Threat Management, Threat Management, Malware

Free software downloads infecting users with NiceHash cryptominer, warns researchers

Adversaries are using the lure of free online software downloads to infect unknowing victims with a customized version of cryptocurrency mining software from the NiceHash marketplace.

In a Dec. 21 Securelist blog post, Kaspersky Lab reports detecting 16 websites with Russian .ru top-level domains that offer free (or seemingly free) applications or software packages, including such titles as OpenOffice, Adobe Premiere Pro, CorelDraw, and PowerPoint. Approximately 200 of these various files were determined to secretly include the cryptominer as a component.

An analysis of one of these files, presented as a full version of ABBYY FineReader, determined that its folders contained not only the NiceHash miner itself, but also text files containing wallet details and the mining pool's address. It also contained a BAT script, compiled into a PE file named "system.exe," which initializes the miner's operation and retrieves a PowerShell script that assigns an ID to the infected computers and launches the actual mining operations. In this instance, zcash was the targeted cryptocurrency.

"The mining software that we analyzed, albeit incapable of inflicting any damage, can seriously impair your workstation's performance by hijacking its resources and making it work for somebody else," warns Kolesnikov in the blog post.
Bradley Barth

As director of multimedia content strategy at CyberRisk Alliance, Bradley Barth develops content for online conferences, webcasts, podcasts video/multimedia projects — often serving as moderator or host. For nearly six years, he wrote and reported for SC Media as deputy editor and, before that, senior reporter. He was previously a program executive with the tech-focused PR firm Voxus. Past journalistic experience includes stints as business editor at Executive Technology, a staff writer at New York Sportscene and a freelance journalist covering travel and entertainment. In his spare time, Bradley also writes screenplays.

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