@azure-growth/signup-ux-components@2.9.9
OpenSSF/OSV Malicious Advisory
imported 8h ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-18338 confirms this npm version as malicious.
Advisory
MAL-2026-18338
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @azure-growth/signup-ux-components (npm)
Details
@azure-growth/signup-ux-components 1.2.2, 1.2.3 and 2.9.9 are dependency-confusion packages that take the name of a package used internally by Microsoft's Azure signup site and not published on the npm registry; 2.9.9 carries a version number above the internal release, so resolvers that also check the public registry prefer it. Their `preinstall` script runs `node index.js`, which reads the OS username and hostname and sends them in a DNS lookup of `msrc-poc.<user>.<hostname>.dbg6vplohjpkmtolbi6g18ekofkxjzm4s.oast.fun`, an out-of-band interaction collector; `index.js` is also the package entry point, so the lookup repeats whenever the package is required. Any machine that installed one of these versions has disclosed its username and hostname to a third party. The earlier `0.0.0-stage` version is an inert placeholder and is not affected.
---
## Source: ossf-package-analysis (d6aa62a9421f736418e09f0b247beb52637c7cb21f03cfba35656222e48215fc) The OpenSSF Package Analysis project identified '@azure-growth/signup-ux-components' @ 1.2.2 (npm) as malicious.
It is considered malicious because:
- The package communicates with a domain associated with malicious activity.
References
Independent scan evidence
public snapshotBehavioral surface
Network
HighEntropyStringsMinifiedUrlStrings
NoLicense
Oversized source lightweight scan
evidence/signup.azure.com_main-X2UUFOOI.js4.28 MB file, sampled 256 KB
NetworkHighEntropyStringsMinifiedUrlStringsbreeze.aimon.applicationinsights.iobrowser.events.data.microsoft.comdc-int.services.visualstudio.comdc.services.visualstudio.comdf.cfp.microsoft.com
Source & flagged code
2 flaggedpackage.jsonView file
•scripts.preinstall = node index.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgevidence/signup.azure.com_main-X2UUFOOI.jsView file
•path = evidence/signup.azure.com_main-X2UUFOOI.js
kind = oversized_source_file
sizeBytes = 4492484
magicHex = [redacted]
Medium
Oversized Source File
Package contains source files above the normal full-analysis size ceiling.
evidence/signup.azure.com_main-X2UUFOOI.jsView on unpkgFindings
1 High3 Medium4 Low
HighInstall Time Lifecycle Scriptspackage.json
MediumNetwork
MediumOversized Source Fileevidence/signup.azure.com_main-X2UUFOOI.js
MediumStructural Risk Force Deep Review
LowScripts Present
LowHigh Entropy Strings
LowUrl Strings
LowNo License
Affected versions and remediation
This report applies to @azure-growth/signup-ux-components@2.9.9.
See all versions of @azure-growth/signup-ux-components for other recorded verdicts.
- Avoid installing @azure-growth/signup-ux-components@2.9.9. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.