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 (d8c5174968b7dedf000076201fe6446018aa61048b6a77fc8bc42e16bb796fd9)
Malicious clone of legitimate fsspec package. The code was modified to exfiltrate specific files on import.
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Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-01-old-cflashfiles
Reasons (based on the campaign):
- clones-real-package
- files-exfiltration
Indicators of compromise
Shown defanged and not clickable. Search any indicator to find other packages using it.
URLs
- hxxp://87[.]251[.]77[.]103:5000 other packages →