sisaws

GHSA-r5wj-fcgv-69xg

Malicious code in sisaws (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 2.1.6`

## Source: google-open-source-security (0cc916986327ca493d55160fe841e48b756a40e030f59880874386e9e1e8a148)
This package installs the SilentSync remote access trojan and allows remote
code execution and data exfiltration. Windows machines are targetted by this
malicious package.

## Source: kam193 (9667d1a2319af413eca4126f0d483a18c0b5e8118e0e28cdf69c653ff75b1b57)
Calling a method starts downloading and starting an infostealer script


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


Campaign: 2025-08-secmeasure


Reasons (based on the campaign):


 - action-hidden-in-lib-usage


 - Downloads and executes a remote malicious script.


 - infostealer

---

Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/sisaws/MAL-2025-47453.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/sisaws
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/sisaws/MAL-2025-47453.json
- https://www.zscaler.com/blogs/security-research/malicious-pypi-packages-deliver-silentsync-rat
- https://github.com/advisories/GHSA-r5wj-fcgv-69xg

Compromised versions (1)

= 2.1.6

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