Which versions of dc-repro are malicious?

The following npm versions of dc-repro are flagged malicious: 2.1.2. Treat any of these as compromised.

How do I remediate dc-repro if I installed it?

dc-repro establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

I already installed dc-repro — how do I know if it already compromised me?

If dc-repro was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is dc-repro part of a known attack campaign?

Yes — dc-repro is associated with the IN-MAL-2026-009603 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find dc-repro across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for dc-repro (version 2.1.2).

Malicious package

dc-repronpm

Advisory published Jul 9, 2026Updated Jul 9, 2026

dc-repro is a confirmed malicious npm package (MAL-2026-10102) that opens a backdoor for remote access (malicious version 2.1.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dc-repro (npm)

MAL-2026-10102

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall dc-repro

What this malware does

On npm install, postinstall.js issues an HTTP GET to a hardcoded bare-IP endpoint at http://130.49.177.51:18080/p/dc-20260627-yandex-geobase carrying the package name, version, and a campaign tag (bb-yandex-geobase-20260627). The beacon fires automatically as a lifecycle script with no user opt-in, confirming code execution inside the installer's environment and exposing the installer's source IP / network position to an attacker-controlled host over plain HTTP. The package additionally declares a dependency on yandex-geobase and labels its callback with that package name, consistent with a dependency-confusion probe targeting the yandex-geobase namespace. Installer impact: any machine that resolves and installs dc-repro silently emits a network callback to the hardcoded IP at install time.

Malicious versions

1 flagged

2.1.2

Indicators of compromise (SHA-256)

0b27530f3aa6f2f96c3aa77ffad048e51ee4479d60c81ce59687772b6985a99b

Detection & response playbook

Backdoor / remote access

Find it
Search your lockfiles and build artifacts for dc-repro (version 2.1.2).
If you installed it — respond
dc-repro establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If dc-repro was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. dc-repro on npm has been identified as a malicious package (version 2.1.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-009603

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks dc-repro-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Malware detection Runtime egress monitoring

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