How Do I Check my Computer for Rootkits?

Rootkit is a special kind of malicious software. Its function is to hide itself and specified files, processes, and network links on the installation target. It is more common that Rootkit is generally used in conjunction with other malicious programs such as Trojans and backdoors .

rootkit

Rootkit is a special

In the suspense of Chinese and foreign spy war films, one faction on both sides of the battle usually sends special agents to lurk in the opponent camp. The undercover man's good camouflage made his opponent unaware of it for a long time; in order to be able to lurk for a long time, he did not rush to take high-risk behaviors so as not to expose himself prematurely; Constantly obtain important intelligence and use its unique channels to transmit it back.

In a sense, this uninvited guest is the Rootkit-a program that resides in the target computer persistently and unawarely, manipulates the system, and collects data through hidden channels. The three elements of a rootkit are: hiding, manipulating, and collecting data.

The root term in "Rootkit" comes from the unix field. Because the unix host system administrator account is the root account, this account has the minimum security restrictions, has full control of the host and has administrator rights is called "root" this computer. However, being able to "root" a host does not mean that you can continue to control it, because it is entirely possible for the administrator to discover that the host has been compromised and take cleanup measures. So the original meaning of rootkits is "a set of tools that can maintain root privileges."

Simply put, Rootkit is a special

Rootkit was first used for goodwill, but later Rootkit was also used

Rootkit is a fancy program that has

For both SunOS and Linux

Obviously, you can protect your network from rootkits only if you make your network very secure so that attackers have nowhere to go.

Rootkits themselves do not affect the operation of computers like viruses or worms. Attackers can identify existing vulnerabilities on the target system. Vulnerabilities may include open network ports, unpatched systems, or systems with weak administrator passwords. After gaining access to the vulnerable system, an attacker could manually install a rootkit. This type of sneaky attack usually does not trigger automated network security control functions, such as intrusion detection systems.

Finding the rootkit is very difficult. There are packages that can detect rootkits. These software packages can be divided into two categories: signature-based checkers and behavior-based checkers. Signature (signature-based) checkers, such as most virus scanners, check whether the binary is a known rootkit. The behavior-based checker attempts to find the rootkit by finding some hidden elements that represent the main behavior of the rootkit. One popular behavior-based rootkit checker is Rootkit Revealer.

After the rootkit is found in the system, the remedies that can be taken are also limited. Because rootkits can hide themselves, you may not know how long they have been in the system. And you don't know what information the rootkit has done. The best way to find a rootkit is to wipe and reinstall the system. Although this method is severe, it is the only method that has been proven to completely remove rootkits.

An effective way to prevent rootkits from entering the system is to enable secure boot. You should also install virus scanners, update software regularly, install firewalls on hosts and networks, and strong password policies.