Fireeye, Inc.

Fireeye Security Holdings, Inc.

Atul Kabra

Udo Steinberg

Hirendra Rathor

Ratnesh Pandey

Japneet Singh

Julian Stecklina

According to one embodiment, a method detecting and mitigating a privilege escalation attack on an electronic device is described. The method involves operations by a user agent mode operating within a user space and a kernel driver mode operating within a kernel space. The kernel driver mode, in response to detecting an initial activation of a process being monitored, stores metadata associated with an access token. This metadata includes the initial token state information. Responsive to detecting an event associated with the process being monitored, the kernel mode driver extracts a portion of current state information for the access token for comparison to a portion of the stored token state information. Differences between content within the current state information and the stored token state information are used, at least in part, by the user agent mode to detect a privilege escalation attack.

Cyber-security system and method for detecting escalation of privileges within an access token

A computing device is described that comprises one or more hardware processors and a memory communicatively coupled to the one or more hardware processors. The memory comprises software that, when executed by the processors, operates as (i) a virtual machine and (ii) a hypervisor. The virtual machine includes a guest kernel that facilitates communications between a guest application being processed within the virtual machine and one or more virtual resources. The hypervisor configures a portion of the guest kernel to intercept a system call from the guest application and redirect information associated with the system call to the hypervisor. The hypervisor enables logic within the guest kernel to analyze information associated with the system call to determine whether the system call is associated with a malicious attack in response to the system call being initiated during a memory page execution cycle. Alternatively, the hypervisor operates to obfuscate interception of the system call in response to the system call being initiated during memory page read cycle.

System and method of threat detection under hypervisor control

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Bengaluru, India

Atul Kabra