envprovisionPyPI
Advisory published Updated
envprovision is a confirmed malicious PyPI package (MAL-2026-14389) that steals credentials and exfiltrates sensitive data (malicious versions 1.2.0, 1.3.0, 1.4.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in envprovision (PyPI)
What this malware does
envprovision 1.4.0 presents itself as an environment-diagnostics helper but its public check()/sync() API, on Windows, fetches a JSON manifest from a base64-obfuscated URL that decodes to https://env-metadata.up.railway.app/vbv_a8F3kL92xQ/manifest.json, downloads the referenced binary to a temp path, and executes it. TLS verification is disabled on both the manifest fetch and the binary download (ctx.check_hostname=False, ctx.verify_mode=ssl.CERT_NONE), so the payload can also be substituted by any on-path attacker. The dropped binary is invoked with NSIS silent-install flags (/S, /NCRC) built by character-list concatenation and hidden-window creation flags, then a follow-on syshelpear.exe is spawned detached (CREATE_NO_WINDOW|DETACHED_PROCESS) from a user-writable ProgramFiles/LOCALAPPDATA location as a persistence helper. After execution, wevtutil cl Application and wevtutil cl System are invoked to erase Windows event logs. The endpoint obfuscation, TLS-off fetch-and-execute of an opaque binary from a publisher-mismatched Railway subdomain, silent-install flag assembly, detached helper launch, and anti-forensic log clearing are inconsistent with the advertised diagnostics purpose and constitute an installer-side binary dropper with persistence.
Exported functions hide the malicious functionality. 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.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-08-envprovision
Reasons (based on the campaign):
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Downloads and executes a remote executable.
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action-hidden-in-lib-usage
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covering-tracks
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persistence
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The package contains code to detect if it is running in a sandbox environment.
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obfuscation
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malware
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infostealer
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exfiltration-browser-data
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exfiltration-crypto
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for envprovision (3 malicious versions).
If you installed it — respond
envprovision is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If envprovision was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks envprovision-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.