SvcStealer 2025, a new information-stealing malware, has emerged, primarily targeting sensitive data through spear-phishing email attachments. First discovered in January 2025, this malware is capable of harvesting a wide range of personal, financial, and system information, including user credentials, machine data, cryptocurrency wallets, and browser data. The malware follows a systematic approach, extracting data from various applications on the infected system, compressing it into a zip file, and then exfiltrating it to command and control (C2) servers.
SEQRITE researchers identified SvcStealer during routine threat-hunting operations. Written in Microsoft Visual C++, the malware uses advanced evasive techniques, including terminating monitoring processes and deleting traces of its activities. This allows it to avoid detection by security tools. Upon infection, the malware generates a unique identifier derived from the victim’s volume serial number, ensuring that only one instance of the malware runs at any given time.
SvcStealer targets specific applications, including cryptocurrency wallets across multiple browsers such as Chrome, Edge, and Brave. It also captures credentials from messaging platforms like Telegram and Discord and collects system information, such as running processes, and takes screenshots. Once the data is collected, the malware stores it in a uniquely generated folder under the ProgramData directory, compresses the folder into a zip file, and establishes a connection to its C2 servers to transmit the stolen data.
The malware uses HTTP POST requests with a Content-Type of “multipart/form-data” to transmit the data, disguising it as normal web traffic to avoid detection. To maintain persistence, SvcStealer continues to beacon to its C2 servers, awaiting further commands. These commands could involve downloading additional malicious payloads, expanding the threat’s capabilities. Security experts recommend implementing advanced endpoint protection and being vigilant when handling email attachments to defend against this evolving threat.
