ET INFO Outbound SMB2 NTLM Auth Attempt to External Address
Sourceet/open
CreatedFebruary 27, 2024
UpdatedFebruary 27, 2024
Classificationmisc-activity
alert smb $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Outbound SMB2 NTLM Auth Attempt to External Address"; flow:established,to_server; content:"|fe|SMB"; content:"NTLMSSP|00 03 00 00 00|"; within:200; fast_pattern; classtype:misc-activity; sid:2051116; rev:1; metadata:attack_target Client_and_Server, created_at 2024_02_27, deployment Perimeter, performance_impact Significant, confidence High, signature_severity Minor, updated_at 2024_02_27; target:src_ip;)
Metadata
attack targetClient_and_Server
created at2024_02_27
deploymentPerimeter
performance impactSignificant
confidenceHigh
signature severityMinor
updated at2024_02_27
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