Threats tagged 'pypi'

A coordinated PyPI compromise campaign involving 37 malicious wheel artifacts across 19 packages was detected, utilizing Python startup hooks to execute credential-stealing payloads. The attack leverages .pth files for automatic execution during Python interpreter startup, downloads the Bun JavaScript runtime, and runs obfuscated JavaScript payloads. The malware targets high-value developer and CI/CD credentials including GitHub, npm, PyPI, cloud providers (AWS, GCP, Azure), Kubernetes, Vault, SSH keys, and AI tool tokens. This represents a PyPI branch of the Shai-Hulud/Miasma campaign family, using a Hades-themed variant for GitHub exfiltration. Compromised packages included established bioinformatics tools with significant download counts, stemming from apparent maintainer account takeover. The payload employs multi-layer obfuscation, AES-GCM encryption, and exfiltrates data through GitHub repositories with distinctive markers. The campaign demonstrates cross-runtime attack capabilities and ecosystem-spe...

The uprobe PyPI package versions 0.1.3 and 0.1.4 were compromised to include malicious code that executes on every Python interpreter startup. This code downloads and runs an obfuscated JavaScript infostealer using the Bun runtime, collecting sensitive data such as API keys, credentials, cryptocurrency assets, and password manager data. The malware attempts persistence and propagation by publishing infected packages using stolen credentials and may wipe user data if invalid GitHub tokens are detected. The malicious behavior is hidden via obfuscation and uses a sentinel file to evade detection. The package's advertised functionality does not require a JavaScript runtime, indicating the malicious nature of the code.

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (4241e99d1053712e6909db44c939421695dff66556055a93058f9a55f8694929) The package was found to contain malicious code or consuming dependency that contains malicious code ## Source: kam193 (6806267ad399a4b51411f5176e26470cccb7803dff5f0f6f1e3dca6e6c82170c) Versions 0.4.4, 0.4.5 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (6db8a103a73261cd6de8f763fa639d1bd148124ca661893e9d3ab73cd76ab50b) instructor-mcp 1.15.2 is a typosquat of the legitimate `instructor` PyPI library (it copies the same author names, README, and repository URL `github.com/instructor-ai/instructor`) and ships an additional file `instructor-setup.pth` that the Python interpreter auto-executes on every `python` invocation after install. The.pth file uses an obfuscated single-line `exec(...)` with mangled aliases (`_o,_s,_u,_p,_y,_h,_g`) to bypass the `.pth` rule that only `import` lines execute. The exec body downloads the Bun JavaScript runtime from `https://github.com/oven-sh/bun/releases/download/bun-v1.3.13/bun-{platform}-{arch}.zip` to `/tmp/b/bun`, chmods it executable, then searches `sys.path` for a file named `_index.js` and runs it via `bun run _index.js`. Execution is gated by `/tmp/.bun_ran` so it fires once per host. There is no hash/signature check on the downloaded runtime, and the JS payload is whatever `_index.js` happens to be present on `sys.path` (shipped by a co-installed package or planted by a separate component) — bypassing Python static analysis entirely. This is the alternate-runtime-dropper pattern: arbitrary attacker-controlled JS is executed under a freshly downloaded non-Python runtime, with persistence via the.pth auto-load mechanism. ## Source: kam193 (d22e882ab0d869a60fcff314b04f0534f3622d7719ed3a9101d55bb6c81dcbc9) Versions 1.15.2, 1.15.3 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (5c765c6eef25d18c5a10057d62908ac3bc1ece86e39a9807683834fb7f896b52) The package was found to contain malicious code or consuming dependency that contains malicious code ## Source: kam193 (d2fc000f15b66037b67d503cef346f32d400b0cc704417b28ff6c559c9924d8f) Versions 6.0.1 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (7d9526ae43236ac15964b307175384455975ace26d8157ef3c41ed8db8192562) The package was found to contain malicious code or consuming dependency that contains malicious code ## Source: kam193 (6b28e6bb345bcdb4726198079a56fcbbb0e73d4d2309c1927c0c8803d515232f) Versions 3.3.2 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. --- 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

