Determine the TLS cipher suite used in a 3-Way SSL handshake

When using Microsoft Network Monitor 3.4 you can determine the cipher suite used in a 3-Way SSL handshake by inspecting the “Server Hello” frame. Specifically drill down to “TLSCipherSuites” section.

Filter that shows you a 3-Way SSL Handhsake

TLS.TlsRecLayer.TlsRecordLayer.SSLHandshake.HandShake.HandShakeType

You can also use Microsoft Network Monitor to filter for specific ciphers:

List of TLS Ciphers that can be used in the below filter
https://testssl.sh/openssl-iana.mapping.html

Cipher Filters:

//Filter to find TLS Client Hello’s which are offering ECDHE_RSA_WITH_AES_256_CBC_SHA as an available cipher
TLS.TlsRecLayer.TlsRecordLayer.SSLHandshake.HandShake.ClientHello.TLSCipherSuites.Cipher == 0xc014

//Filter to find TLS Client Hello’s which are offering ECDHE_RSA_WITH_AES_128_CBC_SHA as an available cipher
TLS.TlsRecLayer.TlsRecordLayer.SSLHandshake.HandShake.ClientHello.TLSCipherSuites.Cipher == 0xc013

//Filter to find TLS Client Hello’s which are offering ECDHE_ECDSA_WITH_AES_256_CBC_SHA as an available cipher
TLS.TlsRecLayer.TlsRecordLayer.SSLHandshake.HandShake.ClientHello.TLSCipherSuites.Cipher == 0xc0A

//Filter to find TLS Client Hello’s which are offering ECDHE_ECDSA_WITH_AES_256_CBC_SHA as an available cipher
TLS.TlsRecLayer.TlsRecordLayer.SSLHandshake.HandShake.ClientHello.TLSCipherSuites.Cipher == 0xc09
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