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Non-Application Layer Protocol - T1095

(ATT&CK® Technique)
Definition

Adversaries may use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive. Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
D3FEND Inferred Relationships

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

     T1095["Non-Application Layer Protocol"] --> |produces| OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"]; class T1095 OffensiveTechniqueNode;
        class OutboundInternetNetworkTraffic ArtifactNode; click OutboundInternetNetworkTraffic href "/dao/artifact/d3f:OutboundInternetNetworkTraffic";
        click T1095 href "/offensive-technique/attack/T1095/"; click OutboundInternetNetworkTraffic href "/dao/artifact/d3f:OutboundInternetNetworkTraffic";             ProtocolMetadataAnomalyDetection["Protocol Metadata Anomaly Detection"] -->
          | analyzes | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          ProtocolMetadataAnomalyDetection["Protocol Metadata Anomaly Detection"] -.->
            | may-detect | T1095["Non-Application Layer Protocol"] ;
          class ProtocolMetadataAnomalyDetection DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click ProtocolMetadataAnomalyDetection href "/technique/d3f:ProtocolMetadataAnomalyDetection"; NetworkTrafficSignatureAnalysis["Network Traffic Signature Analysis"] -->
          | analyzes | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          NetworkTrafficSignatureAnalysis["Network Traffic Signature Analysis"] -.->
            | may-detect | T1095["Non-Application Layer Protocol"] ;
          class NetworkTrafficSignatureAnalysis DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click NetworkTrafficSignatureAnalysis href "/technique/d3f:NetworkTrafficSignatureAnalysis"; Client-serverPayloadProfiling["Client-server Payload Profiling"] -->
          | analyzes | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          Client-serverPayloadProfiling["Client-server Payload Profiling"] -.->
            | may-detect | T1095["Non-Application Layer Protocol"] ;
          class Client-serverPayloadProfiling DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click Client-serverPayloadProfiling href "/technique/d3f:Client-serverPayloadProfiling"; NetworkTrafficCommunityDeviation["Network Traffic Community Deviation"] -->
          | analyzes | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          NetworkTrafficCommunityDeviation["Network Traffic Community Deviation"] -.->
            | may-detect | T1095["Non-Application Layer Protocol"] ;
          class NetworkTrafficCommunityDeviation DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click NetworkTrafficCommunityDeviation href "/technique/d3f:NetworkTrafficCommunityDeviation"; PerHostDownload-UploadRatioAnalysis["Per Host Download-Upload Ratio Analysis"] -->
          | analyzes | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          PerHostDownload-UploadRatioAnalysis["Per Host Download-Upload Ratio Analysis"] -.->
            | may-detect | T1095["Non-Application Layer Protocol"] ;
          class PerHostDownload-UploadRatioAnalysis DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click PerHostDownload-UploadRatioAnalysis href "/technique/d3f:PerHostDownload-UploadRatioAnalysis";                                                          RelayPatternAnalysis["Relay Pattern Analysis"] -->
          | analyzes | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          RelayPatternAnalysis["Relay Pattern Analysis"] -.->
            | may-detect | T1095["Non-Application Layer Protocol"] ;
          class RelayPatternAnalysis DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click RelayPatternAnalysis href "/technique/d3f:RelayPatternAnalysis"; RemoteTerminalSessionDetection["Remote Terminal Session Detection"] -->
          | analyzes | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          RemoteTerminalSessionDetection["Remote Terminal Session Detection"] -.->
            | may-detect | T1095["Non-Application Layer Protocol"] ;
          class RemoteTerminalSessionDetection DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click RemoteTerminalSessionDetection href "/technique/d3f:RemoteTerminalSessionDetection";   NetworkTrafficFiltering["Network Traffic Filtering"] -->
          | filters | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          NetworkTrafficFiltering["Network Traffic Filtering"] -.->
            | may-isolate | T1095["Non-Application Layer Protocol"] ;
          class NetworkTrafficFiltering DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click NetworkTrafficFiltering href "/technique/d3f:NetworkTrafficFiltering";                                            UserGeolocationLogonPatternAnalysis["User Geolocation Logon Pattern Analysis"] -->
          | analyzes | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          UserGeolocationLogonPatternAnalysis["User Geolocation Logon Pattern Analysis"] -.->
            | may-detect | T1095["Non-Application Layer Protocol"] ;
          class UserGeolocationLogonPatternAnalysis DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click UserGeolocationLogonPatternAnalysis href "/technique/d3f:UserGeolocationLogonPatternAnalysis";                OutboundTrafficFiltering["Outbound Traffic Filtering"] -->
          | filters | OutboundInternetNetworkTraffic["Outbound Internet Network Traffic"];

          OutboundTrafficFiltering["Outbound Traffic Filtering"] -.->
            | may-isolate | T1095["Non-Application Layer Protocol"] ;
          class OutboundTrafficFiltering DefensiveTechniqueNode;
          class OutboundInternetNetworkTraffic ArtifactNode;
          click OutboundTrafficFiltering href "/technique/d3f:OutboundTrafficFiltering";
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