Local user enumeration via SAMR

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	XDR Agent with eXtended Threat Hunting (XTH)
ATT&CK Tactic	Discovery (TA0007)
ATT&CK Technique	Account Discovery: Local Account (T1087.001)
Severity	Informational

Description

A user enumerated local users via SAMR.

Attacker's Goals

An adversary may leverage local user discovery to identify privileged users and escalate privileges.

Investigative actions

• Determine the user, hostname, and process that performed the user enumeration.
• Inspect process, command-line arguments or scripts used.
• Check for any privilege escalation or lateral movement attempts from the source system.
• Check if the tool used to enumerate the local users is a known or an approved tool.
• Review the logs for suspicious activity from the same host or user.

Variations

Local user enumeration via SAMR on an internet facing server

Synopsis

Field	Value
ATT&CK Tactic	Discovery (TA0007)
ATT&CK Technique	Account Discovery: Local Account (T1087.001)
Severity	Low

Description

A user enumerated local users via SAMR.

Attacker's Goals

An adversary may leverage local user discovery to identify privileged users and escalate privileges.

Investigative actions

• Determine the user, hostname, and process that performed the user enumeration.
• Inspect process, command-line arguments or scripts used.
• Check for any privilege escalation or lateral movement attempts from the source system.
• Check if the tool used to enumerate the local users is a known or an approved tool.
• Review the logs for suspicious activity from the same host or user.