Stephan Berger
Stephan Berger is the Head of Investigations for an Incident Response team at InfoGuard, a Swiss-based cybersecurity firm. With over a decade of experience investigating complex network compromises, he specializes in the technical intersection of offensive tradecraft and defensive forensics. Stephan is the author of the DFIR.ch technical blog and is a regular speaker at international security conferences, including FIRST, Troopers, and hack.lu. He holds a Bachelor’s degree in Computer Science and a Master’s degree in Engineering and is the founder of Malmium, a specialized technical training provider.
Session
For years, a persistent myth suggested that macOS was inherently immune to malware. Today, threat actors are aggressively shattering that illusion by deploying sophisticated initial access chains tailored to bypass macOS defenses. This talk provides a deep-dive analysis of how modern adversaries gain their first foothold on Apple hardware.
We will dissect the entire initial access pipeline, starting with Infection Vectors like deceptive Google Ads, malicious ClickFix campaigns, and sophisticated malvertising that trick users into lowering their guard. From there, we explore the Execution Phase, analyzing how attackers weaponize scripting languages, including traditional Bash and Python, as well as native AppleScript, Compiled AppleScript, Perl, and JavaScript for Automation (JXA).
Finally, we will examine the delivery mechanisms, contrasting the abuse of native Binaries (Mach-O, Platypus-packaged apps, and Electron frameworks) with the trojanization of Storage and Installer Formats (DMGs and PKGs).
Attendees will walk away with a technical understanding of contemporary macOS tradecraft, real-world attacker methodologies, and the insights needed to hunt for and defend against modern Mac-focused threats.