testingpy

GHSA-6g2q-468c-5jxx

Malicious code in testingpy (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.3`

## Source: kam193 (577f9c1cdb7d3ef0e010cc9e292142a11f3a84a9f1ed42f238a920e7e9617b35)
Package clones a legitimate library and adds a hidden code that downloads a malicious script. The script then downloads an archive with malicious executable in the version appropriate to the system architecture, and ensures persistency by adding automatically started service entries. The remote code is a Go-based inforstealer and backdoor previously attributed to Northkorean cybercrime activities. In this campaign, the malicious code is not immediately introduced in the typosquatted package, but added with an update.

Besides an infostealer, the package modifies the cloned Bittensor library to collect keys.


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Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.


Campaign: 2026-01-gztensor-cli


Reasons (based on the campaign):


 - crypto-related


 - action-hidden-in-lib-usage


 - Downloads and executes a remote executable.


 - clones-real-package


 - peristence-autorun


 - typosquatting


 - obfuscation


 - backdoor


 - infostealer

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/testingpy/MAL-2026-99.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/testingpy
- https://dmpdump.github.io/posts/NorthKorea_Backdoor_Stealer
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/testingpy/MAL-2026-99.json
- https://www.virustotal.com/gui/file-analysis/NTk2Y2FiNTBmM2QxODI2NDRlZGM0OTA2OGVjYzUxOTk6MTc2NzYzMzkzMA==
- https://www.virustotal.com/gui/file/d02d6a5da3cff57d78e260961526420c172a46f4a07d18a3865fecbf5dfebc1d/detection
- https://github.com/advisories/GHSA-6g2q-468c-5jxx

Compromised versions (1)

= 0.1.3

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.