Which versions of async-substrate-interface-sub are malicious?

The following PyPI versions of async-substrate-interface-sub are flagged malicious: 1.5.156, 1.5.157. Treat any of these as compromised.

How do I remediate async-substrate-interface-sub if I installed it?

Remove async-substrate-interface-sub from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed async-substrate-interface-sub — how do I know if it already compromised me?

If async-substrate-interface-sub 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 async-substrate-interface-sub part of a known attack campaign?

Yes — async-substrate-interface-sub is associated with the RLMA-2026-00086 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 async-substrate-interface-sub across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for async-substrate-interface-sub (2 malicious versions).

Malicious package

async-substrate-interface-subPyPI

Advisory published Mar 18, 2026Updated Mar 19, 2026

async-substrate-interface-sub is a confirmed malicious PyPI package (MAL-2026-1894) that executes malicious code on install (malicious versions 1.5.156, 1.5.157). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in async-substrate-interface-sub (PyPI)

MAL-2026-1894

Immediate action

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

pip uninstall async-substrate-interface-sub

Malicious versions

2 flagged

1.5.1561.5.157

Indicators of compromise (SHA-256)

f36f43ffef4fd6a748e240fa6b8d918bc80077fa10ec83ec03310c67edba002d

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for async-substrate-interface-sub (2 malicious versions).
If you installed it — respond
Remove async-substrate-interface-sub from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If async-substrate-interface-sub 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. async-substrate-interface-sub on PyPI has been identified as a malicious package (versions 1.5.156, 1.5.157 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-00086

Credits

ReversingLabs · finder

Detect & block this

O3 blocks async-substrate-interface-sub-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

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