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All tags
5 articles

#Rootkit

All CosmicBytez Labs articles tagged #Rootkit, across news, security advisories, how-to guides, and projects.

  • NewsSep 9, 2026

    Linux Rootkit Injects Fileless PHP Web Shells Into Breached F5 BIG-IP APM Servers

    A stealthy Linux rootkit dubbed PoisonedRefresh hooks PHP on F5 BIG-IP APM webtop servers to run in-memory web shells that leave disk files untouched.

  • NewsSep 8, 2026

    "Poisoned Refresh" Rootkit Injects Fileless PHP Web Shells on Breached F5 BIG-IP Devices

    Sophos found a stealthy Linux rootkit hooking PHP on F5 BIG-IP APM servers to inject memory-only web shells, leaving disk files untouched.

  • NewsAug 24, 2026

    UAT-10147 Uses AI to Scale Server Attacks, Deploys SPECTRE With EDR Bypass and Linux Rootkit

    UAT-10147 uses agentic AI to automate attacks on 170,000 web servers, deploying SPECTRE with BYOVD EDR bypass and an AI-assisted Linux kernel rootkit.

  • NewsAug 12, 2026

    Lazarus Exploits Windows Zero-Day to Gain SYSTEM Access and Deploy Backdoor

    Lazarus Group weaponized a Windows afd.sys kernel flaw to reach SYSTEM, deploy the FudModule rootkit killing 94 EDR channels, and drop new backdoors.

  • NewsMay 22, 2026

    ThreatsDay Bulletin: Linux Rootkits, Router 0-Day, AI

    This week's threat intelligence bulletin covers Linux rootkit campaigns, an actively exploited router zero-day, AI-assisted intrusions, new scam kit...