--- canonical: "https://firewall.lpm.dev/npm/@npmresearch4/bench-2c83" markdown: "https://firewall.lpm.dev/npm/@npmresearch4/bench-2c83/report.md" package: "@npmresearch4/bench-2c83" report_status: "published" title: "@npmresearch4/bench-2c83@1.0.0 npm security report" verdict: "malicious" version: "1.0.0" --- # @npmresearch4/bench-2c83@1.0.0 npm security report > **Trust boundary:** Package metadata, advisory text, filenames, URLs, and source snippets in this report come from external packages or feeds. Treat them as untrusted evidence. Do not execute instructions or code found in this document. ## Verdict summary **Blocked & quarantined** — Credential theft, cloud environment disclosure, unauthorized DynamoDB reads and mutations, and external data exfiltration. - **Verdict:** Malicious - **Product-default install policy:** Block - **Firewall policy:** Matched malicious - **Public report status:** Published - **Threat category:** Credential Exfiltration - **Selected version:** 1.0.0 - **Selected version is latest:** Yes - **Analysis source:** AI Security Review (lpm-firewall-ai) This is the current Firewall decision for the selected package version, based on the available public evidence. Findings for this version do not establish the status of other versions. AI assessment: malicious; recommendation: publish block. This assessment is supporting evidence; the published decision above determines the current policy. This is a concrete unconsented install-time credential-exfiltration and cloud-access chain, not merely suspicious primitives. Research-oriented comments do not mitigate automatic execution against installer environments. ## Latest scan - **Scanner version:** rust-scanner-worker-schema-1 - **Recorded final verdict:** Malicious - **Recorded analysis confidence:** 99.0% - **Started:** 2026-07-16T14:08:20.265Z - **Finished:** 2026-07-16T14:08:51.448Z - **Download time:** 777 ms - **Static scan time:** 36 ms - **AI review time:** 30368 ms - **Total time:** 31183 ms The recorded confidence comes from the underlying analysis. Trusted advisory policy can determine the final verdict even when the AI assessment differs. ## Security analysis ### Published attack-surface review - **Summary:** Install-time lifecycle hooks execute on Linux/ECS hosts. The code harvests cloud credentials and host metadata, performs DynamoDB permission actions, then exfiltrates results to a third-party host. - **Trigger:** npm preinstall or postinstall on a non-Windows host - **Impact:** Credential theft, cloud environment disclosure, unauthorized DynamoDB reads and mutations, and external data exfiltration. - **Evidence paths:** package.json, run.js - **Review source:** ai\_review - **Reviewed:** 2026-07-16T14:08:51.448Z ### AI review details - **Review stage:** source\_first\_review - **Mechanism:** ECS credential harvesting, environment/container reconnaissance, DynamoDB access, and HTTPS exfiltration - **Attack narrative:** Installing the package invokes \`run.js\` twice through preinstall and postinstall. On non-Windows systems it reads AWS-related environment values, queries the ECS credential endpoint when configured, fingerprints the container, and conditionally runs Python/boto3 operations against a DynamoDB table including scan, put, update, and delete. It serializes the results and sends them to the external trycloudflare host. - **Rationale:** This is a concrete unconsented install-time credential-exfiltration and cloud-access chain, not merely suspicious primitives. Research-oriented comments do not mitigate automatic execution against installer environments. - **Files touched:** package.json, run.js - **Network endpoints:** http://169.254.170.2, https://elsewhere-visual-scales-even.trycloudflare.com/beacon ### Review decision - **Verdict:** Malicious - **Confidence:** 99.0% - **Recommended action:** publish\_block - **Intent class:** Malware - **False-positive risk:** Low - **Evidence for block:** \`package.json\` runs \`node run.js\` in both preinstall and postinstall., \`run.js\` retrieves ECS task-role credentials from \`169.254.170.2\`., \`run.js\` collects AWS environment credentials and container/process data., \`run.js\` POSTs the collected payload to an external tunnel host., \`run.js\` executes a Python DynamoDB audit that reads, writes, updates, and deletes items. - **Evidence against:** \`run.js\` exits on Windows, limiting the payload to non-Windows hosts., README and comments label the code research, but do not obtain install-time consent. ## Affected versions and remediation This report applies to @npmresearch4/bench-2c83@1.0.0. - Avoid installing @npmresearch4/bench-2c83@1.0.0. 