A sophisticated cyberattack has been reported, exploiting Microsoft’s OneDrive application through a technique known as DLL sideloading, allowing hackers to execute arbitrary code while evading detection. The attackers strategically place a malicious version.dll file in the same directory as OneDrive.exe, hijacking its process and maintaining persistence on compromised systems. By using advanced hooking techniques that manipulate Windows API calls, the malicious DLL operates invisibly, triggering exceptions to control execution flow without traditional modifications that could trigger security alerts. This incident underscores the urgent need for enhanced cybersecurity measures, including application whitelisting and monitoring of DLL behaviors, to protect trusted applications from such stealthy intrusions, reflecting broader vulnerabilities within digital infrastructure that could impact sensitive data security.