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WhyMI so Sexy? WMI Attacks, Real-Time Defense, and Advanced Forensic Analysis - William Ballenthin, Claudiu Teodorescu, Matthew Graeber BSides Las Vegas 2015 (Hacking Illustrated Series InfoSec Tutorial Videos)

WhyMI so Sexy? WMI Attacks, Real-Time Defense, and Advanced Forensic Analysis
William Ballenthin, Claudiu Teodorescu, Matthew Graeber

Windows Management Instrumentation (WMI) is a remote management framework that enables the collection of host information, execution of code, and provides an eventing system that can respond to operating system events in real time. FireEye has recently seen a surge in attacker use of WMI to carry out objectives such as system reconnaissance, remote code execution, persistence, lateral movement, covert data storage, and VM detection. Defenders and forensicators have largely remained unaware of the value of WMI due to its relative obscurity and completely undocumented file format. After extensive reverse engineering, our team has documented the WMI repository file format in detail, developed libraries to parse it, and formed a methodology for finding evil in the repository. In this talk, we will take a deep dive into the architecture of WMI, reveal a case study in attacker use of WMI in the wild, describe WMI attack mitigation strategies, show how to mine its repository for forensic artifacts, and demonstrate how to detect attacker activity in real-time by tapping into the WMI eventing system. By the end of this talk, we will have convinced the audience that WMI is a valuable asset not just for system administrators and attackers, but equally so for defenders and forensic analysts.

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