{"id":"MAL-2026-16408","summary":"Malicious code in snap-queue (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (e0bb29642def9150e89bacf4da4e1a64f7bc972cd145053cbb0feee0baa768f3)\nThe sdist's setup.py defines a `_wus_boot()` function that is invoked at module top-level before `setup(...)`, so it runs automatically on `pip install snap-queue`. The function uses `subprocess.Popen` to launch `pythonw.exe` (replacing `python.exe` in `sys.executable`) running a sibling file `_snapqueue_core.py` with `creationflags=0x08000000` (CREATE_NO_WINDOW), and wraps the whole call in a blanket `try/except: pass`. Standard modules are aliased under underscore names (`_os`, `_sys`, `_sp`) to reduce visual prominence. The launched `_snapqueue_core.py` is undocumented in README and package metadata and is unrelated to the advertised FIFO-queue functionality. The combined shape — install-time execution, deliberate console-window suppression on Windows, error-swallowing, and detachment of the child from the pip process — is a hidden install-time stager that hands control on the installer's machine to undocumented sibling code the moment the package is installed.\n\n## Source: kam193 (62bf582784fd41b3484157f6454ddcb6ab2ae10a5d93abeb19a5bfa5642b7e64)\nDuring installation, the package attempts to silently execute code. In analyzed versions, the payload file was missing.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-09-snap-queue\n\n\nReasons (based on the campaign):\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n","modified":"2026-09-23T02:30:05.572573583Z","published":"2026-09-22T18:42:22Z","database_specific":{"malicious-packages-origins":[{"sha256":"62bf582784fd41b3484157f6454ddcb6ab2ae10a5d93abeb19a5bfa5642b7e64","source":"kam193","versions":["1.0.0"],"id":"pypi/2026-09-snap-queue/snap-queue","import_time":"2026-09-22T18:44:15.285683562Z","modified_time":"2026-09-22T18:42:22.198932Z"},{"sha256":"66d21211753dd05cd26db975d94b4567f80e382f6bbfef1f3202595e73a20724","source":"kam193","versions":["1.0.0"],"id":"pypi/2026-09-snap-queue/snap-queue","import_time":"2026-09-22T19:16:00.430452065Z","modified_time":"2026-09-22T18:42:22.198932Z"},{"id":"IN-MAL-2026-020329","import_time":"2026-09-23T02:26:00.069486802Z","modified_time":"2026-09-23T01:51:03Z","sha256":"e0bb29642def9150e89bacf4da4e1a64f7bc972cd145053cbb0feee0baa768f3","source":"amazon-inspector","versions":["1.0.0"]}]},"references":[{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/snap-queue"},{"type":"PACKAGE","url":"https://pypi.org/project/snap-queue/1.0.0/"}],"affected":[{"package":{"name":"snap-queue","ecosystem":"PyPI","purl":"pkg:pypi/snap-queue"},"versions":["1.0.0"],"database_specific":{"cwes":[{"description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code","cweId":"CWE-506"}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/snap-queue/MAL-2026-16408.json","indicators":{"package_integrity":[{"filename":"snap_queue-1.0.0.tar.gz","hashes":{"sha256":"28e86fd26e0b5965b4afb2d6efc0550a61522418d410f1d85577ef24b1e9fc05","blake2b_256":"ac54369ccfa1c796764948293044590d8869075c4682cd34317937c2c728d90c","md5":"2319f04e55102e6ab41c5ce19c543aac"}}],"evidence_files":[{"sha256":"5811bccc1108a96fe402483138d9bbae0d9b1e0c22d46e292bde310f5da15152","tlsh":"12111200c91514b08647e19d194688a91f3b66a378d2b0e579dcc1d07f886f686b9aa6","path":"setup.py"}]}}}],"schema_version":"1.9.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"},{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"],"type":"REPORTER"},{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"],"type":"ANALYST"}]}