wallet-monitor-snap

{"modified":"2026-08-06T12:17:50Z","published":"2026-08-06T12:14:59Z","schema_version":"1.7.4","id":"MAL-2026-13393","summary":"Malicious code in wallet-monitor-snap (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (5c50a0acdc6be5b64538f83b0c14c3808ea3a57b963233ba32a2d80c3e4cc2c3)\nwallet-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.\n","affected":[{"package":{"ecosystem":"npm","name":"wallet-monitor-snap"},"versions":["1.0.2","1.0.4"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"},{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"src/index.js","sha256":"e27d15a9f1165b52fed129239dd36c34260a2e16f1926118ec27bc815d9ab873","tlsh":"a94174eb66ee613c5c07a2217b5fa185bb70e1035a194c743d9d4bbc9f4d42c8136be8"}],"package_integrity":[{"filename":"wallet-monitor-snap-1.0.2.tgz","hashes":{"sha1":"e2da42db86e2bcc94ac2d3d4294c9eebdaaa09a6","sha512_sri":"sha512-KtPxr27uF74AkIIhO6zzGbKuzNt2c21n2TqOGUs5Tg0pE5P9/Ber6mBGDtcfagsO7ibQ+XAKlhuIB60k+cZPUA=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/wallet-monitor-snap/v/1.0.2"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/wallet-monitor-snap/v/1.0.4"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015993","import_time":"2026-08-06T12:16:03.109507887Z","modified_time":"2026-08-06T12:15:19Z","sha256":"5c50a0acdc6be5b64538f83b0c14c3808ea3a57b963233ba32a2d80c3e4cc2c3","source":"amazon-inspector","versions":["1.0.2"]},{"id":"IN-MAL-2026-015992","import_time":"2026-08-06T12:16:03.014188354Z","modified_time":"2026-08-06T12:14:59Z","sha256":"8d0ebf8c78988557de084376ed4793bc8ca67d468d1c350ee8242ee2bc7e054c","source":"amazon-inspector","versions":["1.0.4"]}]}}