Implant.ARM_.iLOBleed.a-en.pdf

**Executive Summary:** This report presents a detailed technical analysis of Implant.ARM.iLOBleed.a, the first observed real-world rootkit in HP iLO firmware: it disables signature validation in the bootloader and kernel, injects a persistent UserLand ELF that intercepts firmware updates, fabricates upgrade UI output, maintains stealthy persistence, and can schedule repeated disk-wipe operations; the authors provide detection guidance (firmware dumps and UI differences), module-level indicators, and hardening recommendations for iLO.