T0891_hardcoded-credentials
DevOps & SecurityAdversaries may leverage credentials that are hardcoded in software or firmware to gain an unauthorized interactive user session to an asset.
How to use this skill
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T0891 Hardcoded Credentials
High-Level Description
Adversaries may leverage credentials that are hardcoded in software or firmware to gain an unauthorized interactive user session to an asset. Examples credentials that may be hardcoded in an asset include:
- Username/Passwords
- Cryptographic keys/Certificates
- API tokens
Unlike Default Credentials, these credentials are built into the system in a way that they either cannot be changed by the asset owner, or may be infeasible to change because of the impact it would cause to the control system operation. These credentials may be reused across whole product lines or device models and are often not published or known to the owner and operators of the asset.
Adversaries may utilize these hardcoded credentials to move throughout the control system environment or provide reliable access for their tools to interact with industrial assets.
Kill Chain Phase
- Lateral Movement (TA0109)
- Persistence (TA0110)
Platforms: ICS
What to Check
- Identify if Hardcoded Credentials technique is applicable to target ICS environment
- Check ICS/SCADA systems for indicators of Hardcoded Credentials
- Verify mitigations are bypassed or absent (1 known mitigations)
- Assess detection coverage (1 detection strategies)
How to Test
Identify Attack Surface
Determine if the target ICS/SCADA environment is susceptible to Hardcoded Credentials by examining operational technology systems and network architecture.
Assess Existing Defenses
Review whether mitigations for T0891 are in place. If defenses are absent or misconfigured, this technique may be exploitable in the ICS environment.
Remediation Guide
M0801 Access Management
Ensure embedded controls and network devices are protected through access management, as these devices often have unknown hardcoded accounts which could be used to gain unauthorized access.
Detection
Detection of Hardcoded Credentials
Risk Assessment
| Finding | Severity | Impact |
|---|---|---|
| Hardcoded Credentials technique applicable | High | Lateral Movement |
CWE Categories
| CWE ID | Title |
|---|---|
| CWE-284 | Improper Access Control |