System Network Connections Discovery - T1049

(ATT&CK® Technique)

Definition

Adversaries may attempt to get a listing of network connections to or from the compromised system they are currently accessing or from remote systems by querying for information over the network.

D3FEND Inferred Relationships

Browse the D3FEND knowledge graph by clicking on the nodes below.

        graph LR;

     T1049["System Network Connections Discovery"] --> |may-invoke| GetOpenSockets["Get Open Sockets"]; class T1049 OffensiveTechniqueNode;
        class GetOpenSockets ArtifactNode; click GetOpenSockets href "/dao/artifact/d3f:GetOpenSockets";
        click T1049 href "/offensive-technique/attack/T1049/"; click GetOpenSockets href "/dao/artifact/d3f:GetOpenSockets";             SystemCallAnalysis["System Call Analysis"] -->
          | analyzes | GetOpenSockets["Get Open Sockets"];

          SystemCallAnalysis["System Call Analysis"] -.->
            | may-detect | T1049["System Network Connections Discovery"] ;
          class SystemCallAnalysis DefensiveTechniqueNode;
          class GetOpenSockets ArtifactNode;
          click SystemCallAnalysis href "/technique/d3f:SystemCallAnalysis"; SystemCallFiltering["System Call Filtering"] -->
          | filters | GetOpenSockets["Get Open Sockets"];

          SystemCallFiltering["System Call Filtering"] -.->
            | may-isolate | T1049["System Network Connections Discovery"] ;
          class SystemCallFiltering DefensiveTechniqueNode;
          class GetOpenSockets ArtifactNode;
          click SystemCallFiltering href "/technique/d3f:SystemCallFiltering";

json

Use of the MITRE D3FEND™ Knowledge Graph and website is subject to the Terms of Use. Use of the MITRE D3FEND website is subject to the MITRE D3FEND Privacy Policy. MITRE D3FEND is funded by the National Security Agency (NSA) Cybersecurity Directorate and managed by the National Security Engineering Center (NSEC) which is operated by The MITRE Corporation. MITRE D3FEND; and the MITRE D3FEND logo are trademarks of The MITRE Corporation. MITRE ATT&CK® and ATT&CK® are registered trademarks of The MITRE Corporation. MITRE ATT&CK content is subject to the MITRE ATT&CK terms of use. This software was produced for the U. S. Government under Basic Contract No. W56KGU-18-D-0004, and is subject to the Rights in Noncommercial Computer Software and Noncommercial Computer Software Documentation Clause 252.227-7014 (FEB 2012)
© 2025 The MITRE Corporation.
Approved for Public Release; Distribution Unlimited #20-2338 and #23-1207.