kevmap

TechniquesT1654 › AN0706

AN0706 Analytic 0706

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

<p>Monitor for suspicious use of commands such as cat, less, grep, or journalctl accessing /var/log/ files. Abnormal enumeration of authentication logs (auth.log, secure) or bulk access to multiple logs in short time windows should be flagged.</p>
Detects
T1654 Log Enumeration
Part of
DET0255 Detection Strategy for Log Enumeration

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
auditd:SYSCALLexecve: Execution of cat, less, grep, journalctl targeting log directories (/var/log/)DC0064 Command Execution
auditd:PATHopen: Access to sensitive log files (/var/log/auth.log, /var/log/secure, /var/log/syslog)DC0055 File Access

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
AdminMaintenanceScriptsFilter routine scripts used for log rotation or troubleshooting.