registry / Malware / a.poltoradnev-package-b

a.poltoradnev-package-b

This report shows the evidence for a.poltoradnev-package-b@33.9.1. 2 of 2 known versions are blocked or flagged. 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.

OpenSSF/OSV Malicious Advisory

imported 3mo ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-12126 confirms this npm version as malicious.

Advisory

MAL-2026-12126

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in a.poltoradnev-package-b (npm)

Details

On require() of the package, index.js loads _bridge.js which selects a platform-specific output path, fetches an opaque binary over HTTPS from Cloudflare Workers hosts whose names are assembled from split string fragments (oob-worker.cf100-4.16.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev), writes it to /var/tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd. A DNS-TXT fallback channel reconstructs a base64 payload from numbered subdomains under tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, and win.dl.well1.site when the HTTPS fetch fails. Destination hostnames are constructed at runtime via Array.join on split fragments to evade static analysis. The written binary is unpinned, unsigned, and unverified, and the code path fires as an import-time side effect rather than through any explicit user action; cover-story identifiers (analytics_state, dotnet_diag_, a DISABLE_TELEMETRY gate) do not correspond to installer-configured behavior.

References

OpenSSF/OSV advisory OpenSSF JSON PACKAGE PACKAGE

Source & flagged code

0 flagged

No flagged code excerpts are attached to this scan.

Source & flagged code

0 flagged · loading source

No flagged code excerpts are attached to this scan.

Findings

1 High

HighOsv Malicious Advisory

Affected versions and remediation

This report applies to a.poltoradnev-package-b@33.9.1.

The same advisory and Firewall decision cover 2 recorded versions

0.0.2, 33.9.1

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

Avoid installing a.poltoradnev-package-b@33.9.1. 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: 2026-08-05 09:30:28.000Z (UTC).

Source advisory published: 2026-08-05 09:11:13.000Z (UTC).

This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.

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

Versions

2 known versions

33.9.1latestshownMaliciousMalwareBlockPublishedAug 2, 2026, 7:20 PM 0.0.2MaliciousMalwareBlockPublishedAug 2, 2026, 7:13 PM

OpenSSF/OSV Malicious Advisory

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other malware packages

Source & flagged code

Related packages

Other malware packages