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OpenAdvisories
Malicious MAL-2025-191728

fernets

PyPI package · versions 0.0.1

Reported May 27, 2025 · Updated Dec 12, 2025

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: kam193 (95fc75ed8a4cfcccc988b2241772effbc15eb3700a6a96f3183981a1b4c7fba7)
If imported, the module starts a multi-stage infostealer, exfiltrating browser data as well as crypto wallets, and also attempts to monitor clipboard looking for crypto wallets addresses

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

Campaign: 2025-05-fernets

Reasons (based on the campaign):

- infostealer

- clipboard-stealing

- exfiltration-generic

- obfuscation

- exfiltration-browser-data

- exfiltration-crypto

- typosquatting

Indicators of compromise

Shown defanged and not clickable. Search any indicator to find other packages using it.

URLs

IP addresses