set_beacon_block_dlls · Cobalt Strike MCP Server MCP

WHAT IT DOES

What set_beacon_block_dlls does on Cobalt Strike MCP Server

AI agents invoke set_beacon_block_dlls to trigger actions in Cobalt Strike MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why set_beacon_block_dlls needs a policy

This tool toggles a security control (DLL blocking) on a Cobalt Strike beacon, which is an active remote implant. Changing this setting affects the execution environment of the beacon, potentially allowing or preventing DLL injection/loading. It is an operational control action on a live red team implant, not a simple read or reversible write.

From the tool's definition 'Enable or disable block DLLs' - controls DLL blocking behavior on a beacon (remote implant), modifying runtime security posture of an active compromise

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_beacon_block_dlls Rate-limited

set_beacon_block_dlls stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_beacon_block_dlls": {
      "limits": [
        {
          "counter": "set_beacon_block_dlls_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Cobalt Strike MCP Server, so you can run agents against it safely.

FAQ

Questions about set_beacon_block_dlls

What does the set_beacon_block_dlls tool do? +

Enable or disable block DLLs. It is categorised as a Execute tool in the Cobalt Strike MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on set_beacon_block_dlls? +

Register the Cobalt Strike MCP Server MCP server in PolicyLayer and add a rule for set_beacon_block_dlls: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Cobalt Strike MCP Server. Nothing to install.

What risk level is set_beacon_block_dlls? +

set_beacon_block_dlls is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit set_beacon_block_dlls? +

Yes. Add a rate_limit block to the set_beacon_block_dlls rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block set_beacon_block_dlls completely? +

Set action: deny in the PolicyLayer policy for set_beacon_block_dlls. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides set_beacon_block_dlls? +

set_beacon_block_dlls is provided by the Cobalt Strike MCP Server MCP server (mickeydb/cobalt-strike-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.