T1567.001_exfiltration-to-code-repository

T1567.001 Exfiltration to Code Repository

Sub-technique of: T1567

High-Level Description

Adversaries may exfiltrate data to a code repository rather than over their primary command and control channel. Code repositories are often accessible via an API (ex: https://api.github.com). Access to these APIs are often over HTTPS, which gives the adversary an additional level of protection.

Exfiltration to a code repository can also provide a significant amount of cover to the adversary if it is a popular service already used by hosts within the network.

Kill Chain Phase

• Exfiltration (TA0010)

Platforms: Linux, macOS, Windows, ESXi

What to Check

• Identify if Exfiltration to Code Repository technique is applicable to target environment
• Check Linux systems for indicators of Exfiltration to Code Repository
• Check macOS systems for indicators of Exfiltration to Code Repository
• Check Windows systems for indicators of Exfiltration to Code Repository
• Verify mitigations are bypassed or absent (1 known mitigations)
• Assess detection coverage (1 detection strategies)

How to Test

Manual Testing

1. Identify Attack Surface: Determine if the target environment is susceptible to Exfiltration to Code Repository by examining the target platforms (Linux, macOS, Windows).

2. Assess Existing Defenses: Review whether mitigations for T1567.001 are in place. If defenses are absent or misconfigured, this technique may be exploitable.

3. Execute Test: Use tools and methods described in the MITRE ATT&CK page and external references below.

Note: No Atomic Red Team tests available for this technique. See Atomic Red Team GitHub for updates.

Remediation Guide

M1021 Restrict Web-Based Content

Web proxies can be used to enforce an external network communication policy that prevents use of unauthorized external services.

Detection

Detection Strategy for Exfiltration to Code Repository

Risk Assessment

CWE Categories

References

• Atomic Red Team - T1567.001
• MITRE ATT&CK - T1567.001