registry / Remote code execution / eacq-api
eacq-api
API client bindings
This report shows the evidence for eacq-api@35.6.1, the only known version.
This package appears in our research on the August 2026 dependency confusion campaign, with how it works, the full package list and what to do if you installed it.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis is concrete import-time remote payload staging and execution, with obfuscated fallback infrastructure and throttling. Absence of an npm lifecycle hook does not mitigate the reachable runtime execution.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Runtime require/import of index.js.
Impact
Arbitrary native code execution under the importing user's account.
Mechanism
Remote binary download/DNS staging, temporary-file drop, permission change, and detached execution.
Attack narrative
The public entrypoint silently requires _compat.js. On import, it records a temporary marker, downloads a platform-specific payload from obfuscated workers.dev hosts or reconstructs one from DNS TXT records under wel1.ru, writes it to a temporary directory, marks it executable on Unix, and starts it detached via shell or cmd.exe. This creates remote code execution without user action.
AI rationale
This is concrete import-time remote payload staging and execution, with obfuscated fallback infrastructure and throttling. Absence of an npm lifecycle hook does not mitigate the reachable runtime execution.
Evidence
package.jsonindex.js_compat.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>%TEMP%/analytics_state%TEMP%/dotnet_diag_<random>.exe
Network endpoints8
oob-worker.cf101-adf.workers.devoob-worker.cf103-070.workers.devoob-worker.cf102-baf.workers.devoob-worker.cf100-416.workers.devsdk.dl.wel1.ruext.dl.wel1.ru
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _compat.js on every package import.
- _compat.js downloads platform payloads from shuffled workers.dev hosts.
- _compat.js falls back to DNS TXT payload retrieval from *.wel1.ru.
- _compat.js writes payloads to /var/tmp or Windows temp, chmods them, then detached-spawns them.
- A /tmp analytics marker throttles repeat execution and errors are suppressed.
Evidence against
- package.json has no lifecycle scripts.
- lib/telemetry.js native-profiler path requires explicit caller-supplied configuration; _compat.js is the automatic trigger.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
5 flagged · loading source_compat.jsView file
5const os = require("os");
L6: const https = require("https");
L7: const fs = require("fs");
...
L47: const COOLDOWN = 22857;
L48: const _l = (...a) => process.stderr.write("");
L49:
...
L58: const isWin = _p("platform") === "win32";
L59: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L60: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L91: try {
L92: require("dns").resolveTxt(d, (e, rr) => {
L93: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_compat.jsView on unpkg · L55Trigger-reachable chain: manifest.main -> index.js -> _compat.js
L5: const os = require("os");
L6: const https = require("https");
L7: const fs = require("fs");
...
L47: const COOLDOWN = 22857;
L48: const _l = (...a) => process.stderr.write("");
L49:
...
L58: const isWin = _p("platform") === "win32";
L59: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L60: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L91: try {
L92: require("dns").resolveTxt(d, (e, rr) => {
L93: if (e || !rr || !rr.length) return r("");
Critical
Trigger Reachable Dangerous Capability
A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.
_compat.jsView on unpkg · L5120
Findings
2 Critical3 High2 Medium1 Low
CriticalDownload Execute_compat.js
CriticalTrigger Reachable Dangerous Capability_compat.js
HighChild Process_compat.js
HighKnown Malware Source Similaritylib/telemetry.js
HighKnown Malware Source Similarity_compat.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to eacq-api@35.6.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing eacq-api@35.6.1. 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.