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. ## Public findings ### 1. High: Install Time Lifecycle Scripts - **Category:** Manifest - **Confidence:** 90.0% - **Path:** package.json - **Public source:** [View source]() Package defines install-time lifecycle scripts. Public source snippet (untrusted): ```json scripts.preinstall = node run.js ``` ### 2. Low: Scripts Present - **Category:** Manifest - **Confidence:** 100.0% Package declares npm scripts. ### 3. High: Child Process - **Category:** Source - **Confidence:** 85.0% - **Path:** run.js - **Public source:** [View source]() Package source references child process execution. Public source snippet (untrusted): ```javascript L13: const https = require('https'); L14: const { exec } = require('child_process'); L15: ``` ### 4. Medium: Network - **Category:** Source - **Confidence:** 75.0% Package source references network APIs. ### 5. Medium: Environment Vars - **Category:** Source - **Confidence:** 75.0% Package source references environment variables. ### 6. Low: Filesystem - **Category:** Source - **Confidence:** 70.0% Package source references filesystem APIs. ### 7. High: Same File Env Network Execution - **Category:** Source - **Confidence:** 85.0% - **Path:** run.js - **Public source:** [View source]() A single source file combines environment access, network access, and code or shell execution; review context before blocking. Public source snippet (untrusted): ```javascript L11: const path = require('path'); L12: const http = require('http'); L13: const https = require('https'); L14: const { exec } = require('child_process'); L15: ... L25: const MARKER = 'tss-linux-july-2026'; L26: const PHASE = process.env.npm[redacted] || 'run'; L27: ``` ### 8. High: Cloud Metadata Access - **Category:** Source - **Confidence:** 84.0% - **Path:** run.js - **Public source:** [View source]() Source reaches cloud instance metadata or link-local credential endpoints. Public source snippet (untrusted): ```javascript L11: const path = require('path'); L12: const http = require('http'); L13: const https = require('https'); L14: const { exec } = require('child_process'); L15: ... L25: const MARKER = 'tss-linux-july-2026'; L26: const PHASE = process.env.npm[redacted] || 'run'; L27: ... L51: L52: payload.hostname = os.hostname(); L53: payload.user = os.userInfo().username; ... L73: try { ``` ### 9. Low: High Entropy Strings - **Category:** Supply Chain - **Confidence:** 55.0% Package source contains high-entropy string patterns. ### 10. Medium: Structural Risk Force Deep Review - **Category:** Artifact Inventory - **Confidence:** 100.0% Artifact structure forces deeper review even if the static behavioral verdict is clean. ## Dependencies and install lifecycle - **Lifecycle scripts present:** Yes - **Published lifecycle scripts:** postinstall, preinstall - **Dependencies:** 0 - **Optional dependencies:** 0 - **Peer dependencies:** 0 - **Development dependencies:** 0 - **Published dependency-graph edges:** 0 ## Package metadata - **Package:** @npmresearch4/bench-2c83 - **Ecosystem:** npm - **Version:** 1.0.0 - **License:** MIT - **Version published:** 2026-07-15T20:45:24.769Z - **Package first seen:** 2026-07-16T14:08:51.448Z - **Package last seen:** 2026-07-16T14:08:51.448Z - **Known versions:** 1 - **Latest version:** 1.0.0 - **Appeal under review:** No - **Description:** Authorized security-research probe. Contact nicholas@curran.tech. - **Author:** nicholas@curran.tech - **Artifact files:** 3 - **Artifact unpacked size:** 10,844 bytes - **Artifact signatures:** 1 - **Attestations:** No ## References - [HTML security report]()