ET INFO Observed External IP Lookup Domain (ip-info .ff .avast .com) in TLS SNI

SID: 2050282Rev: 194 viewsHistory

Sourceet/open

CreatedJanuary 22, 2024

UpdatedJanuary 22, 2024

Classificationmisc-activity

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed External IP Lookup Domain (ip-info .ff .avast .com) in TLS SNI"; flow:established,to_server; tls.sni; bsize:20; content:"ip-info.ff.avast.com"; fast_pattern; reference:url,ip-info.ff.avast.com; classtype:misc-activity; sid:2050282; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2024_01_22, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_01_22, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)

References

url	ip-info.ff.avast.com

Metadata

affected productAny

attack targetClient_Endpoint

created at2024_01_22

deploymentPerimeter

performance impactLow

confidenceHigh

signature severityInformational

updated at2024_01_22

mitre tactic idTA0007

mitre tactic nameDiscovery

mitre technique idT1614

mitre technique nameSystem_Location_Discovery

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