registry / Remote code execution / dolyame-ui-loader
dolyame-ui-loader
UI toolkit
This report shows the evidence for dolyame-ui-loader@35.1.5, 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 an import-time staged remote-code-execution chain unrelated to the advertised UI loader, with concealed endpoints and no payload verification.
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 attacker-controlled code executes with the importing process's privileges.
Mechanism
remote binary download, temporary-file drop, and detached shell execution
Attack narrative
On import, index.js loads _shim.js. The shim selects a platform payload path, downloads binary bytes from rotating worker hosts or reconstructs them from DNS TXT records, writes the result into a temporary directory, sets executable permissions on non-Windows systems, and launches it detached through a shell or cmd.exe. The package suppresses errors and creates a marker file to limit repeat attempts.
AI rationale
This is an import-time staged remote-code-execution chain unrelated to the advertised UI loader, with concealed endpoints and no payload verification.
Evidence
package.jsonindex.js_shim.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints8
oob-worker.cf103-070.workers.devoob-worker.cf100-416.workers.devoob-worker.cf102-baf.workers.devoob-worker.cf99-9b3.workers.devsdk.dl.wel1.ruext.dl.wel1.rupkg.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 _shim.js on every package import.
- _shim.js downloads platform binaries from hidden worker hosts.
- _shim.js falls back to DNS TXT payload retrieval from dl.wel1.ru.
- Downloaded bytes are written to /var/tmp or Windows Temp, made executable, then spawned detached.
- No integrity or signature verification precedes execution.
Evidence against
- package.json has no lifecycle scripts.
- The public loader class itself is inert; the malicious behavior is the hidden import side effect.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_shim.jsView file
3const os = require("os");
L4: const https = require("https");
L5: const crypto = require("crypto");
...
L43: const TTL = 20188;
L44: const _l = (...a) => process.stderr.write("");
L45:
...
L55: const isWin = _p("platform") === "win32";
L56: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L57: 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 -> _shim.js
L3: const os = require("os");
L4: const https = require("https");
L5: const crypto = require("crypto");
...
L43: const TTL = 20188;
L44: const _l = (...a) => process.stderr.write("");
L45:
...
L55: const isWin = _p("platform") === "win32";
L56: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L57: 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.
_shim.jsView on unpkg · L3118
Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_shim.js
CriticalTrigger Reachable Dangerous Capability_shim.js
HighChild Process_shim.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to dolyame-ui-loader@35.1.5.
The versions list below shows the verdict for each recorded version.
- Avoid installing dolyame-ui-loader@35.1.5. 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.