Aug 10, 2018

OSX.Calisto Trojan Virus Removal Guide

I saw OSX.Calisto Trojan virus on my Mac and had it removed with the system security tool. I don’t why, but the virus comes back. I tried the system tool many times and the virus never goes away. Anyone can help me delete OSX.Calisto Trojan virus completely?

Brief Information of OSX.Calisto Trojan Virus

OSX.Calisto is a nasty Trojan virus which ruins target systems and steals their all secret information. It is generated and distributed by cyber criminals to swindle precious information off innocent computer users and make lots of illegal profit. This virus is able to sneak into and damage your system silently. To stay on your PC for a long time, it disables your security program and firewall. After it is installed on your PC for period of time, it not only slows down PC speed and downgrades its performance, but also targets your valuable data. OSX.Calisto Trojan virus can bring more threat and unwanted program to make your PC useless. Therefore, we suggest you remove OSX.Calisto Trojan virus soon after you see it.

What can OSX.Calisto Trojan Virus Do?

Once installed, OSX.Calisto virus will start a series of malevolent activities on your PC. It brutally messes with your system files and settings. This Trojan can corrupt your legitimate programs and delete your important saved files without your permission. It alters your browser and even system settings to get more authorization. Icons of unknown video players and browsers appear on the desktop. Nasty browser extensions and plugins are installed. This is why some of your programs are not working and so many errors are generated on your system screen. Besides, OSX.Calisto opens a backdoor on the compromised computer to upload files, download files, execute files, steal keychains and steal cookies. Your system will be vulnerable for severe damage after it downloads other threats like Ransomware and spyware etc. It will secretly download various other harmful threats in your Mac and makes your system vulnerable for severe damage.
OSX.Calisto Trojan virus also establishes remote access to the compromised computer. It can easily create new registry entries for its automatic startup. Every time you turn on the PC, it runs automatically and starts its task. To let hackers access your system, enables remote login & screen sharing, adds permissions & remote login to all users and even adds its own account on your PC. Imaging a personal can conduct any activities like you on the machine, isn’t it scary? What’s worse, it is developed to monitor your activities. It can collect your personal as well as financial information by using keylogger techniques. It will be a disaster after it sends your details to hackers. You may lose your money or your confidential information may leak. You must stop OSX.Calisto Trojan virus.

Processing manual removal is supposed to have a certain level of computer literacy. If you are not sure how to start and are afraid of making any critical mistakes damaging the computer system, please live chat with YooCare Expert now.

Tips to Avoid Trojan Virus

  • Do not download free software from unknown websites;
  • You should always select Custom Installation no matter what application you are going to install;
  • Uncheck hidden options which attempt to install additional programs you never need;
  • Scan all your downloaded files and applications or attachments of email before you open them;
  • You should Never open any attachments of unknown or spam emails;
  • Do not visit suspicious adult/porn websites;
  • Never try to update any app from nonofficial websites.
  • Manual Removal Guide:

    This malicious Trojan virus  can install itself into the computer system without your consent and awareness. It makes your computer work slowly and implants other nasty infections into the computer. To make things worse, this Trojan is a tool for the cyber criminals to invade the infected computer to steal your information. It is recommended to remove it as quickly as possible. Users can follow the manual guide here to have it removed instantly.

    1. End Relevant Processes

    (1). Press Ctrl+Shift+Esc together to pop up Windows Task Manager, click Processes tab

    Windows Task Manager

    *For Win 8 Users:

    Click More details when you see the Task Manager box

    Win 8 Task Manager

    And then click Details tab

    Details Tab in Win 8 Task Manager

    (2). Find out and end the processes of Trojan: OSX.Calisto Trojan virus

    2. Show Hidden Files

    (1). Click on Start button and then on Control Panel

    (2). Click on Appearance and Personalization

    (3). Click on Folder Options

    (4). Click on the View tab in the Folder Options window

    (5). Choose Show hidden files, folders, and drives under the Hidden files and folders category

    (6). Click OK at the bottom of the Folder Options window

    *For Win 8 Users:

    Press Win+E together to open Computer window, click View and then click Options

    View in Computer Window

    Click View tab in the Folder Options window, choose Show hidden files, folders, and drives under the Hidden files and folders category

    View Tab in Folder Options Window

    3. Delete Relevant Registry Entries and Files

    (1). Delete the registry entries of Trojan: OSX.Calisto Trojan virus through Registry Editor

    Press Win+R to bring up the Run window, type “regedit” and click “OK”

    While the Registry Editor is open, search and delete the related registry entries

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\[RANDOM CHARACTERS].exe

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run ‘Random’

    (2). Find out and remove the associated files




    Video Shows You How to Safely Modify Windows Registry Editor:


    Presence of OSX.Calisto is a great risk for your entire system. Victims will experience various critical issues such as data loss, hard drive corruption, corruption in important application and many more. Gradually, it makes your system very slow and unresponsive. You hardly can use it to check email or play a video smoothly. This Trojan virus can open backdoor on your system and provide remote access to cyber crooks. It is adequate of connecting to enrolled websites for the download of noxious programs inclusive of online gaming Trojans, nasty advertising programs, back doors, which would damages to the target system easily. The most horrible thing is that it is designed to steal and transfer your confidential information to the hackers. Hence, we suggest you get rid of OSX.Calisto Trojan virus as soon as possible. We have to tell you that it is not going to be an easy task to remove this notorious malware infection from infected system. It is tricky and hides itself deep among your system files. Besides, it has same executed files with different names. Even though you deleted one of them, others can be installed and work again. There are two methods to remove OSX.Calisto Trojan virus completely. You can install an advanced antivirus application to get the virus off your system. Please note that not all antiviruses are able to delete this virus. Kaspersky Lab, Norton, McAfee, Panda Security and MacKeeper etc. are recommended due to their high detecting rate and advanced malware protection. Besides, you can remove the virus manually. Manual removal needs certain computer skill. If you are not good at computer, virus removal tool is suggested. If you refuse to install a piece of software, simply contact the computer experts for help. Take action right now. Never let the harmful virus stay on your PC and steal your sensitive information.
    If you have no idea of how to process the manual removal, please contact experts from YooCare Online Tech Support for further assistance.

    Published by & last updated on August 10, 2018 7:11 am

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