lsass.exe – a system file that could act as a camouflage for malware
lsass.exe is a legitimate Windows process that is known to be the Local Security Authority Processis described. The lsass.exe file is originally located in the “C: \ WINDOWS \ SYSTEM32 \” directory and cannot be closed using the Task Manager. Terminating the task can result in various computer-related problems. It is therefore not advisable to do so. However, the file can also be used to camouflage malware. It is known that a process with the same filename was used to mine cryptocurrencies. The miner executes the process lsass.exe in the background of the system and pretends to be a legitimate program file. In the meantime, he is abusing system resources to mine cryptocurrencies. To make sure that lsass.exe is not malicious, it is highly recommended that it be checked.
|ASSIGNMENT||Miners / Trojans|
|POSSIBLE DANGERS||Can infect the system with malware and misuse the resources for mining|
|SYMPTOMS OF INFECTION||Unexpected behavior, high CPU usage, error messages, general sluggishness of the system|
|DISTANCE||Install Reimage to identify and delete lsass.exe|
The legitimate version of the file is a critical system component that should not be removed as it is responsible for managing important tasks such as:
- Enforcement of security policies,
- Verification of the user login on the Windows computer or server,
- Handling of password changes,
- Creation of access tokens.
However, if you find the file in a directory other than C: \ Windows \ System32, or if you find that the process is using a lot of CPU, it could be a sign that the computer is infected with malware. Unfortunately, cyber criminals often use the names of legitimate files to install and run their malware on your computer. It is therefore important to know the origin of the file and, in the worst case, to remove lsass.exe from the computer.
There have been a few cases where lsass.exe has turned out to be a miner. Such threats spread through various methods and the main purpose of the malware is to run its process in the background and impersonate a legitimate file. The legitimate process in this case is the Windows Local Security Authority Process, but imitation of this process does nothing of the kind.
The lsass.exe virus aims to mine digital currencies on the infected PC. During this process, the CPU and GPU become significantly overloaded. Because of this, the computer has stopped responding and crashes from time to time. As a result of these malicious activities, the device may even display error messages or blue screens.
Criminals have been found to impersonate the name lsass.exe by replacing the lowercase “l” with a capital “I”. In this way, inattentive computer users can be tricked fairly easily. You are likely to be infected if you notice the following symptoms:
- The computer is generally sluggish,
- Programs crash or do not respond,
- increased number of advertisements,
- Browser redirects to questionable pages,
- Error messages on the screen,
- Installation of unknown programs or browser extensions.
So, you may have caught a virus that works silently in the background, doing harmful actions. Although the real process is completely safe, the above issues can be caused by a corrupt version of the file. Or, maybe all you need to do is update your software or drivers and the problems will be resolved. However, to be on the safe side, you should run a full system scan with a reputable anti-malware tool. We recommend using Reimage and Malwarebytes . After the verification, you can proceed to lsass.exe removal if necessary.
A Single Click on an Infected Email Attachment Can lead to Infection
The real lsass.exe file is installed with the Windows operating system. The malicious file can get inside the computer in several ways, such as:
- When you open a malicious email attachment;
- if a virus-infected ad is tricked into installing counterfeit software or updates;
- when downloading illegal or cracked content;
- when surfing unsafe websites.
So do not download or open any suspicious email attachments from the spam folder. The folder is full of useless emails and often they are infected. Advertising or redirects are not quite as dangerous, but miners can still be behind it; and these are not good for the system.
It is therefore advised to be careful when browsing the Internet, and especially when downloading content from unknown sources. Always download software and updates from the trusted manufacturer’s website. In addition, do not rush the installation processes and watch out for unwanted additions.
Remove lsass.exe if it is detected as malicious
Before proceeding with the removal of lsass.exe, you need to make sure that the file is indeed malicious. This can be done by scanning the system with an anti-malware such as Reimage or Malwarebytes . If you accidentally delete a legitimate system file, your computer will not function properly. As a result, you will have to deal with various computer-related problems.
The security software will scan the system and, if necessary, remove lsass.exe along with other suspicious components. This allows you to diagnose the infection and, if necessary, remove it. Always keep your antivirus and anti-malware up to date so that you can avoid repeated infections in the future.