T1621: Multi-Factor Authentication Request Generation
| View on MITRE ATT&CK | T1621 |
|---|---|
| Tactic(s) | Credential Access |
Data from MITRE ATT&CK®:
Adversaries may attempt to bypass multi-factor authentication (MFA) mechanisms and gain access to accounts by generating MFA requests sent to users.
Adversaries in possession of credentials to Valid Accounts may be unable to complete the login process if they lack access to the 2FA or MFA mechanisms required as an additional credential and security control. To circumvent this, adversaries may abuse the automatic generation of push notifications to MFA services such as Duo Push, Microsoft Authenticator, Okta, or similar services to have the user grant access to their account.
In some cases, adversaries may continuously repeat login attempts in order to bombard users with MFA push notifications, SMS messages, and phone calls, potentially resulting in the user finally accepting the authentication request in response to “MFA fatigue.”(Citation: Russian 2FA Push Annoyance - Cimpanu)(Citation: MFA Fatigue Attacks - PortSwigger)(Citation: Suspected Russian Activity Targeting Government and Business Entities Around the Globe)
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Cyber Threat Graph Context
Explore how this ATT&CK Technique relates to the wider threat graph
Reporting on this Technique
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Mitigations for this technique
MITRE ATT&CK Mitigations
User Training
Train users to be aware of access or manipulation attempts by an adversary to reduce the risk of successful spearphishing, social engineering, and other techniques that involve user interaction.Account Use Policies
Configure features related to account use like login attempt lockouts, specific login times, etc.Multi-factor Authentication
Use two or more pieces of evidence to authenticate to a system; such as username and password in addition to a token from a physical smart card or token generator.How to detect this technique
MITRE ATT&CK Data Components
User Account Authentication (User Account)
An attempt by a user to gain access to a network or computing resource, often by providing credentials (ex: Windows EID 4776 or /var/log/auth.log)Logon Session Creation (Logon Session)
Initial construction of a successful new user logon following an authentication attempt. (e.g. Windows EID 4624, /var/log/utmp, or /var/log/wmtp)Logon Session Metadata (Logon Session)
Contextual data about a logon session, such as username, logon type, access tokens (security context, user SIDs, logon identifiers, and logon SID), and any activity associated within itApplication Log Content (Application Log)
Logging, messaging, and other artifacts provided by third-party services (ex: metrics, errors, and/or alerts from mail/web applications)Sigma Detections for this Technique
SP800-53 Controls
See which controls can help protect against this MITRE ATT&CK technique. This is based on mappings to associated SP800-53 controls produced by the MITRE Engenuity Center for Threat-Informed Defense.