registry / Install hook abuse / cacao1
cacao1
This report shows the evidence for cacao1@9.9.9, the only known version.
AI Security Review
scanned 2mo ago · by lpm-firewall-aiSource inspection confirms unconsented install-time transmission of the host name to an external collection endpoint. The automatic hooks and self-dependency increase the supply-chain risk.
Static reason
One or more suspicious static signals were detected.; source fingerprint signature matched known malicious package; routed for review
Trigger
npm installation, including dependency installation, triggers preinstall and postinstall.
Impact
It leaks an installation-environment identifier without a user action and can track affected hosts.
Mechanism
Install-time hostname exfiltration over HTTPS.
Attack narrative
The package configures npm preinstall and postinstall hooks to run index.js. The script obtains the host name and includes it in a request to a Pipedream-controlled URL. This occurs automatically during installation. A self-dependency on cacao1 also creates unnecessary lifecycle supply-chain risk.
AI rationale
Source inspection confirms unconsented install-time transmission of the host name to an external collection endpoint. The automatic hooks and self-dependency increase the supply-chain risk.
Evidence
package.jsonindex.js
Network endpoints1
eo8f3m3ho26a0nm.m.pipedream.net
Decision evidence
public snapshotAI called this Malicious at 98.0% confidence as Malware with low false-positive risk.
Evidence for block
- Both preinstall and postinstall automatically run index.js during npm installation.
- The lifecycle code sends the installing machine's hostname to an external Pipedream endpoint.
- The package declares a runtime dependency on its own package name and compatible release range.
Evidence against
- The inspected source does not show file reads, credential harvesting, or destructive writes.
- The source is short and does not contain an additional downloaded payload or shell execution.
Behavioral surface
Filesystem
TrivialUrlStrings
Source & flagged code
4 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node index.js --save-prod
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.preinstall = node index.js --save-prod
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkg•scripts.postinstall = node index.js --save-prod
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgindex.jsView file
•matchType = malicious_source_fingerprint_signature
signature = ab380c01ab85e2a4
signatureType = suspicious_hashes
sourceLabel = Datadog
matchedPackage = buildkite-pipelines@9.9.9
matchedPath = index.js
matchedIdentity = npm:YnVpbGRraXRlLXBpcGVsaW5lcw:9.9.9
similarity = 1.000
shingleOverlap = 1
summary = Datadog malicious npm corpus sample: samples/npm/malicious_intent/buildkite-pipelines/9.9.9/2025-09-24-buildkite-pipelines-v9.9.9.zip
Findings
2 High2 Medium3 Low
HighInstall Time Lifecycle Scriptspackage.json
HighKnown Malware Source Fingerprint Signatureindex.js
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumAmbiguous Install Lifecycle Scriptpackage.json
LowScripts Present
LowFilesystem
LowUrl Strings
Affected versions and remediation
This report applies to cacao1@9.9.9.
The versions list below shows the verdict for each recorded version.
- Avoid installing cacao1@9.9.9. 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.