Forge a Silver Ticket (forged TGS with service account hash). Creates a service ticket for a specific service. Requires: - Service account hash - Service SPN - Domain information Silver tickets grant access to a specific service without touching the DC.
AI agents invoke rubeus_silver to trigger actions in Rubeus 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.
This tool forges Kerberos service tickets using a stolen service account hash, enabling unauthorized access to services while bypassing domain controller detection. This is an offensive security/credential abuse operation that constitutes unauthorized privilege escalation and lateral movement.
From the tool's definition Forge a Silver Ticket (forged TGS with service account hash). Silver tickets grant access to a specific service without touching the DC.
Attacks that exploit this kind of access
Forge a Silver Ticket (forged TGS with service account hash). Creates a service ticket for a specific service. Requires: - Service account hash - Service SPN - Domain information Silver tickets grant access to a specific service without touching the DC. It is categorised as a Execute tool in the Rubeus MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Rubeus MCP Server MCP server in PolicyLayer and add a rule for rubeus_silver: 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 Rubeus MCP Server. Nothing to install.
rubeus_silver 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 rubeus_silver 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 rubeus_silver. 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.
rubeus_silver is provided by the Rubeus MCP Server MCP server (schwarztim/sec-rubeus-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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