Runs the hacker tool mimikatz with the provided arguments, returing Mimikatz output.
AI agents invoke execute_mimikatz to trigger actions in Mythic MCP. 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.
Mimikatz is a powerful offensive security tool primarily used to extract credentials, manage access tokens, and perform advanced post-exploitation activities on Windows systems.
From the tool's definition Tool description states it 'Runs the hacker tool mimikatz with the provided arguments' – this is direct execution of a well-known credential harvesting and post-exploitation tool. The tool accepts arguments and returns output from the executed tool.
Documented attack patterns abuse exactly the kind of access execute_mimikatz gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mythic MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for execute_mimikatz:
{
"version": "1",
"default": "deny",
"tools": {
"execute_mimikatz": {
"limits": [
{
"counter": "execute_mimikatz_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}execute_mimikatz 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.
Free to start. No card required.
Runs the hacker tool mimikatz with the provided arguments, returing Mimikatz output. It is categorised as a Execute tool in the Mythic MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Mythic MCP server in PolicyLayer and add a rule for execute_mimikatz: 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 Mythic MCP. Nothing to install.
execute_mimikatz is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the execute_mimikatz 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.
Set action: deny in the PolicyLayer policy for execute_mimikatz. 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.
execute_mimikatz is provided by the Mythic MCP server (xpn/mythic_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 Mythic MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
6 Mythic MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.