Prab: CSV import

2024-05-19T18:54:30Z

CSV import

New page

[[file:RootkitRevealer.png|thumb|left]] [[file:CPU_ring_scheme.svg|thumb|left]] [[file:Rkhunter_on_Mac_OS_X.png|thumb|right]] '''Rootkit'''

A '''rootkit''' is a type of [[malware]] designed to gain unauthorized access to a computer system and maintain privileged access while hiding its presence. Rootkits are often used by [[cybercriminals]] to control systems, steal data, or deploy additional malicious software.

==History==
The term "rootkit" originates from the [[Unix]] operating system, where "root" refers to the highest level of access privileges, and "kit" refers to the software components that implement the tool. Rootkits have evolved significantly since their inception, becoming more sophisticated and harder to detect.

==Types of Rootkits==
Rootkits can be classified based on their level of operation within the system:

* '''User-mode rootkits''': These operate at the [[user mode]] level, intercepting system calls and altering standard system behavior.
* '''Kernel-mode rootkits''': These operate at the [[kernel mode]] level, providing deeper access and control over the system. They are more difficult to detect and remove.
* '''Bootkits''': These infect the [[boot sector]] or [[Master Boot Record (MBR)]], allowing them to load before the operating system itself.
* '''Firmware rootkits''': These target the firmware of hardware components, such as the [[BIOS]] or [[UEFI]], making them extremely persistent and difficult to remove.
* '''Hypervisor rootkits''': These create a [[virtual machine]] layer beneath the operating system, intercepting hardware calls and controlling the system from below the OS level.

==Detection and Removal==
Detecting rootkits can be challenging due to their ability to hide their presence. Common detection methods include:

* '''Signature-based detection''': Using known patterns of rootkits to identify them.
* '''Heuristic/behavioral detection''': Monitoring system behavior for anomalies that may indicate a rootkit.
* '''Integrity checking''': Comparing current system files and configurations against known good states.
* '''Memory dump analysis''': Analyzing the system's memory for hidden processes or modules.

Removing rootkits often requires specialized tools and techniques, such as:

* '''Booting from a clean medium''': Using a trusted [[Live CD]] or [[USB drive]] to scan and clean the infected system.
* '''Reinstalling the operating system''': In severe cases, a complete reinstallation may be necessary to ensure the rootkit is fully removed.

==Prevention==
Preventing rootkit infections involves several best practices:

* '''Regular updates''': Keeping the operating system and all software up to date with the latest security patches.
* '''Antivirus software''': Using reputable [[antivirus]] and [[anti-malware]] solutions to detect and block rootkits.
* '''User education''': Training users to recognize and avoid common attack vectors, such as [[phishing]] emails and malicious downloads.
* '''Least privilege principle''': Limiting user privileges to the minimum necessary to reduce the impact of potential infections.

==Notable Rootkits==
Several high-profile rootkits have been discovered over the years, including:

* '''Sony BMG rootkit''': A controversial rootkit installed by [[Sony BMG]] on their music CDs to prevent copying, which inadvertently exposed users to security risks.
* '''Stuxnet''': A sophisticated rootkit used to target and disrupt [[Iran]]'s nuclear program.

==See Also==
* [[Malware]]
* [[Computer virus]]
* [[Trojan horse (computing)]]
* [[Spyware]]
* [[Adware]]
* [[Cybersecurity]]

==References==
{{Reflist}}

==External Links==
{{Commons category|Rootkits}}

[[Category:Malware]]
[[Category:Computer security]]
[[Category:Cybercrime]]
[[Category:Hacking (computer security)]]

{{Malware-stub}}

Rootkit - Revision history

Prab: CSV import