Mythic Documentation
Version 3.3
Version 3.3
  • Mythic
  • Operators
  • Installation
    • Connecting
    • A note about containers
    • Offline Installation
    • Updating Mythic
  • Internal Documentation
  • Quick Usage
  • Operational Pieces
    • MITRE ATT&CK
    • Operations
    • Browser Scripts
    • Active Callbacks
    • Files
    • Search
    • File Browser
    • Socks Proxy
    • Credentials
    • Comments
    • Tags
    • Expanded Callbacks
    • Screenshots
    • Event Feed
    • Understanding Commands
      • Basic Information
      • Parameters
      • MITRE ATT&CK in Commands
    • Payload Types
      • Containers
    • C2 Profiles
      • C2 Server Utilities
      • Egress vs P2P
      • HTTP
      • dynamicHTTP
      • Save Parameters
    • API Tokens
  • Message Flow
    • Building Payloads
    • Agent Sends Message
    • File Upload Mythic->Agent
    • File Download Agent->Mythic
    • P2P Messages
    • Operator Submits Tasking
  • Database Schema
  • Reporting
    • Artifacts
    • MITRE ATT&CK
    • Reports
  • Scripting
  • Presentations / Webinars
  • Common Errors
  • MythicTips
  • Customizing
    • Customizing Public Agent
    • Hooking Features
      • Actions
      • Linking Agents
        • P2P Connections
      • Process Browser
      • Artifacts
      • Credentials
      • File Downloads (Agent -> Mythic)
      • File Uploads (Mythic -> Agent)
      • Screenshots
      • Add / Remove Commands
      • Keylog
      • File Browser
      • Tokens
      • Alerts
      • SOCKS
      • RPFWD
      • Interactive Tasking
      • Task Status
      • OnContainerStart
    • 1. Payload Type Development
      • 2. Payload Type Definition
        • Container Syncing
        • Turning a VM into a Container
      • 3. Adding Commands
        • Commands
      • 4. Create Tasking & Comms Format
        • Agent Messages
          • 1. Agent Message Format
          • 2. Checkin
          • 3. Get Tasking
          • 4. Submitting Responses
          • 5. SOCKS
          • 6. Reverse Port Forward
          • 7. Peer-to-peer messages
          • 8. Interactive Tasking
      • 5. MythicRPC
      • 6. Browser Scripting
      • 7. Dynamic Parameter Values
      • 8. Sub-tasking / Task Callbacks
      • 9. OPSEC Checking
      • 10. Translation Containers
      • 11. Process Response
      • 12 TypedArray Parse Function
      • 13. SOCKS
      • 14. Reverse PortFwd
      • 15. Interactive Tasking
    • 2. C2 Development
      • Docker & Server Config
        • 1. Docker Containers
        • 2. Configuration Files
        • 3. OPSEC Checks
        • 4. Configuration Checks
        • 5. Sample Message
        • 6. File Hosting
        • 7. Redirect Rules
        • 8. Get IOC
        • 9. Push C2
    • 3. Consuming Containers
      • Webhooks
      • Logging
      • Eventing
        • Operator Context (run_as)
        • Workflow Triggers
        • Steps
      • Auth
    • 4. Extending Agent Commands
    • Mythic UI Development
  • Common Questions and Answers
    • FAQ / Troubleshooting Tips
    • Change Log
    • Tip of the Week
  • Updating
    • Mythic 2.1 -> 2.2 Updates
      • Agents 2.1.* -> 2.2.8
        • MythicRPC
    • Mythic 2.2 -> 2.3 Updates
      • Agents 2.2 -> 2.3
    • Mythic 2.3 -> 3.0 Updates
      • Agents 2.3 -> 3.0
    • Mythic 3.2->3.3 Updates
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  1. Message Flow

File Download Agent->Mythic

PreviousFile Upload Mythic->AgentNextP2P Messages

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When you're downloading a file from the Agent to Mythic (such as a file on disk, a screenshot, or some large piece of memory that you want to track as a file), you have to indicate in some way that this data is specific to a file and not destined to be part of the information displayed to the user. The way this works is pretty much the inverse of what happens for uploads. Specifically, an agent has a file it wants to transfer, so it tells Mythic "i have data, i'm gonna send it as X chunks of size Y, can you give me a UUID so we can track this". Mythic tracks the data and gives back a UUID. Now the agent sends each chunk individually and Mythic can track it. This allows a single task to be able to send back multiple files concurrently or sequentially and still track it all.