ET INFO External IP Lookup Service Domain (reallyfreegeoip .org) in TLS SNI
Sourceet/open
CreatedFebruary 29, 2024
UpdatedFebruary 29, 2024
Classificationmisc-activity
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO External IP Lookup Service Domain (reallyfreegeoip .org) in TLS SNI"; flow:established,to_server; tls.sni; dotprefix; content:".reallyfreegeoip.org"; endswith; fast_pattern; classtype:misc-activity; sid:2051431; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2024_02_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_02_29, reviewed_at 2024_10_03, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)
Metadata
affected productAny
attack targetClient_Endpoint
created at2024_02_29
deploymentPerimeter
performance impactLow
confidenceHigh
signature severityInformational
updated at2024_02_29
reviewed at2024_10_03
mitre tactic idTA0007
mitre tactic nameDiscovery
mitre technique idT1614
mitre technique nameSystem_Location_Discovery
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