Possible Impossible Travel Pattern - SSO

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	1 Hour
Deduplication Period	1 Day
Required Data	Requires one of the following data sources: AzureAD OR Azure SignIn Log OR Idira OR Duo OR Okta OR OneLogin OR PingOne
Detection Modules	Identity Analytics
ATT&CK Tactic	Initial Access (TA0001), Resource Development (TA0042)
ATT&CK Technique	Compromise Accounts (T1586), Valid Accounts (T1078)
Severity	Informational

Description

A user logged in from several countries in a short period, including at least one location that is rare for the user or organization. This suspicious activity may be a sign of credential theft.

Attacker's Goals

An attacker who compromises user credentials will leverage those credentials to gain initial access to the corporate network. To obfuscate their true origin, adversaries commonly route traffic through proxies or VPNs across multiple geographic locations.

Investigative actions

• Review the source IPs and AS organizations. Check if they are associated with known corporate VPNs, cloud hosting providers, or personal VPN services.
• Examine recent activity associated with the user in the relevant SSO provider, focusing on suspicious actions such as MFA changes or unusual data access.

Variations

Azure First-Seen Device - Impossible Traveler

Synopsis

Field	Value
ATT&CK Tactic	Initial Access (TA0001), Resource Development (TA0042)
ATT&CK Technique	Compromise Accounts (T1586), Valid Accounts (T1078)
Severity	Low

Description

A user logged in from several countries in a short period, including at least one location that is rare for the user or organization. This suspicious activity may be a sign of credential theft.

Attacker's Goals

An attacker who compromises user credentials will leverage those credentials to gain initial access to the corporate network. To obfuscate their true origin, adversaries commonly route traffic through proxies or VPNs across multiple geographic locations.

Investigative actions

• Review the source IPs and AS organizations. Check if they are associated with known corporate VPNs, cloud hosting providers, or personal VPN services.
• Examine recent activity associated with the user in the relevant SSO provider, focusing on suspicious actions such as MFA changes or unusual data access.

Rare Country Login - Impossible Traveler (SSO)

Synopsis

Field	Value
ATT&CK Tactic	Initial Access (TA0001), Resource Development (TA0042)
ATT&CK Technique	Compromise Accounts (T1586), Valid Accounts (T1078)
Severity	Low

Description

A user logged in from several countries in a short period, including at least one location that is rare for the user or organization. This suspicious activity may be a sign of credential theft.

Attacker's Goals

An attacker who compromises user credentials will leverage those credentials to gain initial access to the corporate network. To obfuscate their true origin, adversaries commonly route traffic through proxies or VPNs across multiple geographic locations.

Investigative actions

• Review the source IPs and AS organizations. Check if they are associated with known corporate VPNs, cloud hosting providers, or personal VPN services.
• Examine recent activity associated with the user in the relevant SSO provider, focusing on suspicious actions such as MFA changes or unusual data access.