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T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol Mappings

Adversaries may steal data by exfiltrating it over a symmetrically encrypted network protocol other than that of the existing command and control channel. The data may also be sent to an alternate network location from the main command and control server.

Symmetric encryption algorithms are those that use shared or the same keys/secrets on each end of the channel. This requires an exchange or pre-arranged agreement/possession of the value used to encrypt and decrypt data.

Network protocols that use asymmetric encryption often utilize symmetric encryption once keys are exchanged, but adversaries may opt to manually share keys and implement symmetric cryptographic algorithms (ex: RC4, AES) vice using mechanisms that are baked into a protocol. This may result in multiple layers of encryption (in protocols that are natively encrypted such as HTTPS) or encryption in protocols that not typically encrypted (such as HTTP or FTP).

View in MITRE ATT&CK®

Mappings

Capability ID Capability Description Mapping Type ATT&CK ID ATT&CK Name Notes
AC-3 Access Enforcement Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
AC-4 Information Flow Enforcement Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
CA-7 Continuous Monitoring Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
CM-2 Baseline Configuration Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
CM-6 Configuration Settings Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
CM-7 Least Functionality Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
SC-46 Cross Domain Policy Enforcement Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
SC-7 Boundary Protection Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
SI-10 Information Input Validation Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
SI-15 Information Output Filtering Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
SI-3 Malicious Code Protection Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
SI-4 System Monitoring Protects T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
alerts_for_windows_machines Alerts for Windows Machines technique_scores T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
Comments
This control may detect suspicious use of the Telegram tool for transferring malicious binaries across hosts. The following alerts may be generated: "Detected potentially suspicious use of Telegram tool".
References
    network_security_groups Network Security Groups technique_scores T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
    Comments
    This control can reduce the protocols available for data exfiltration. Temporal immediate, coverage substantial.
    References
      azure_firewall Azure Firewall technique_scores T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
      Comments
      This control's threat intelligence-based filtering feature can be enabled to alert and deny traffic from/to known malicious IP addresses and domains. The IP addresses and domains are sourced from the Microsoft Threat Intelligence feed. Because this protection is limited to known malicious IP addresses and domains and does not provide protection from such attacks from unknown domains and IP addresses, this is scored as partial coverage resulting in an overall Partial score.
      References
        azure_network_traffic_analytics Azure Network Traffic Analytics technique_scores T1048.001 Exfiltration Over Symmetric Encrypted Non-C2 Protocol
        Comments
        This control can identify anomalous traffic with respect specific ports (though it can't identify presence or lack of encryption).
        References