A new set of four malicious packages have been discovered in the npm package registry with capabilities to steal cryptocurrency wallet credentials from Ethereum developers. "The packages masquerade as legitimate cryptographic utilities and Flashbots MEV infrastructure while secretly exfiltrating private keys and mnemonic seeds to a Telegram bot controlled by the threat actor," Socket researcher Kush Pandya said in an analysis. The packages were uploaded to npm by a user named "flashbotts," with the earliest library uploaded as far back as September 2023. The most recent upload took place on August 19, 2025. The packages in question, all of which are still available for download as of writing, are listed below – @flashbotts/ethers-provider-bundle (52 Downloads) flashbot-sdk-eth (467 Downloads) sdk-ethers (90 Downloads) gram-utilz (83 Downloads) The impersonation of Flashbots is not coincidental, given its role in combating the adverse effects of Maximal Extractable Value (MEV) on the Ethereum network, such as sandwich, liquidation, backrunning, front-running, and time-bandit attacks. The most dangerous of the identified libraries is "@flashbotts/ethers-provider-bundle," which uses its functional cover to conceal the malicious operations. Under the guise of offering full Flashbots API compatibility, the package incorporates stealthy functionality to exfiltrate environment variables over SMTP using Mailtrap. In addition, the npm package implements a transaction manipulation…Read More