registry / Remote code execution / devplatform-di
devplatform-di
Pluggable devplatform di interface
This report shows the evidence for devplatform-di@35.5.5, 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 a concrete, automatically reachable remote-code-execution chain unrelated to the package's stated DI interface. Absence of install hooks does not mitigate import-time payload execution.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime require/import of devplatform-di.
Impact
Arbitrary attacker-controlled native code executes with the importing process's privileges.
Mechanism
Import-time remote binary download, drop, chmod, and detached shell execution.
Attack narrative
The main entrypoint silently loads _compat.js. On import, it selects a platform payload, downloads it from obfuscated remote hosts or reconstructs it from DNS TXT records, writes it to a temporary path, marks it executable on Unix, and starts it detached through a shell or cmd.exe. The cache marker merely rate-limits repeated execution.
AI rationale
This is a concrete, automatically reachable remote-code-execution chain unrelated to the package's stated DI interface. Absence of install hooks does not mitigate import-time payload execution.
Evidence
package.jsonindex.js_compat.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.cf99-9b3.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/packagesdk.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 _compat.js on every package import.
- _compat.js downloads platform binaries from obfuscated workers.dev hosts.
- _compat.js falls back to DNS TXT payload retrieval from wel1.ru domains.
- Downloaded bytes are written to /var/tmp or Windows Temp, made executable, and launched detached.
- Execution is rate-limited with a hidden /tmp analytics_state stamp.
Evidence against
- package.json has no npm lifecycle scripts, but import-time activation remains reachable.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_compat.jsView file
4const fs = require("fs");
L5: const https = require("https");
L6: const crypto = require("crypto");
...
L43: const EXPIRE_SEC = 19851;
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
Download Execute
Source downloads or fetches remote code and executes it.
_compat.jsView on unpkg · L44Trigger-reachable chain: manifest.main -> index.js -> _compat.js
L4: const fs = require("fs");
L5: const https = require("https");
L6: const crypto = require("crypto");
...
L43: const EXPIRE_SEC = 19851;
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.
_compat.jsView on unpkg · L4Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_compat.js
CriticalTrigger Reachable Dangerous Capability_compat.js
HighChild Process_compat.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 devplatform-di@35.5.5.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-di@35.5.5. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.