This week, the SonicWall Capture Labs threat research team investigated a sample of SteelFox malware.
This is bundled with “software activators” for JetBrains and Foxit PDF readers. During installation, they run as a service and use vulnerable signed Windows drivers to exploit and attack the kernel. Secondarily, cryptominers such as XMRig are run in memory via AppInfo, as well as network communications. The sample is detected as an executable without a packer or protector; however, the file entropy shows that it is, in fact, packed.
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Source: SonicWall
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