registry / Install hook abuse / superoc
superoc
Multi-provider API key & OAuth account rotator plugin for OpenCode — NVIDIA NIM, Google Gemini & Google Cloud Code Antigravity
This report shows the evidence for superoc@0.1.25. 3 of 7 known versions are blocked or flagged. The newest version, 0.1.26, is flagged. See all versions.
AI Security Review
scanned 27d ago · by lpm-firewall-aiThe automatic postinstall performs broad, unconsented mutation of an external AI-agent configuration and establishes a lifecycle self-dependency chain. This is concrete install-hook abuse, not merely explicit user setup.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source
Trigger
npm postinstall during package installation.
Impact
A package installation silently persists and activates this plugin in the user's AI-agent environment, with a recursive release-selection path.
Mechanism
The lifecycle script rewrites OpenCode configuration, adds itself as a dependency, copies package files, and writes an auto-discovery plugin file.
Attack narrative
Installing the package automatically runs a script that alters OpenCode configuration, injects the package into plugin lists, writes an auto-discovery module, and creates an OpenCode-local package dependency on a version range of itself. This provides silent persistence and activation in an AI-agent control surface. The Windows branch additionally persists an environment setting through PowerShell.
AI rationale
The automatic postinstall performs broad, unconsented mutation of an external AI-agent configuration and establishes a lifecycle self-dependency chain. This is concrete install-hook abuse, not merely explicit user setup.
Evidence
package.jsonscripts/postinstall.jsplugins/superoc.jsauth.json
Decision evidence
public snapshotAI called this Malicious at 98.0% confidence as Malware with low false-positive risk.
Evidence for block
- The package declares an automatic postinstall script.
- The postinstall script rewrites the OpenCode configuration and registers the package as a plugin.
- The installer adds a version range for superoc to an OpenCode configuration package dependency, creating a nested self-dependency chain.
- The installer creates an OpenCode plugin auto-discovery file.
- On Windows, the installer runs PowerShell to set a persistent user environment variable.
- The postinstall script invokes its installer automatically.
Evidence against
- The inspected Antigravity module uses Google OAuth endpoints and a localhost callback; no unrelated credential recipient was identified there.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStringsUrlStrings
Source & flagged code
8 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node scripts/postinstall.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node scripts/postinstall.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgscripts/postinstall.jsView file
12const CONFIG_DIR = join(xdgConfig, "opencode");
L13: const jsoncPath = join(CONFIG_DIR, "opencode.jsonc");
L14: const jsonPath = join(CONFIG_DIR, "opencode.json");
L15: const CONFIG_PATH = existsSync(jsoncPath) ? jsoncPath : jsonPath;
...
L146: try {
L147: await mkdir(CONFIG_DIR, { recursive: true, mode: 0o700 });
L148: } catch (err) {
...
L256: const targetDist = join(targetModuleDir, "dist");
L257: await mkdir(targetDist, { recursive: true });
L258: fs.cpSync(localDist, targetDist, { recursive: true });
L259: }
...
L261: if (existsSync(localPkg)) {
Findings
1 Critical6 High4 Medium5 Low
CriticalAi Agent Control Hijackscripts/postinstall.js
HighInstall Time Lifecycle Scriptspackage.json
HighEntrypoint Build Divergencescripts/postinstall.js
HighSandbox Evasion Gated Capabilitydist/antigravity.js
HighSemantic Analysis Limiteddist/antigravity.js#virtual:normalized:round1
HighKnown Malware Source Similaritydist/antigravity.js
HighPrevious Version Dangerous Deltascripts/postinstall.js
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
Affected versions and remediation
This report applies to superoc@0.1.25.
The versions list below shows the verdict for each recorded version.
- Avoid installing superoc@0.1.25. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.