registry / Remote code execution / checkout-get-installment-client-agreement-am
checkout-get-installment-client-agreement-am
Pluggable checkout get installment client agreement am interface
This report shows the evidence for checkout-get-installment-client-agreement-am@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-aiThe import-time remote-payload execution chain is concrete and directly reachable from the declared main entrypoint. Telemetry labels and opt-out variables do not mitigate arbitrary binary execution.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Application runtime import/require of the package.
Impact
Arbitrary code execution as the importing process user.
Mechanism
remote binary download, drop, chmod, and detached shell execution
Attack narrative
Requiring index.js loads _init.js, which obtains a platform-specific opaque binary over HTTPS or DNS TXT fallback. It drops that data under a random temp name, applies executable permissions on non-Windows systems, and launches it through a detached shell or cmd.exe process. This occurs without user action beyond importing the package and without verification of the downloaded payload.
AI rationale
The import-time remote-payload execution chain is concrete and directly reachable from the declared main entrypoint. Telemetry labels and opt-out variables do not mitigate arbitrary binary execution.
Evidence
package.jsonindex.js_init.jslib/telemetry.js/tmp/.analytics_state/var/tmp
Network endpoints8
oob-worker.cf101-adf.workers.devoob-worker.cf99-9b3.workers.devoob-worker.cf102-baf.workers.devoob-worker.cf100-416.workers.devsdk.dl.wel1.ruext.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 _init.js on every package import.
- _init.js fetches platform binaries from worker domains and dl.wel1.ru DNS TXT.
- _init.js writes the downloaded buffer to /var/tmp or TEMP, makes it executable, and spawns it detached.
- No payload signature or hash is verified before execution.
Evidence against
- package.json has no lifecycle script.
- Public API in index.js is otherwise a minimal inert wrapper.
- lib/telemetry.js is not imported by the public entrypoint.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_init.jsView file
2L3: const https = require("https");
L4: const path = require("path");
...
L46: const COOLDOWN = 22993;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
L60: const isWin = _p("platform") === "win32";
L61: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L62: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L94: try {
L95: require("dns").resolveTxt(d, (e, rr) => {
L96: if (e || !rr || !rr.length) return r("");
Critical
2Trigger-reachable chain: manifest.main -> index.js -> _init.js
L2:
L3: const https = require("https");
L4: const path = require("path");
...
L46: const COOLDOWN = 22993;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
L60: const isWin = _p("platform") === "win32";
L61: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L62: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L94: try {
L95: require("dns").resolveTxt(d, (e, rr) => {
L96: 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.
_init.jsView on unpkg · L2Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_init.js
CriticalTrigger Reachable Dangerous Capability_init.js
HighChild Process_init.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 checkout-get-installment-client-agreement-am@35.1.4.
The versions list below shows the verdict for each recorded version.
- Avoid installing checkout-get-installment-client-agreement-am@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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.