Remove SYSTEM1.SYS virus (Removal Guide)

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What is SYSTEM1.SYS?

SYSTEM1.SYS is considered as malicious program (malware).

SYSTEM1.SYS detected as TROJ.SYSTEM1.SYS.
SYSTEM1.SYS actively resists detection and employs a number of techniques to ensure that you cannot remove SYSTEM1.SYS from infected computers.

Technical Information:

Full path on a computer= %WINDIR%\TEMP\SYSTEM1.SYS

How SYSTEM1.SYS got on your computer?

Phishing is the most common way for malware to infect computers.
It could be a fake email message that appears to be originated from Microsoft Customer Service, eBay, PayPal, Amazon, or even your bank or insurance company.
Fake emails that appear to come from the police, the FBI and other government entities were also reported.

SYSTEM1.SYS could also infect your computer by exploiting a security vulnerability of your Web browser or one of its plugins.
If this is the case, SYSTEM1.SYS would be injected into a Web page, and could get to your PC when you visited a malicious or hacked Web site.

SYSTEM1.SYS can be distributed with legitimate software that is repackaged by the scammers.
It could be downloaded from warez Web sites or download archives.

How do you know you have SYSTEM1.SYS on my computer?

SYSTEM1.SYS works in background. It does not appear as a window, does not have a shortcut.
SYSTEM1.SYS hides its existence from your eyes.

You have 2 ways to remove SYSTEM1.SYS:

You have 2 ways

1. Remove Automatically.
2. Remove Manually.

Why I recommend you to use an automatic way?

You know only one virus name: "SYSTEM1.SYS", but usually you have infected by a bunch of viruses.
The UnHackMe program detects this threat and all others.
UnHackMe is quite fast! You need only 5 minutes to check your PC.
UnHackMe uses the special features to remove hard in removal viruses. If you remove a virus manually, it can prevent deleting using a self-protecting module. If you even delete the virus, it may recreate himself by a stealthy module.
UnHackMe is small and compatible with any antivirus.
UnHackMe is fully free for 30-days!

Here’s how to remove SYSTEM1.SYS virus automatically:

STEP 1: Install UnHackMe (1 minute)

STEP 2: Scan for malware using UnHackMe (1 minute)

STEP 3: Remove SYSTEM1.SYS virus (3 minutes)

So it was much easier to fix such problem automatically, wasn't it?
That is why I strongly advise you to use UnHackMe for remove SYSTEM1.SYS redirect or other unwanted software.

How to remove SYSTEM1.SYS manually:

STEP 1: Check all shortcuts of your browsers on your desktop, taskbar and in the Start menu. Right click on your shortcut and change it's properties.

http://…

You can see SYSTEM1.SYS or another web site at the end of shortcut target (command line). Remove it and save changes.

In addition, check this command line for fake browser's trick.
For example, if a shortcut points to Google Chrome, it must have the path:
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe.
Fake browser may be: …\Appdata\Roaming\HPReyos\ReyosStarter3.exe.
Also the file name may be: “chromium.exe” instead of chrome.exe.

STEP 2: Investigate the list of installed programs and uninstall all unknown recently installed programs.

check installed programs to uninstall

STEP 3: Open Task Manager and close all processes, related to SYSTEM1.SYS in their description. Discover the directories where such processes start. Search for random or strange file names.