ZeroAccess

ZeroAccess is a sophisticated kernel-mode rootkit that is rapidly becoming one of the most widespread threats in the current malware ecosystem. ZeroAccess’ ability to run on both 32-bit and 64-bit versions of Windows, resilient peer-to-peer command and control infrastructure and constant updates to its functionality over time show that ZeroAccess is a modern threat capable of thriving on modern networks and modern Operating Systems.

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In this paper we will explore the ZeroAccess threat; from the distribution mechanisms used to spread it, through the installation procedure, memory residence and payload. Zum Download

By James Wyke, Senior Threat Researcher, SophosLabs UK