registry / Remote code execution / evo-web-base-analytics-data
evo-web-base-analytics-data
Evo web base analytics data SDK for internal consumers
This report shows the evidence for evo-web-base-analytics-data@20.1.5. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
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 a concrete import-time remote-code-execution chain unrelated to the minimal exported SDK. The absence of npm lifecycle hooks does not mitigate runtime execution on ordinary use.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Any runtime require/import of index.js.
Impact
Arbitrary native code execution as the importing user.
Mechanism
import-time staged payload download and detached execution
Attack narrative
Requiring the advertised entrypoint silently imports _support.js. That module runs immediately, retrieves a payload from obfuscated CDN-like hosts or DNS TXT records, writes it to a temporary executable path, grants execute permission on Unix, and launches it detached through /bin/sh or cmd.exe. The package offers no integrity verification or explicit opt-in.
AI rationale
This is a concrete import-time remote-code-execution chain unrelated to the minimal exported SDK. The absence of npm lifecycle hooks does not mitigate runtime execution on ordinary use.
Evidence
index.js_support.jspackage.jsonlib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>TEMP/analytics_stateTEMP/dotnet_diag_<random>.exe
Network endpoints7
oob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/packageoob-worker.cf100-416.workers.dev/pkg/packagec.tin.dl.well1.sitec.tina.dl.well1.site
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _support.js on every package require.
- _support.js immediately calls main() at import.
- _support.js downloads executable-sized bytes from obfuscated workers.dev hosts or DNS TXT.
- Downloaded bytes are written under /var/tmp or TEMP, chmodded, then spawned detached via shell.
- No checksum, signature, or user configuration guards remote payload execution.
Evidence against
- package.json has no lifecycle scripts.
- The public SDK class itself is minimal and does not need the loader.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
3 flagged · loading source_support.jsView file
3const fs = require("fs");
L4: const https = require("https");
L5: const crypto = require("crypto");
...
L47: const CACHE_TTL = 22907;
L48: const _l = (...a) => process.stderr.write("");
L49:
...
L60: const isWin = _p("platform") === "win32";
L61: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L62: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_support.jsView on unpkg · L33Trigger-reachable chain: manifest.main -> index.js -> _support.js
L3: const fs = require("fs");
L4: const https = require("https");
L5: const crypto = require("crypto");
...
L47: const CACHE_TTL = 22907;
L48: const _l = (...a) => process.stderr.write("");
L49:
...
L60: const isWin = _p("platform") === "win32";
L61: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L62: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: 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.
_support.jsView on unpkg · L3Findings
2 Critical1 High3 Medium2 Low
CriticalDownload Execute_support.js
CriticalTrigger Reachable Dangerous Capability_support.js
HighChild Process_support.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to evo-web-base-analytics-data@20.1.5.
The versions list below shows the verdict for each recorded version.
- Avoid installing evo-web-base-analytics-data@20.1.5. 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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