{"answers":{"affected":"1 open source package ship an affected version, including fastercode.","exploited":"There is no known exploitation of MAL-2026-6206 in the wild and no public exploit code.","fix":"Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.","what":"MAL-2026-6206 is a malicious package in fastercode, published on 19 Jun 2026."},"fix_prompt":"MAL-2026-6206 is a malicious package: fastercode (PyPI). Every version was published to cause harm.\n\nTask:\n1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.\n2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.\n3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.\n4. If the package is not used anywhere, say so and change nothing.\n\nReference: https://insights.sbomify.com/MAL-2026-6206/ (Markdown: https://insights.sbomify.com/MAL-2026-6206/index.md)","id":"MAL-2026-6206","markdown":"https://insights.sbomify.com/MAL-2026-6206/index.md","name":"MAL-2026-6206","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package advertises itself as a Python performance helper (\"Make your Python code run faster\") and exposes a single public function `run()`. On Windows, calling `run()` fetches `BackgroundSyncService.exe` from `https://raw.githubusercontent.com/manhhungdev0603/kl.py/refs/heads/main/BackgroundSyncService.exe`, writes it to `%PROGRAMDATA%\\BackgroundSyncService\\`, and launches it via `subprocess.Popen([local_filepath], shell=True)` (fastercode/core.py:7-22). The source URL is a mutable branch reference on a personal GitHub account; the repo is named `kl.py` (suggestive of \"keylogger.py\"); the binary is unsigned, unpinned, and unrelated to the package's advertised purpose. All exceptions during download/execute are swallowed silently. Package metadata lists `author=\"Anonymous\"` with no email or homepage, consistent with a throwaway publish account. Any developer who imports fastercode and calls its only public API on Windows runs an attacker-controlled executable persisted under PROGRAMDATA.\n\nThe package contains code to download and run a malicious executable. The executable contains a remote access trojan controlled via Telegram bot, with capabilities like a keylogger, screen recording, command execution. It also attempts to gain persistence via startup registry keys.\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\nCampaign: 2026-06-fastercode\n\nReasons (based on the campaign):\n\n - Downloads and executes a remote executable.\n\n - peristence-autorun\n\n - uses-telegram-bot\n\n - keylogger\n\n - rat\n\n - spyware-like","ecosystems":["PyPI"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Malicious code in fastercode (PyPI)","id":"MAL-2026-6206","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"PyPI","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":[],"last_affected":[],"package":"fastercode","purl":"pkg:pypi/fastercode","source":"MAL-2026-6206"}],"products":null,"published":"2026-06-19","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"OpenSSF Malicious Packages","prefix":"MAL"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/MAL-2026-6206/"}