The package `ppkt2synergy` version 0.1.1 contains a malicious `.pth` file (`ppkt2synergy-setup.pth`) that executes a Bun-based credential stealer on every Python startup via CPython's `site.py` exec() mechanism. The payload downloads the Bun runtime from the official GitHub release page, then runs an obfuscated JavaScript stealer that exfiltrates environment variables, .env files, SSH keys, and cloud credentials to an attacker-controlled GitHub repository. This is part of the Hades/Miasma campaign (also called Shai-Hulud), attributed to the TeamPCP threat actor. Novel finding: `gpsea/_index.js` (same campaign) embeds CBRN-level dangerous-content text to trigger AI safety refusals in LLM-based security scanners, causing them to skip the file entirely. C2 IP: 20.207.73.82 Sentinel file: /tmp/.bun_ran MITRE ATT&CK: T1546.018 --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (6aaf8475393e38b34340b1c315fd6be8d9fa3978cd3c768fd606a0bdd3f926ba) The package was found to contain malicious code or consuming dependency that contains malicious code ## Source: kam193 (d19f56d2a094e12c68d93451d28850565320597f40a8f320449200e919c8a9d3) Versions 0.1.1 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (4a5756a79331cdda67721e39889609f5c0b5e342b678dbce2de97c94ec2dbe29) The package installs `funcdesc-setup.pth`, which Python auto-executes at interpreter startup for any environment where this package is installed. The.pth file is obfuscated with single-letter aliases (`_O`, `_T`, `_G`, `_o`, `_s`, `_u`,...) and wraps its real payload in `exec()` over an inline string, gated by a `/tmp/.bun_ran` sentinel. On first run it calls `urllib.request.urlretrieve` to download the Bun JavaScript runtime release archive from `https://github.com/oven-sh/bun/releases/download/bun-v1.3.13/bun-<platform>-<arch>.zip`, extracts it to `/tmp/b/bun`, chmods it executable, and then invokes `bun run _index.js` against a bundled `_index.js` shipped inside the package. The advertised purpose of funcdesc is a Python function-description protocol; there is no legitimate reason for it to fetch and run an alternate JavaScript runtime, stage binaries in `/tmp`, or execute opaque bundled JS outside the documented Python API. The pattern (auto-loaded.pth, obfuscated exec, alternate-runtime dropper, mismatched purpose, in-file `__version__` still reading `0.2.1`) is consistent with a hijacked release rather than legitimate maintainer behavior. The harm fires automatically every time a Python interpreter starts in any environment where this version is installed, not only at `pip install`, giving the attacker arbitrary code execution on the installer's machine. ## Source: kam193 (c6f85c691f141dc4c962171ac49945286bb40e15cb8450d2f42d048a3f53bb22) Versions 0.2.2, 0.2.3 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (518c5b1627018ff52b8f3b8e83d862735009be6eaed3595922195bb3b45e6162) The package was found to contain malicious code or consuming dependency that contains malicious code ## Source: kam193 (d13836e2a6e18233bd22274b546345ad8ae8959fa00ad1c3d473568feed3f6d3) Versions 1.8.1 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. --- 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

The package `embiggen` version 0.11.97 contains a malicious `.pth` file (`embiggen-setup.pth`) that executes a Bun-based credential stealer on every Python startup via CPython's `site.py` exec() mechanism. The payload downloads the Bun runtime from the official GitHub release page, then runs an obfuscated JavaScript stealer that exfiltrates environment variables, .env files, SSH keys, and cloud credentials to an attacker-controlled GitHub repository. This is part of the Hades/Miasma campaign (also called Shai-Hulud), attributed to the TeamPCP threat actor. Novel finding: `gpsea/_index.js` (same campaign) embeds CBRN-level dangerous-content text to trigger AI safety refusals in LLM-based security scanners, causing them to skip the file entirely. C2 IP: 20.207.73.82 Sentinel file: /tmp/.bun_ran MITRE ATT&CK: T1546.018 --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (fde146ce352fe0581926c899cde5be769d4b7e0e04210bec5555889b4fe66636) The package was found to contain malicious code or consuming dependency that contains malicious code ## Source: kam193 (51ebfbf23c315702e5792c88fdc20449c798cebdbbdde4462cd98e3b7625618f) Versions 0.11.97 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (a3f2d24843d0caf23a36f07f7bd7b3adb7163463404856654f1745c7e75017be) The wheel installs pantheon_toolsets-setup.pth, which Python automatically executes at every interpreter startup (before any user import). The.pth contains a single obfuscated line using single-letter underscore-prefixed identifiers (_O, _T, _G, _o, _s, _u, _b, _a, _m, _z,...) and wraps the payload inside exec() of a string literal — a shape that has no legitimate use in a.pth file (which is normally limited to plain import statements / sys.path entries). The exec'd code: (1) checks a sentinel /tmp/.bun_ran to ensure one-shot execution, (2) downloads the Bun JavaScript runtime from https://github.com/oven-sh/bun/releases/download/bun-v1.3.13/bun-{platform}-{arch}.zip into /tmp/b/bun, (3) glob-searches the install tree for any *_index.js* file, and (4) runs it via subprocess with `bun run <globbed_index.js>`. The package is advertised as a Python AI-agent toolset and has no documented need for an alternate JavaScript runtime. The globbed _index.js payload is not declared in the wheel manifest and is fetched/staged opaquely, so the bytes ultimately executed are not auditable from the package metadata. Additional tampering fingerprint: the 0.5.5 RECORD references a 0.5.4 dist-info directory and lists its own RECORD with the empty-string SHA-256 and zero size, consistent with a malicious file appended to an otherwise legitimate build by someone with publish credentials. Installing this package causes arbitrary attacker-stageable code to run with the user's privileges every time `python` is invoked. ## Source: kam193 (9c9711927907f09a0ef2b146d3aba3b8a06197b9af3f639d579015cdab7c0d5d) Versions 0.5.5, 0.5.6 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (8d1c97dced5d8f917e2e9901e0ed99fb0034bfafb5a3d46ad47eeba76a883c57) The package installs `mrbios-setup.pth` into site-packages. Python auto-loads.pth files at every interpreter startup, so the contained payload runs unconditionally for any `python` invocation on a machine where mrbios has been installed — not just when the package is explicitly imported. The payload is wrapped in an `exec()` of a string built from single-letter aliased imports (`_o`, `_s`, `_u`, `_p`, `_y`, `_T`, `_G`) to evade static review. When executed, it downloads the Bun JavaScript runtime from `https://github.com/oven-sh/bun/releases/download/bun-v1.3.13/bun-{os}-{arch}.zip` to `/tmp/b/bun`, chmods it executable (mode 509 / 0o775), and invokes it to run a sibling `_index.js` shipped in the package. A `/tmp/.bun_ran` sentinel gates re-execution per temp directory. The package advertises itself as a 'bioinformatics scripts management tool' and has no documented need for a JavaScript runtime; the JS payload runs outside Python's introspectable surface, so its behavior is not visible to ordinary Python tooling. The combination of unconditional auto-execution via.pth, deliberate obfuscation, alien-runtime fetch from a non-publisher source, and execution of bundled JavaScript whose contents are opaque to the Python ecosystem constitutes an install/startup-time remote code execution surface against any installer. ## Source: kam193 (3bc0ad232af6f3dafcf2d02441531485e0b459c2659542375c62f4f7003c9e08) Versions 0.1.1, 0.1.2 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (b441b436c1f6aeba65c2af68c71655ed5aac95b0eb2ae4c402fc090c475ba887) The package was found to contain malicious code or consuming dependency that contains malicious code ## Source: kam193 (f5d3bf9e3bbd5c258d251ade5a15f3383a47a53ddd399d7cd3db2aee5cec45c4) Versions 0.6.8, 0.6.9 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. --- 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

