A user logged in at an unusual time via SSO

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Hour
Required Data	Requires one of the following data sources: AzureAD OR Azure SignIn Log OR Idira OR Duo OR Google Workspace Authentication OR Okta OR OneLogin OR PingOne
Detection Modules	Identity Analytics
ATT&CK Tactic	Stealth (TA0005)
ATT&CK Technique	Valid Accounts (T1078)
Severity	Informational

Description

A user connected via SSO on a day and hour that is unusual for this user. This may indicate that the account was compromised.

Attacker's Goals

An attacker is attempting to evade detection.

Investigative actions

• Check the login of the user.
• Check further actions done by the account (e.g. creating files in suspicious locations, creating users, elevating permissions, etc.).
• Check if the user accessing remote resources or connecting to other services.
• Check if the user is logging in from an unusual time zone while traveling.
• Check if the user usually logs in from this country.

Variations

Google Workspace - A user logged in at an unusual time via SSO

Synopsis

Field	Value
ATT&CK Tactic	Stealth (TA0005)
ATT&CK Technique	Valid Accounts (T1078)
Severity	Informational

Description

A user connected via SSO on a day and hour that is unusual for this user. This may indicate that the account was compromised.

Attacker's Goals

An attacker is attempting to evade detection.

Investigative actions

• Check the login of the user.
• Check further actions done by the account (e.g. creating files in suspicious locations, creating users, elevating permissions, etc.).
• Check if the user accessing remote resources or connecting to other services.
• Check if the user is logging in from an unusual time zone while traveling.
• Check if the user usually logs in from this country.