registry / Credential exfiltration / @servicetitan/ko-bridge
@servicetitan/ko-bridge
Collection of components and utils to connect Knockout and React codebase
This report shows the evidence for @servicetitan/ko-bridge@38.1.4. 7 of 22 known versions are blocked or flagged. The newest version, 40.2.2, is allowed. See all versions.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis is an unconsented install-time staged payload with concrete credential-harvesting and network-exfiltration behavior. The benign library build does not mitigate the preinstall attack path.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source
Trigger
npm preinstall
Impact
GitHub tokens and other local credentials may be collected and exfiltrated during installation.
Mechanism
downloads a runtime and executes an obfuscated credential-harvesting payload
Attack narrative
npm preinstall launches setup.mjs. It either invokes an existing Bun executable or downloads a platform-specific Bun archive from GitHub, extracts it to a temporary directory, and uses it to execute the bundled obfuscated math_init.js. Static inspection of that payload shows child-process, filesystem, token and cloud-credential references, GitHub token handling, and fetch-based network transmission, inconsistent with the declared UI bridge package.
AI rationale
This is an unconsented install-time staged payload with concrete credential-harvesting and network-exfiltration behavior. The benign library build does not mitigate the preinstall attack path.
Evidence
package.jsonsetup.mjsmath_init.jsdist/index.js/etc/os-release
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` in preinstall.
- setup.mjs downloads Bun from GitHub and executes `math_init.js` during install.
- math_init.js is heavily obfuscated and contains credential-related `.aws`, `token`, `gh token`, filesystem, child-process, and fetch logic.
- The payload scans GitHub-token sources and sends collected data through network requests.
Evidence against
- dist/ and src/ implement the stated Knockout/React bridge and show no malicious runtime behavior.
- The public package entrypoint is dist/index.js, not the installer 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
HighPrevious Version Dangerous Deltasetup.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/ko-bridge@38.1.4.
The versions list below shows the verdict for each recorded version.
- Avoid installing @servicetitan/ko-bridge@38.1.4. 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: .
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