ET INFO Observed External IP Lookup Domain (ipbase .com in TLS SNI)

SID: 2036561Rev: 30 viewsHistory

Sourceet/open

CreatedMay 11, 2022

UpdatedNovember 26, 2024

Classificationbad-unknown

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed External IP Lookup Domain (ipbase .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"ipbase.com"; bsize:10; fast_pattern; classtype:bad-unknown; sid:2036561; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_05_11, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_11_26, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)

Metadata

attack targetClient_Endpoint

created at2022_05_11

deploymentPerimeter

performance impactLow

confidenceHigh

signature severityInformational

updated at2024_11_26

mitre tactic idTA0007

mitre tactic nameDiscovery

mitre technique idT1614

mitre technique nameSystem_Location_Discovery

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