python-devplatform-client

Details

**Severity:** Critical

**Affected versions:** `= 0.0.1`

## Source: kam193 (2b75d4d8e3c822aa82b716e6752c0901447845d442973ce9bc35c78b9c81c78a)
Package presents little functionality, but excessive fake 'telemetry' module. This fake telemetry is used to download and run malicious executables. Code is designed to survive different blocks: first, there is an attempt to download the executable from one of five Cloudflare Workers. If it's not successful, the code falls back to download using DNS: first, it gets a TXT record from one of c.*.dl.well1[.]site domains, depending on the system. This record returns a number, which is then used to iterate over domains in the form <0...n>.*.dl.well1[.]site and reconstruct the encoded executable from their TXT records. The downloaded binary is then executed and removed afterward. Using a PTH file ensures persistence and runs on every Python start. In this campaign, versions 0.0.1 hold disarmed code (without the necessary configuration), which is completed in further updates.

This is a continuation of the 2026-07-haproxy-config-client campaign.


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


Campaign: 2026-07-andreiiiiiii_i


Reasons (based on the campaign):


 - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.


 - The package overrides the install command in setup.py to execute malicious code during installation.


 - Downloads and executes a remote executable.


 - covering-tracks


 - persistence


 - abuses-pth


 - data-stored-in-dns

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/python-devplatform-client/MAL-2026-10916.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/python-devplatform-client
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/python-devplatform-client/MAL-2026-10916.json
- https://tria.ge/260720-teqmlshs6y/behavioral1
- https://www.virustotal.com/gui/file/06f1c2f0c66cf13ab6702414e8dce7c4115939f3e9cf95e9a8baade58961c016/detection
- https://www.virustotal.com/gui/file/1360bb7437f5e7790747bc4e31eedcd19f88f23b20362a42368f4179b8b9e27d/detection
- https://www.virustotal.com/gui/file/230f81f18608800912def92e18999874e004cd9fb4a554f759f77e4dd2030081/detection
- https://www.virustotal.com/gui/file/c98444d6aebfd87f2f4412e1d7aafe8fe3fe080139ca1111049ea83fe828cd1d/detection
- https://github.com/advisories/GHSA-rq9m-gg4h-5hrp

Compromised versions (1)

• = 0.0.1

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