How to remove Occamy from the operating system

Also Known As: Occamy virus
Type: Trojan
Damage level: Severe

What kind of malware is Occamy?

Occamy is a trojan-type virus detected by most anti-virus/anti-spyware suites. It is designed to be controlled remotely - the developer decides which actions Occamy performs.

Anti-virus/anti-spyware suites typically name this malware "Trojan:Win32/Occamy.B" or "Trojan:Win32/Occamy.C". Note also that Occamy's process ("nc.exe") is listed in Windows Task Manager, thus making it easier to detect.

Occamy malware

More about Occamy

As mentioned above, Occamy is controlled remotely by the developer. In each case, its behavior may differ. Most trojan-type viruses gather information, infiltrate other malware into the system, and connect victims' computers to various botnets.

Trojan-type viruses record information such as saved logins/passwords, mouse/keyboard activity, web browsing activity, and geo-locations.

This sensitive data is misused to generate revenue (via money transfers, online purchases, identity thefts, etc.) Some trojans are also capable of hijacking web cams and microphones to capture "embarrassing" moments (e.g., user masturbating, etc). Cyber criminals then use compromising photos/videos to blackmail victims.

As mentioned above, trojans are also likely to proliferate other malware. In most cases, trojans proliferate ransomware - a high-risk virus that encrypts data (or corrupts the system in other ways) and demands a ransom in exchange for reverting the changes.

Fortunately, most reputable anti-virus/anti-spyware suites are capable of detecting and removing Occamy malware. Therefore, if you believe that your computer is infected with Occamy, immediately perform a full system scan and eliminate all detected threats.

Threat Summary:
Name Occamy virus
Threat Type Trojan, Password stealing virus, Banking malware, Spyware
Symptoms Trojans are designed to stealthily infiltrate victim's computer and remain silent thus no particular symptoms are clearly visible on an infected machine.
Distribution methods Infected email attachments, malicious online advertisements, social engineering, software cracks.
Damage Stolen banking information, passwords, identity theft, victim's computer added to a botnet.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
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Similarities with other malware of this kind

There are dozens of trojan-type viruses, all of which are very similar. The list of examples includes (but it is not limited to) TrickBot, Adwind, Emotet, LokiBot, FormBook, and Pony

These viruses are developed by different cyber criminals, however, their behavior barely differs - all steal personal information. In summary, trojan-type viruses pose a significant threat to your privacy and Internet browsing safety and their presence can lead to serious privacy issues, significant financial loss, and high-risk computer infections.

How did trojans infect my computer?

Research shows that trojan-type viruses are commonly distributed using email spam campaigns (e.g., FedEx package, Important Documents IRS, HM Revenue & Customs Outstanding Amount, and many others).

 Cyber criminals send thousands of deceptive emails that are delivered with malicious attachments (JavaScript files, JAR files, MS Office documents, etc.) Once opened, these attachments stealthily download and install trojans. On rare occasions, trojans are distributed using the "bundling" method, and using fake updaters.

"Bundling" is essentially stealth installation of third party applications/malware together with regular (typically free) software. Apps/viruses are installed without users' consent.

Fake updaters infect the system by exploiting outdated software bugs/flaws or simply downloading and installing malware rather than updates. Note that most trojans target MS Windows users and, terefore, users of other platforms are safe.

How to avoid installation of malware?

The main reasons for computer infections are poor knowledge and careless behavior. Therefore, pay close attention when browsing the Internet and downloading/installing/updating software. Carefully analyze all received email attachments. If you have received files that are irrelevant or have been sent by a suspicious email address, do not open them.

You are also advised to download your software from official sources only, using direct download links. Third party downloaders/installers often include rogue apps, and thus should never be used. The same applies to software updates. You are strongly advised to keep installed applications up-to-date.

To achieve this, however, use implemented functions or tools provided by the official developer only. Having a legitimate anti-virus/anti-spyware suite installed and running is also paramount.

The key to computer safety is caution. If your computer is infected with the Occamy trojan, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate this malware.

Occamy trojan process ("nc.exe") in Windows Task Manager:

Occamy trojan in task manager

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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How to remove malware manually?

Manual malware removal is a complicated task - usually it is best to allow antivirus or anti-malware programs to do this automatically.

To remove this malware we recommend using Combo Cleaner Antivirus for Windows. If you wish to remove malware manually, the first step is to identify the name of the malware that you are trying to remove. Here is an example of a suspicious program running on a user's computer:

malicious process running on user's computer sample

If you checked the list of programs running on your computer, for example using task manager, and identified a program that looks suspicious, you should continue with these steps:

manual malware removal step 1 Download a program called Autoruns. This program shows auto-start applications, Registry, and file system locations:

screenshot of autoruns application

manual malware removal step 2Restart your computer into Safe Mode:

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button.

Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button.

In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":


manual malware removal step 3Extract the downloaded archive and run the Autoruns.exe file.

extract autoruns.zip and run autoruns.exe

manual malware removal step 4In the Autoruns application, click "Options" at the top and uncheck the "Hide Empty Locations" and "Hide Windows Entries" options. After this procedure, click the "Refresh" icon.

Click 'Options' at the top and uncheck 'Hide Empty Locations' and 'Hide Windows Entries' options

manual malware removal step 5Check the list provided by the Autoruns application and locate the malware file that you want to eliminate.

You should write down its full path and name. Note that some malware hides process names under legitimate Windows process names. At this stage, it is very important to avoid removing system files. After you locate the suspicious program you wish to remove, right click your mouse over its name and choose "Delete".

locate the malware file you want to remove

After removing the malware through the Autoruns application (this ensures that the malware will not run automatically on the next system startup), you should search for the malware file on your computer. Be sure to enable hidden files and folders before proceeding. If you find the filename of the malware, remove it.

searching for malware file on your computer

Reboot your computer in normal mode. Following these steps should remove any malware from your computer. Note that manual threat removal requires advanced computer skills. If you do not have these skills, leave malware removal to antivirus and anti-malware programs.

These steps might not work with advanced malware infections. As always it is best to prevent infection than try to remove malware later. To keep your computer safe, install the latest operating system updates and use antivirus software.

To be sure your computer is free of malware infections we recommend scanning it with Combo Cleaner Antivirus for Windows.

Frequently Asked Questions (FAQ)

My computer is infected with Occamy malware, should I format my storage device to get rid of it?

You do not have to format your storage device  to eliminate Occamy malware. It can be removed by following the steps provided in our guide above.

What are the biggest issues that malware can cause?

It depends on the type of malware. It can encrypt files, steal sensitive information (e.g., passwords, credit card details), launch DDoS attacks, inject other malware, etc.

What is the purpose of Occamy malware?

Occamy can be used for different purposes. Threat actors can use it to collect information, add a computer to a botnet, infect a computer with more malware, or for other malicious activities.

How did a malware infiltrate my computer?

Typically, malware like Occamy is delivered via email: cybercriminals send emails containing malicious attachments (or links) to trick recipients into downloading and executing malware. It is also common for malware to be distributed via fake installers for cracked software, unreliable sources for downloading software, or fake updaters.

Will Combo Cleaner protect me from malware?

Combo Cleaner can detect and eliminate almost all known malware from operating systems. High-end malware usually hides deep in the system. A computer must be scanned using a full scan to eliminate malware of this kind.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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