Blockchain and Node.js abused by Tsundere: an emerging botnet

Securelist

November 20, 2025 at 10:00 AM

Actively Exploited

Overview

Kaspersky GReAT experts have identified the Tsundere botnet, which utilizes Node.js-based bots to exploit web3 smart contracts. The campaign poses a significant cybersecurity threat as it spreads through MSI installers and PowerShell scripts, indicating a sophisticated method of propagation.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Node.js, web3 smart contracts, MSI installers, PowerShell scripts
Action Required: Implement security measures to monitor and restrict the use of MSI installers and PowerShell scripts.
Timeline: Newly disclosed

Original Article Summary

Kaspersky GReAT experts discovered a new campaign featuring the Tsundere botnet. Node.js-based bots abuse web3 smart contracts and are spread via MSI installers and PowerShell scripts.

Impact

Node.js, web3 smart contracts, MSI installers, PowerShell scripts

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Implement security measures to monitor and restrict the use of MSI installers and PowerShell scripts. Regularly update and patch Node.js environments and web3 applications.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Exploit, Malware, Botnet, and 1 more.

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