MalwarePublished 5 Aug 2026

cards-forms-clone-debit-clone (npm) · Malicious Code

Affects cards-forms-clone-debit-cloneSource GCVE Database

Malicious package : remove cards-forms-clone-debit-clone and rotate any secrets on hosts that installed it.

Data as of 5 Aug 2026, 15:43 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-12526

What to do

Remove cards-forms-clone-debit-clone from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmcards-forms-clone-debit-clone	Affected =35.8.6	Fixed in–

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Description

The npm package 'cards-forms-clone-debit-clone' version 35.8.6 contains malicious code that, upon require(), loads a script which reconstructs obfuscated command-and-control (C2) hostnames. It downloads a platform-specific binary to temporary directories under decoy filenames, sets executable permissions, and executes it without verifying the integrity of the downloaded file. The C2 communication and payload delivery are concealed using fragmented hostnames and fallback DNS-TXT queries. No official patch or remediation guidance is available.

Impact

The malicious package can execute arbitrary platform-specific binaries on the host system without user consent or verification, potentially leading to full system compromise. The obfuscated C2 communication and lack of integrity checks increase the risk of persistent and stealthy malware presence. This can result in data exfiltration, system manipulation, or further malware deployment.

Defensive guidance

Users should avoid using version 35.8.6 of the 'cards-forms-clone-debit-clone' npm package. Remove the package from affected environments and audit systems for presence of the dropped binaries and related network activity. Monitor for suspicious processes spawned from temporary directories with names matching 'dotnet_diag_<hex>.exe' or '.cache_<hex>'. Consider using trusted package sources and implement supply chain security measures.

Summary

This malicious npm package version 35.8.6 executes code that reconstructs endpoint hostnames from split string fragments to contact multiple obfuscated C2 servers hosted on *.workers.dev domains and fallback domains under dl.wel1.ru. It downloads a platform-specific binary (named 'dotnet_diag_<hex>.exe' on Windows or '.cache_<hex>' on POSIX systems) into temporary directories, sets executable permissions, and spawns the binary detached from the main process. The binary fetch URLs are unpinned and lack hash or signature verification, increasing risk. Telemetry-like strings and environment variable gating are used to conceal the true nature of the communication and payload. This behavior indicates a supply chain compromise or malicious package designed to execute arbitrary code on the host.

References

npmjs.com/package/cards-forms-clone-debit-clone/v/35.8.6 (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 5 Aug 2026, 15:43 UTC

Technical details

References

Community reviews