kevmap

TechniquesT1684.001 › AN0794

AN0794 Analytic 0794

macOS · attack.mitre.org · ATT&CK Enterprise v19.2

<p>Monitor Mail.app activity or unified logs for anomalous SMTP usage, including mismatches between display name and authenticated AppleID or Exchange credentials. Detect use of third-party mail utilities that attempt to send on behalf of corporate identities.</p>
Detects
T1684.001 Impersonation
Part of
DET0286 Detection Strategy for Impersonation

Log sources and channels

Exactly as MITRE states them in x_mitre_log_source_references. Where a channel is vague, it is vague in the source; kevmap does not tidy it.

Log sourceChannelData component
macos:unifiedlogMail.app or third-party clients sending messages with mismatched From headersDC0038 Application Log Content

Mutable elements

Parameters MITRE marks as environment-specific. These are the knobs you are expected to tune; they are why an analytic is not a rule.

FieldDescription
TrustedMailClientsAllowlist known third-party clients used for legitimate email activity.