registry / Remote code execution / dolyame-ui-mixins
dolyame-ui-mixins
interface elements
This report shows the evidence for dolyame-ui-mixins@35.1.4, the only known version.
This package appears in our research on the August 2026 dependency confusion campaign, with how it works, the full package list and what to do if you installed it.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis is concrete import-time remote payload execution unrelated to the advertised UI mixins package. The dormant telemetry module repeats the same downloader/launcher pattern, reinforcing intentional staging behavior.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime require/import of index.js.
Impact
Arbitrary code execution as the importing user's account.
Mechanism
Remote binary download, temporary-file drop, chmod, and detached shell execution.
Attack narrative
The main entrypoint suppresses errors while requiring _ext.js. On import, _ext.js fetches a platform-specific binary from hard-coded obfuscated hosts, falling back to DNS TXT payload reconstruction. It writes the payload to a temporary path, makes it executable on Unix, and launches it detached through /bin/sh or cmd.exe without validating its origin or contents.
AI rationale
This is concrete import-time remote payload execution unrelated to the advertised UI mixins package. The dormant telemetry module repeats the same downloader/launcher pattern, reinforcing intentional staging behavior.
Evidence
package.jsonindex.js_ext.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints7
oob-worker.cf103-070.workers.devoob-worker.cf100-416.workers.devoob-worker.cf102-baf.workers.devsdk.dl.wel1.ruext.dl.wel1.rupkg.dl.wel1.runet.dl.wel1.ru
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _ext.js on every package import.
- _ext.js downloads platform binaries from three obfuscated worker hosts.
- _ext.js can retrieve a payload via DNS TXT records from dl.wel1.ru domains.
- _ext.js writes the downloaded payload to /var/tmp or Windows Temp, chmods it, and starts it detached.
- No integrity/signature validation is performed before execution.
Evidence against
- package.json contains no npm lifecycle script.
- The exported mixin class itself is minimal, but its import triggers _ext.js.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_ext.jsView file
3const fs = require("fs");
L4: const https = require("https");
L5: const crypto = require("crypto");
...
L44: const MAX_AGE = 19963;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L57: const isWin = _p("platform") === "win32";
L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L59: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L90: try {
L91: require("dns").resolveTxt(d, (e, rr) => {
L92: if (e || !rr || !rr.length) return r("");
Critical
3Trigger-reachable chain: manifest.main -> index.js -> _ext.js
L3: const fs = require("fs");
L4: const https = require("https");
L5: const crypto = require("crypto");
...
L44: const MAX_AGE = 19963;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L57: const isWin = _p("platform") === "win32";
L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L59: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L90: try {
L91: require("dns").resolveTxt(d, (e, rr) => {
L92: if (e || !rr || !rr.length) return r("");
Critical
Trigger Reachable Dangerous Capability
A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.
_ext.jsView on unpkg · L3119
Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_ext.js
CriticalTrigger Reachable Dangerous Capability_ext.js
HighChild Process_ext.js
HighKnown Malware Source Similarity_ext.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to dolyame-ui-mixins@35.1.4.
The versions list below shows the verdict for each recorded version.
- Avoid installing dolyame-ui-mixins@35.1.4. 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.