Ostap Malware

This page aims to help you remove Ostap. Our removal instructions work for every version of Windows.


Ostap is a Trojan Horse that can steal, corrupt, or delete personal data without the knowledge of the user. If not removed on time, an infection with Ostap can lead to corruption or loss of important data as well as to serious system damage.

Ostap Malware

The Ostap Malware will stealthily infect your computer.

In recent days, there has been an increase in the number of computers infected with Ostap. Our “How to Remove” team has been getting showered with requests from victims of this Trojan Horse infection to help the victims cope with it in the most effective way. That’s why we have come up with information on how to remove this Trojan and a step-by-step removal guide for every stage of the removal process. Before we go any further, however, we need to warn you that Ostap is a harmful piece of malware that can damage your computer in different ways. The methods of infection that this Trojan Horse can use are also numerous and that’s why we will try to point out some of them in order to help the web users protect their systems more effectively. Hopefully, the information that you will find on this page will help you locate and remove Ostap without any problems but in case you need assistance, don’t hesitate to use the professional removal tool we’ve linked below to effectively rid yourself of this hazardous threat.

What could a Trojan-based virus such as Ostap do?

The Trojan Horse infections are considered extremely dangerous and there is a good reason for that. These threats have the ability to operate stealthily and infect the computer of the user showing little to no symptoms. That’s why the victims usually do not even know that they have been compromised until some major damage occurs and the system begins to act strangely.

Before any visible symptoms occur, however, a threat like Ostap can secretly download onto your computer additional harmful software programs, such as different versions of Ransomware or Spyware.

Unfortunately, this is not the only thing a Trojan can do. The cybercriminals who create such infections can use them to manipulate your computer in many ways. They may gain remote access to the entire system and all the information that is stored on it, or they may steal sensitive data such as your credit and debit card numbers, your online accounts, or your digital identity. This can later enable the cyber criminals to perform cyber crimes on your behalf or access your bank accounts and drain them without your knowledge.

In many instances, the hackers may use a Trojan like Ostap to spy on you and watch everything that you do on your screen. They can remotely switch on and off all devices connected to your system, such as web cameras, microphones, speakers, etc., or launch specific programs and background processes without your knowledge.

With this being said, there is no doubt that you need to remove Ostap without losing time. If you are not a very tech-savvy person or you fear that you cannot deal with a Trojan Horse like this one on your own, arm yourself with a trusted security tool and use the detailed removal guide from this page to increase your chances of effectively deleting this malware.


Name Ostap
Type Trojan
Danger Level High (Trojans are often used as a backdoor for Ransomware)
Symptoms A Trojan infection may not show any visible symptoms of its presence in the system until a major damage occurs.
Distribution Method Spam, infected email attachments, fake ads, cracked software installers, torrents, pirated content.
Detection Tool

Ostap Malware Removal

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide

Ostap Malware

Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).

Ostap Malware


Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab. Try to determine which processes are dangerous. 

Ostap Malware

Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
This scanner is free and will always remain free for our website's users.
This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
Ostap Malware
Drag and Drop File Here To Scan
Ostap Malware
Analyzing 0 s
Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
    This scanner is based on VirusTotal's API. By submitting data to it, you agree to their Terms of Service and Privacy Policy, and to the sharing of your sample submission with the security community. Please do not submit files with personal information if you do not want them to be shared.

    After you open their folder, end the processes that are infected, then delete their folders. 

    Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 

    Ostap Malware

    Hold together the Start Key and R. Type appwiz.cpl –> OK.

    Ostap Malware

    You are now in the Control Panel. Look for suspicious entries. Uninstall it/them. If you see a screen like this when you click Uninstall, choose NO:

    Ostap Malware

    Ostap Malware

    Type msconfig in the search field and hit enter. A window will pop-up:

    Ostap Malware

    Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.

    • Remember this step – if you have reason to believe a bigger threat (like ransomware) is on your PC, check everything here.

    Hold the Start Key and R –  copy + paste the following and click OK:

    notepad %windir%/system32/Drivers/etc/hosts

    A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

    Ostap Malware

    If there are suspicious IPs below “Localhost” – write to us in the comments.

    Ostap Malware

    Type Regedit in the windows search field and press Enter.

    Once inside, press CTRL and F together and type the virus’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

    • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
      HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
      HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

    If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


    About the author


    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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