MAL-2026-5273

Dashboard / Malicious Package / MAL-2026-5273

MAL-2026-5273

Summary: Malicious code in anthropy (PyPI)

Details: Source: amazon-inspector (8fa5e8904e682bfc10273961eb25b914c8d79b89e2a6c923c32bb9b3233d41c2) The package `anthropy` is a one-character typosquat of the legitimate `anthropic` PyPI SDK. The sole module `anthropy.py` executes a classic Python reverse shell at import time: it opens a TCP socket to 54.176.251.240:9001, duplicates the socket file descriptor over stdin/stdout/stderr, and spawns an interactive `sh` via `pty.spawn`. The same payload also fires when the `anthropy` console script declared in `pyproject.toml` is invoked. The package ships no API surface matching its name (project summary is just 'hello world') — its only behavior is the reverse shell. Any developer who mistypes `pip install anthropic` and then imports the package, or runs the installed CLI, hands an interactive shell on their machine to the operator of 54.176.251.240. Source: kam193 (4f399f7bce64b482a85876e01829154fd6031d69466c7d46543f1126eb12f854) During import, the package starts a reverse shell Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-06-anthropy Reasons (based on the campaign): - The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.

References: https://bad-packages.kam193.eu/pypi/package/anthropy, https://pypi.org/project/anthropy/0.0.4/, https://pypi.org/project/anthropy/0.0.2/, https://pypi.org/project/anthropy/0.0.3/