Malicious code in okite (PyPI)

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Source: amazon-inspector (3cc7d54b0e30e24367551e3f19ab7387cf397cf9e1b5889c9f04ff871c771c38)

The package installs okite-setup.pth, which Python auto-loads on every interpreter start. The.pth file contains a one-line obfuscated exec() of a string program (variables reduced to one- and two-character names like _o, _s, _u, _b, _z, _zf) that performs urllib.request.urlretrieve against https://github.com/oven-sh/bun/releases/download/bun-v1.3.13/bun-{platform}-{arch}.zip, extracts the Bun JavaScript runtime to /tmp/b/bun, chmods it 0755, and runs a sibling _index.js (with a glob fallback */_index.js) via subprocess as bun run _index.js. Execution is gated only by a /tmp/.bun_ran sentinel so it fires once per temp directory lifetime. The stated package purpose is "A Pythonic RPC package" — there is no legitimate reason an RPC library would fetch and execute an alternate language runtime, and routing the payload through Bun deliberately bypasses Python-level inspection of the actual behavior. The combination of (a) execution at every interpreter start via.pth abuse, (b) outbound fetch of a runtime from a third-party release host, (c) use of that runtime to execute a bundled JS file, and (d) heavy obfuscation in a file format that should contain only import statements is an unambiguous alternate-runtime-dropper pattern.

Source: kam193 (ec7e17ca2529781ce61d69b2d7e765c5e3e790d3ae2e2f187b006d710d7f9ed1)

Versions 0.0.7, 0.0.8 were compromised.

Compromised packages start an obfuscated infostealer. The infostealer is a heavily obfuscated JavaScript code executed using Bun runtime on Python startup. It collectes all kinds of sensitive data, including API keys, credentials to package repositories, cryptocurrency assets, password manager data. Infostealer actively queries online services to collect additional secrets as well as attempts to gain persistence and spread further by publishing infected packages using collected credentials. Data are exfiltrated likely using Github. The code seems to threaten to wipe the user's data if it detects invalid GitHub tokens. Cleanup should be done with caution.

It seems to be related to the recent Mini Shai Hulud campaign.

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

Campaign: 2026-06-compr-woodpecker

Reasons (based on the campaign):

• compromised-package

• exfiltration-env-variables

• exfiltration-cloud-tokens

• exfiltration-credentials

• abuses-pth

• obfuscation

• infostealer

• The package contains code to detect if it is running in a sandbox environment.

• exfiltration-crypto

• files-exfiltration

• destructive-actions