ET WEB_CLIENT Observed Zimbra zauthtoken Exfil Domain (zimbrauser .me in TLS SNI)
Sourceet/open
CreatedFebruary 1, 2024
UpdatedFebruary 1, 2024
Classificationcredential-theft
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET WEB_CLIENT Observed Zimbra zauthtoken Exfil Domain (zimbrauser .me in TLS SNI)"; flow:established,to_server; tls.sni; bsize:13; content:"zimbrauser.me"; fast_pattern; reference:url,twitter.com/__0XYC__/status/1753000391770317099; classtype:credential-theft; sid:2050660; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_02_01, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Web_Client_Attacks, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_01, reviewed_at 2024_05_06;)
References
Metadata
attack targetClient_Endpoint
created at2024_02_01
deploymentPerimeter
performance impactLow
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2024_02_01
reviewed at2024_05_06
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