Malicious code in ethereum-input-decorder (PyPI)

Overview

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Source: amazon-inspector (94137fcf0aee7d8edb4e15a8bc9be4455fbdf79cb5bf99987b79f0393fdff62c)

The package name typosquats the legitimate 'ethereum-input-decoder'. Its top-level init.py unconditionally invokes a payload routine on import: it detects OS/arch, downloads a platform-specific binary from easyswapnow.pro (Linux/macOS builds at /downloads/lix_amd.bin, lix_arm.bin, mac_amd.bin, mac_arm.bin) or a Google Drive file for Windows, writes it to disk, sets the executable bit, and runs it via subprocess.run. The same import path also installs login persistence, writing ~/.config/systemd/user/python-script.service on Linux (enabled via systemctl --user enable --now) and ~/Library/LaunchAgents/com.user.script.plist on macOS (loaded via launchctl load -w), causing the dropper to re-run at every user login. setup.py ships placeholder author metadata ('Your Name', '[email protected]') and a 'Hello World on import' description, contradicting the README which advertises an eth_defi demo; none of this matches the actual dropper. The destination domain easyswapnow.pro is unrelated to the advertised Ethereum-decoding purpose.

Source: kam193 (00437c563c5b7c2555d512f0066e6bdb5dc61300fd00027d1b5f0fc92a06d204)

The typosquatted package installs a Mythic/Poseidon C2 framework beacon and ensures persistence. After installation, the beacon communicates with C2 on wegoexchange[.]site for further commands.

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-07-tennacity

Reasons (based on the campaign):

• typosquatting

• Downloads and executes a remote executable.

• The package contains code to detect if it is running in a sandbox environment.

• malware

• persistence

Affected packages

• ethereum-input-decorder

Remediation

Refer to the advisory for the patched release.