sourceet/open
CreatedDecember 4, 2023
UpdatedMarch 4, 2024
Classificationdomain-c2
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Suspected TA453 Related Domain (metaemailsecurity .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".MetaeMailSecurity.com"; endswith; fast_pattern; reference:url,filter.watch/en/wp-content/uploads/sites/2/2023/11/Hacker-Watch-Jan-Nov-2023.pdf; reference:url,twitter.com/filterbaan; classtype:domain-c2; sid:2049462; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_12_04, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_04, reviewed_at 2024_03_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)
References
Metadata
attack targetClient_Endpoint
created at2023_12_04
deploymentPerimeter
deprecation reasonAge
performance impactLow
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2024_03_04
reviewed at2024_03_04
mitre tactic idTA0011
mitre tactic nameCommand_And_Control
mitre technique idT1071
mitre technique nameApplication_Layer_Protocol
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