Scan memory with YARA rules to detect malware signatures.
AI agents invoke scan_with_yara to trigger actions in Volatility3 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 executes a YARA scanning engine against memory content. It is not a simple read/query — it runs an active detection process (Execute category). Severity is high because misuse could involve running malicious or overly broad YARA rules against sensitive memory dumps containing credentials, keys, and private data.
From the tool's definition 'Scan memory with YARA rules to detect malware signatures' — actively runs YARA rule engine against memory dumps, triggering external scan operations whose effects depend on the rules and memory provided
Documented attack patterns abuse exactly the kind of access scan_with_yara gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Volatility3 MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for scan_with_yara:
{
"version": "1",
"default": "deny",
"tools": {
"scan_with_yara": {
"limits": [
{
"counter": "scan_with_yara_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}scan_with_yara 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.
Scan memory with YARA rules to detect malware signatures. It is categorised as a Execute tool in the Volatility3 MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Volatility3 MCP Server MCP server in PolicyLayer and add a rule for scan_with_yara: 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 Volatility3 MCP Server. Nothing to install.
scan_with_yara 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 scan_with_yara 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 scan_with_yara. 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.
scan_with_yara is provided by the Volatility3 MCP Server MCP server (kirandawadi/volatility3-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Volatility3 MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
9 Volatility3 MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.