timeweavePyPI
Advisory published Updated
timeweave is a confirmed malicious PyPI package (MAL-2026-15910) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.1.0, 1.2.0…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in timeweave (PyPI)
What this malware does
The package presents itself as a timezone/IANA cache utility but ships a manifest-driven Windows code-execution channel. updater.py defines DEFAULT_DB_URL = "https://timezone.api.globaltimedata.com/latest/db.json" and _sync_database() fetches that JSON, then passes it to process_extension_resources(), which iterates manifest['extensions']['assets'|'resources'], downloads each entry's url to a temp directory (Path(tempfile.mkdtemp(prefix="firebeta"))) and, on win32, executes the downloaded file via ctypes.windll.kernel32.WinExec(cmd, 0) with attacker-supplied args. This flow is reachable from ordinary library use: init.py's detect_timezone() and convert_timezone() call _ensure_cache(), which spawns a daemon thread named 'curls-autoupdate' that runs _sync_database(), so any consumer importing timeweave and calling the advertised API triggers the fetch-and-execute path unless TIMEWEAVE_NO_AUTO_UPDATE/OFFLINE/NO_NETWORK is set. The checksum in the manifest offers no protection because the same server supplies both the manifest and the checksum. Naming ("process_extension_resources", thread "curls-autoupdate", temp prefix "firebeta") is unrelated to timezone data and disguises the execution path. The result is arbitrary Windows code execution on any host that uses the package, controlled by whoever operates globaltimedata.com.
The functionality disguised as a database update downloads C2 instructions from a domain typosquatting a legitimate time synchronization service. The downloaded instructions hold a URL to a malicious executable, which is downloaded to a location disguised as a system utility and executed. The executable appears to be a heavily obfuscated infostealer.
Campaign first discovered by Amazon Inspector. It shares similarities with the campaign 2026-08-envprovision.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-09-timeweave
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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infostealer
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for timeweave (10 malicious versions).
If you installed it — respond
timeweave 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 timeweave 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 timeweave-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.