babyyodaa@1.1.0
Hello World NPM example
AI Security Review
scanned 13h ago · by lpm-firewall-aiThe package automatically runs a script during installation that attempts to expose an interactive shell to a hard-coded external host. This is concrete malicious behavior unrelated to the package’s stated greeting-library purpose.
Static reason
One or more suspicious static signals were detected.
Trigger
The npm preinstall lifecycle hook runs during installation.
Impact
A successful connection gives the remote endpoint interactive shell access to the installing machine.
Mechanism
The hook executes rce.sh, which includes interactive shell commands connecting to 202.164.16.13 on port 443.
Attack narrative
During installation, the preinstall hook runs rce.sh. The script attempts several interactive reverse-shell connections to 202.164.16.13:443, which could give the remote endpoint shell access if a connection succeeds.
AI rationale
The package automatically runs a script during installation that attempts to expose an interactive shell to a hard-coded external host. This is concrete malicious behavior unrelated to the package’s stated greeting-library purpose.
Evidence
package.jsonrce.sh/tmp/f
Network endpoints1
202.164.16.13:443
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- The preinstall hook makes rce.sh executable and runs it automatically.
- rce.sh contains interactive reverse-shell commands connecting to 202.164.16.13:443.
- The library entry point exports a greeting function.
Evidence against
- The package’s library entry point only returns greeting strings.
Behavioral surface
Source & flagged code
6 flaggedpackage.jsonView file
•scripts.preinstall = chmod +x rce.sh; ./rce.sh
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg35"preinstall": "chmod +x rce.sh; ./rce.sh",
"test": "echo \"Error: no test specified\" && exit 1"
},
"version": "1.1.0"
}
High
Suspicious Lifecycle Evidence
The preinstall hook makes rce.sh executable and runs it automatically.
package.jsonView on unpkg · L35•scripts.preinstall = chmod +x rce.sh; ./rce.sh
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkginit.shView file
Findings
4 High2 Medium1 Low
HighInstall Time Lifecycle Scriptspackage.json
HighSuspicious Lifecycle Evidencepackage.json
HighAi Review Evidencerce.sh
HighAi Review Evidencelib/index.js
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumShips Build Helperinit.sh
LowScripts Present
Affected versions and remediation
This report applies to babyyodaa@1.1.0.
See all versions of babyyodaa for other recorded verdicts.
- Avoid installing babyyodaa@1.1.0. 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: .
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