Threats Tagged 'ethereum smart contracts'

RemusStealer is a malware-as-a-service program exhibiting multiple similarities to LummaStealer, including anti-virtual machine checks, credential theft tactics, and Application-Bound Encryption bypass methods. A key distinction is RemusStealer's use of Ethereum smart contracts for C2 communications instead of Steam or Telegram dead drop resolvers. Written in Go, the stealer performs extensive system discovery, gathering information about antivirus products, hardware specifications, and operating systems. It employs hidden desktop environments to evade detection while launching Microsoft Edge and Brave browser processes on non-primary window stations to steal credential files. The malware establishes connections to suspicious domains ending in .shop or .biz and communicates with Ethereum-related infrastructure. This evolution demonstrates attackers' increasing sophistication in leveraging blockchain technology to masquerade malicious communications through smart contracts.

A Magecart campaign uses EtherHiding techniques to perform card-skimming on e-commerce platforms. Attackers compromise legitimate online storefronts, mainly WooCommerce, but also PrestaShop, Magento, and WordPress sites, injecting malicious loaders disguised as Google Tag Manager code. The skimming payloads are staged inside Ethereum blockchain smart-contract storage, making detection more difficult. Over 40 websites across 15 countries have been impacted since April 2026. The infrastructure involves 144 Sepolia contracts controlled by a single wallet, with 20 distinct contracts and skimmer-hosting domains identified. The malicious code appears as normal analytics but steals credit card data from shoppers.