registry / Credential exfiltration / @servicetitan/va-mfe-loader
@servicetitan/va-mfe-loader
This report shows the evidence for @servicetitan/va-mfe-loader@1.1.4. 7 of 8 known versions are blocked or flagged. The newest version, 1.2.0, is allowed. See all versions.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis is concrete install-time execution of an obfuscated credential-harvesting and network-exfiltration payload. The harmless runtime loader is distinct from the preinstall chain.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
npm install (preinstall)
Impact
Theft of GitHub tokens and other discovered credentials during installation.
Mechanism
downloaded runtime executes obfuscated credential exfiltration code
Attack narrative
The preinstall hook invokes setup.mjs, which downloads a platform-specific Bun executable from GitHub if Bun is unavailable and uses it to run math_init.js. That large obfuscated script executes immediately, discovers credential sources, handles GitHub token categories, and sends data through network request handlers. This behavior is unrelated to the published React loader.
AI rationale
This is concrete install-time execution of an obfuscated credential-harvesting and network-exfiltration payload. The harmless runtime loader is distinct from the preinstall chain.
Evidence
package.jsonsetup.mjsmath_init.jsdist/va-mfe-loader.js
Network endpoints1
github.com/oven-sh/bun/releases/download/bun-v1.3.13/
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- package.json runs `node setup.mjs` as preinstall.
- setup.mjs downloads Bun from github.com and executes `math_init.js`.
- math_init.js is a 728KB obfuscated payload with immediate `jsTXVr()` execution.
- math_init.js enumerates credential sources and processes `ghtoken`, `ghs_old`, and `ghs_jwt`.
- math_init.js builds network requests and uploads collected material through handler classes.
Evidence against
- dist/va-mfe-loader.js is a small React loader with no matching malicious behavior.
- The benign dist entrypoint does not mitigate the separately invoked preinstall payload.
Behavioral surface
ChildProcessEvalFilesystemNetworkShell
HighEntropyStringsMinifiedUrlStrings
NoLicense
Source & flagged code
5 flagged · loading sourcepackage.jsonView file
•scripts.preinstall = node setup.mjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgmath_init.jsView file
1// @bun @bun-cjs
L2: var MmgoCP,etDiOOB,JqTtnbZ,bc3Kak,ZQmUTyQ,TTUgga,MDX6yrw,h8wMJNB,CabwE2L,x5ErqV;function WV8StW(MmgoCP,etDiOOB,JqTtnbZ){for(JqTtnbZ=0x0;JqTtnbZ<etDiOOB;JqTtnbZ++)MmgoCP.push(MmgoCP...
Low
Eval
Package source references a known benign dynamic code generation pattern.
math_init.jsView on unpkg · L1setup.mjsView file
1Manifest entrypoint (scripts.preinstall) carries capability families absent from dist/build output: execution+network
L1: #!/usr/bin/env node
L2: import { execFileSync } from "child_process";
L3: import _0x488df8 from "fs";
L4: import _0x52943e from "https";
L5: import _0x24db8d from "os";
...
L50: function ra() {
L51: const _0x51cd53 = process.platform + "-" + process.arch;
L52: const _0x3ab5c4 = PM[_0x51cd53];
...
L218: } else if (_0xc0d7d2 === 8) {
L219: _0x27994e = _0x548d91.inflateRawSync(_0x5975df);
L220: } else {
Findings
4 High2 Medium6 Low
HighInstall Time Lifecycle Scriptspackage.json
HighEntrypoint Build Divergencesetup.mjs
HighKnown Malware Source Similaritysetup.mjs
HighKnown Malware Source Fingerprint Signaturesetup.mjs
MediumNetwork
MediumStructural Risk Force Deep Review
LowScripts Present
LowEvalmath_init.js
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowNo License
Affected versions and remediation
This report applies to @servicetitan/va-mfe-loader@1.1.4.
The versions list below shows the verdict for each recorded version.
- Avoid installing @servicetitan/va-mfe-loader@1.1.4. 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.