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Hidden rootkit is an open-source rootkit used for stealth in malware campaigns attributed in the provided content to the Chinese threat group Silver Fox, also known as Void Arachne. In the described campaign, it is delivered alongside Sainbox RAT via fake software websites advertising products such as WPS Office, Sogou, and DeepSeek, targeting Chinese-speaking Windows users. The infection chain uses malicious Chinese-language MSI installers that launch a legitimate executable, shine.exe, which side-loads a rogue libcef.dll. That DLL extracts shellcode from 1.txt and executes an additional DLL payload; the payload's .data section may contain a PE binary executed as a rootkit driver. The Hidden rootkit is described as hiding malware-related processes and Windows Registry keys to help attackers evade detection and maintain access. The campaign reflects Silver Fox's use of commodity RATs and publicly available rootkit tooling with minimal custom development.
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1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Open-source rootkit used alongside Sainbox RAT to hide attacker activity and/or maintain stealthy persistence.
Open-source kernel rootkit used to provide stealth by hiding malware-related processes and Windows Registry keys on compromised hosts.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.