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In November 2010, the press reported that the rootkit had evolved to the point that it was bypassing the mandatory kernel-mode driver signing requirement of 64-bit editions of Windows 7. It did this by subverting the master boot record, [8] which made it particularly resistant on all systems to detection and removal by anti-virus software.
GMER is a software tool written by a Polish researcher Przemysław Gmerek, for detecting and removing rootkits. [1] [2] It runs on Microsoft Windows and has support for Windows NT, 2000, XP, Vista, 7, 8 and 10. With version 2.0.18327 full support for Windows x64 is added. [3] [4] [5]
The first malicious rootkit for the Windows NT operating system appeared in 1999: a trojan called NTRootkit created by Greg Hoglund. [9] It was followed by HackerDefender in 2003. [1] The first rootkit targeting Mac OS X appeared in 2009, [10] while the Stuxnet worm was the first to target programmable logic controllers (PLC). [11]
A secure file deleter is included. Spybot-S&D was not originally intended to replace but complement anti-virus programs (prior to v. 2.1 ' Spybot +AV '), but it does detect some common trojans and rootkits. A free-standing rootkit finder, RootAlyzer, is available. [3]
rkhunter (Rootkit Hunter) is a Unix-based tool that scans for rootkits, backdoors and possible local exploits. [1] It does this by comparing SHA-1 hashes of important files with known good ones in online databases, searching for default directories (of rootkits), wrong permissions, hidden files, suspicious strings in kernel modules, and special tests for Linux and FreeBSD. rkhunter is notable ...
However, because a Windows Kernel is thread based and not process based, pointers can be freely modified without any unintended effects. [1] By modifying linked list pointers to wrap around the rootkit process itself, the rootkit becomes invisible to the Windows event viewer and any system integrity applications that rely on this list.
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