Use of software with malware In wallet-monitor-snap
Description
wallet-monitor-snap is a MetaMask Snap whose onRpcRequest handler implements a 'showSecurityAlert' method that opens a snap_dialog inside MetaMask's trusted UI, tells the user their account has 'unusual activity', and prompts them to enter their Secret Recovery Phrase. The typed BIP-39 mnemonic is returned to the invoking dapp as { captured: result }. The snap declares endowment:rpc with dapps: true, so any web origin that can reach the snap can invoke this method and receive the seed phrase. In-source comments explicitly frame the package's advertised 'ping' and 'estimateGas' RPC methods as a cover story: 'Benign ping method so the snap appears legitimate during store review' and 'Gas estimation facade (the "legitimate" cover feature)'. Any HD wallet account derived from the phrase becomes fully controllable by the caller.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Component | Affected version |
|---|---|---|
 npm |
Aliases