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0357c6b685cea74f9200e3e7df019e807e34eac6518ec83f1a5a654c35d97959) The package was found to contain malicious code or consuming dependency that contains malicious code ## Source: kam193 (e98ac1a9b5840905b608a09e8e66c73b750c0baa17d6b7789adfc94a8fd815e4) Versions 0.1.2, 0.1.3 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. --- 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

The executor-engine PyPI package versions 0.3.4 and 0.3.5 contain a malicious site-packages.pth file that executes obfuscated code on every Python interpreter start. This code downloads and runs a JavaScript infostealer using the Bun runtime, which collects sensitive data including API keys, credentials, cryptocurrency assets, and password manager data. The malicious code attempts persistence and propagation by publishing infected packages using stolen credentials and may perform destructive actions if invalid GitHub tokens are detected. The compromise appears to be a repackaging of a legitimate release with added malicious payloads, linked to the Mini Shai Hulud campaign.

The mflux-streamlit PyPI package versions 0.0.3 and 0.0.4 were found to contain malicious code that acts as an obfuscated infostealer. This malicious code executes via the Bun runtime on Python startup and collects sensitive data such as API keys, package repository credentials, cryptocurrency assets, and password manager information. It also queries online services for additional secrets, attempts persistence, and spreads by publishing infected packages using stolen credentials. The malware may wipe user data if invalid GitHub tokens are detected. This threat is linked to the Mini Shai Hulud campaign and includes sandbox detection and destructive actions.

The ensmallen package version 0.8.101 on PyPI was found to contain malicious code acting as an infostealer. This heavily obfuscated JavaScript code runs via the Bun runtime on Python startup and collects sensitive data such as API keys, package repository credentials, cryptocurrency assets, and password manager information. It also attempts to gain persistence and spread by publishing infected packages using stolen credentials. The malware may exfiltrate data through GitHub and threatens to wipe user data if invalid GitHub tokens are detected. This compromise is linked to the Mini Shai Hulud campaign and involves sandbox detection and destructive actions.

The PyPI package 'gpsea' version 0.9.14 contains a malicious .pth file that executes a Bun-based credential stealer on every Python startup. This stealer downloads the Bun runtime and runs obfuscated JavaScript code to exfiltrate environment variables, .env files, SSH keys, cloud credentials, and other sensitive data to an attacker-controlled GitHub repository. The campaign is linked to the TeamPCP threat actor and known as Hades/Miasma or Shai-Hulud. The malicious code also attempts persistence and spreading by publishing infected packages using stolen credentials and may perform destructive actions if invalid GitHub tokens are detected. The package includes evasion techniques such as sandbox detection and uses obfuscation to hinder analysis.

The pyphetools package version 0.9.120 on PyPI contains a malicious .pth file that executes a Bun-based JavaScript credential stealer on every Python startup. This malware exfiltrates environment variables, .env files, SSH keys, cloud credentials, and other sensitive data to an attacker-controlled GitHub repository. It is part of the Hades/Miasma campaign attributed to the TeamPCP threat actor and includes obfuscation and sandbox detection techniques. The malicious code may also attempt destructive actions if invalid GitHub tokens are detected.