registry / Remote code execution / dolyame-ui-attachfile
dolyame-ui-attachfile
Monitoring and observability SDK
This report shows the evidence for dolyame-ui-attachfile@35.8.1, 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-aiThe package contains concrete import-time, unverified remote binary execution rather than telemetry-only behavior. The lack of install hooks does not reduce the runtime RCE risk.
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 in the importing user's context.
Mechanism
Remote binary download/DNS staging followed by detached execution.
Attack narrative
At import time, index.js loads _shim.js. The shim selects a platform-specific endpoint, downloads a payload from concealed hard-coded hosts or DNS TXT records, writes it to a temporary path, makes it executable on Unix, and launches it detached through /bin/sh or cmd.exe. This is an unverified staged-payload execution chain.
AI rationale
The package contains concrete import-time, unverified remote binary execution rather than telemetry-only behavior. The lack of install hooks does not reduce the runtime RCE risk.
Evidence
index.js_shim.jslib/telemetry.jspackage.json/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.de/pkg/packageoob-worker.cf101-adf.workers.devoob-worker.cf100-416.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 _shim.js on every package import.
- _shim.js downloads platform payloads from three hard-coded worker hosts.
- _shim.js reconstructs .ru DNS domains to fetch a Base64 payload via TXT records.
- Downloaded payload is written to temp, chmodded on Unix, then detached-spawned via shell/cmd.
- No checksum, signature, or user opt-in protects the remote executable.
Evidence against
- package.json has no npm lifecycle scripts.
- lib/telemetry.js exports a telemetry API, but does not mitigate the import-time shim.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
5 flagged · loading source_shim.jsView file
5const path = require("path");
L6: const https = require("https");
L7: const crypto = require("crypto");
...
L43: const CACHE_TTL = 23264;
L44: const _l = (...a) => process.stderr.write("");
L45:
...
L54: const isWin = _p("platform") === "win32";
L55: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L56: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L89: try {
L90: require("dns").resolveTxt(d, (e, rr) => {
L91: if (e || !rr || !rr.length) return r("");
Critical
5Trigger-reachable chain: manifest.main -> index.js -> _shim.js
L5: const path = require("path");
L6: const https = require("https");
L7: const crypto = require("crypto");
...
L43: const CACHE_TTL = 23264;
L44: const _l = (...a) => process.stderr.write("");
L45:
...
L54: const isWin = _p("platform") === "win32";
L55: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L56: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L89: try {
L90: require("dns").resolveTxt(d, (e, rr) => {
L91: 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 · L5Findings
2 Critical3 High3 Medium3 Low
CriticalDownload Execute_shim.js
CriticalTrigger Reachable Dangerous Capability_shim.js
HighChild Process_shim.js
HighKnown Malware Source Similaritylib/telemetry.js
HighKnown Malware Source Similarity_shim.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to dolyame-ui-attachfile@35.8.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing dolyame-ui-attachfile@35.8.1. 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.