Adversaries may directly collect unsecured credentials stored or passed through user communication services. Credentials may be sent and stored in user chat communication applications such as email, chat services like Slack or Teams, collaboration tools like Jira or Trello, and any other services that support user communication. Users may share various forms of credentials (such as usernames and passwords, API keys, or authentication tokens) on private or public corporate internal communications channels.
Rather than accessing the stored chat logs (i.e., Credentials In Files), adversaries may directly access credentials within these services on the user endpoint, through servers hosting the services, or through administrator portals for cloud hosted services. Adversaries may also compromise integration tools like Slack Workflows to automatically search through messages to extract user credentials. These credentials may then be abused to perform follow-on activities such as lateral movement or privilege escalation (Citation: Slack Security Risks).
View in MITRE ATT&CK®| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| SI-04 | System Monitoring | Protects | T1552.008 | Chat Messages | |
| AC-04 | Information Flow Enforcement | Protects | T1552.008 | Chat Messages | |
| PUR-IP-E5 | Information Protection | Technique Scores | T1552.008 | Chat Messages |
Comments
Defender for Cloud Apps file policies allow you to enforce a wide range of automated processes. Policies can be set to provide Information Protection, including continuous compliance scans, legal eDiscovery tasks, and DLP for sensitive content shared publicly.
Information Protection Detects Chat message attacks due to it encrypting files containing personally identifying information and other sensitive data that is shared in a cloud app and applying sensitivity labels to limit access only to employees in your company.
License Requirements:
Microsoft Defender for Office 365 plan 1 and plan 2
References
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| PUR-AS-E5 | Audit Solutions | Technique Scores | T1552.008 | Chat Messages |
Comments
Microsoft Purview auditing solutions provide an integrated solution to help organizations effectively respond to security events, forensic investigations, internal investigations, and compliance obligations. Thousands of user and admin operations performed in dozens of Microsoft 365 services and solutions are captured, recorded, and retained in your organization's unified audit log. Audit records for these events are searchable by security ops, IT admins, insider risk teams, and compliance and legal investigators in your organization. This capability provides visibility into the activities performed across your Microsoft 365 organization.
Microsoft's Audit Solutions protects from Chat Messages attacks due to Audit Solutions providing the visibility to allow admins to preemptively search through communication services to find shared unsecured credentials.
License Requirements:
Microsoft 365 E3 and E5
References
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| DEF-IR-E5 | Incident Response | Technique Scores | T1552.008 | Chat Messages |
Comments
An incident in Microsoft Defender XDR is a collection of correlated alerts and associated data that make up the story of an attack. Microsoft 365 services and apps create alerts when they detect a suspicious or malicious event or activity. Individual alerts provide valuable clues about a completed or ongoing attack. Attacks typically employ various techniques against different types of entities, such as devices, users, and mailboxes. The result of this is multiple alerts for multiple entities in your tenant. Piecing the individual alerts together to gain insight into an attack can be challenging and time-consuming, Microsoft Defender XDR automatically aggregates the alerts and their associated information into an incident. A typical Incident Response workflow in Microsoft Defender XDR begins with a triage action, next is the investigate action, and finally is the response action.
Microsoft 365 Defender Incident Response responds to chat messages attacks due to Incident Response monitoring application logs for activity that may highlight malicious attempts to access application data.
License Requirements:
Microsoft Defender XDR
References
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