If this package is installed
Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.
Details
Source: amazon-inspector (740c9125f18d68081f742b3316d07c54727fb4aab5555a398c0c04e31ba9bb54)
Importing syswatch starts a background thread that, on Windows, fetches a JSON manifest from https://github-repo.up.railway.app/vbv_a8F3kL92xQ/manifest.json, downloads the executable referenced by manifest.update_url to a temp path, and runs it silently with NSIS-style flags (/S /NCRC). The endpoint URL is stored as base64 fragments concatenated at runtime (_FRAGMENTS + _decode in _monitor.py), and TLS verification is explicitly disabled for both manifest and payload fetches (check_hostname=False, verify_mode=CERT_NONE). After execution the code launches a ServiceHelperUtility.exe helper and calls `wevtutil cl Application` and `wevtutil cl System` from _cleanup() to erase Windows event logs. The host github-repo.up.railway.app is a Railway-hosted lookalike of GitHub, not a GitHub-owned domain. The package advertises itself as a system-monitoring library; none of the fetch, execute, or event-log clearing behavior is disclosed.
Source: kam193 (e01fd8b85a9d6bdfbefb70261f49496f8a6c224d98da6400ef0ca06f18404d27)
During import, malicious code is started in the background. On Windows, it downloads and installs a malicious executable, and disguises it as a system utility. After installation, the code attempts to cover its tracks by cleaning logs and removing downloaded files. The installed executable is a heavily obfuscated malware with multiple sandbox evasion techniques, finally running an infostealer identifying itself as "Snow Stealer". It collects at least browser data and modifies cryptowallet applications.
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Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-08-envprovision
Reasons (based on the campaign):
- infostealer
- Downloads and executes a remote executable.
- obfuscation
- action-hidden-in-lib-usage
- exfiltration-browser-data
- The package contains code to detect if it is running in a sandbox environment.
- exfiltration-crypto
- malware
- covering-tracks
- persistence
Indicators of compromise
Shown defanged and not clickable. Search any indicator to find other packages using it.
Domains
- env-metadata[.]up[.]railway[.]app other packages →
- ivahook[.]online other packages →
URLs
- hxxps://env-metadata[.]up[.]railway[.]app/vbv_a8F3kL92xQ/manifest[.]json other packages →
- hxxps://env-metadata[.]up[.]railway[.]app/vbv_a8F3kL92xQ/appsetupw[.]exe other packages →
- hxxps://energy-total[.]up[.]railway[.]app/vbv_a8F3kL92xQ/manifest[.]json other packages →