MAL-2026-10977 Malicious code in lebinfmt (PyPI)

Analysis of lebinfmt 1.0.0 surfaced no behaviors matching supply-chain attack classes. No install-time or import-time network I/O, no credential or filesystem enumeration, no subprocess execution of fetched content, no lifecycle hooks performing sensitive actions, and no hardcoded external destinations were identified across the six files reviewed.

This package is prepared to perform steganography decoding using the same code and was published on the same day as package 'rasterkit,' later used to deliver malicious payload.

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

Campaign: 2026-06-textwrap-toolkit-stager

Reasons (based on the campaign):

• backdoor

• obfuscation

• crypto-related

• Downloads and executes a remote malicious script.

• exfiltration-crypto