ET PHISHING Observed DeviceCode Phishing Domain (ms365-team .com in TLS SNI)
Sourceet/open
CreatedApril 27, 2026
UpdatedApril 27, 2026
Classificationsocial-engineering
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Observed DeviceCode Phishing Domain (ms365-team .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".ms365-team.com"; endswith; fast_pattern; classtype:social-engineering; sid:2069010; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_04_27, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_04_27;)
Metadata
attack targetClient_Endpoint
created at2026_04_27
deploymentPerimeter
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_04_27
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