PUA:Win32/Vigua.A virus
Written by Robert Bailey

What is PUA:Win32/Vigua.A infection?

In this post you will certainly locate concerning the meaning of PUA:Win32/Vigua.A as well as its adverse influence on your computer system. This virus can be correctly identified as adware with several signs of browser hijacker.

Usually, the PUA:Win32/Vigua.A adware is injected into the victim’s system to show him/her the adververtisements, pop-up ads, and also substitute the search query results with the paid ones.

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PUA:Win32/Vigua.A Summary

These alterations can be as adheres to:

  • Attempts to connect to a dead IP:Port (1 unique times);
  • Presents an Authenticode digital signature;
  • A process attempted to delay the analysis task.;
  • Unconventionial binary language: Chinese (Simplified);
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary likely contains encrypted or compressed data;
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Changes the internal settings of the executable file of the browser by default;
Similar behavior
Related domains


One of the usual channels through which PUA:Win32/Vigua.A adware is infused are:

  • Malvertising on different web pages
  • Software bundling

Software bundling is a widespread practice among the virus developers. Users who hack the programs to make them usable without purchasing a license approve any offer to include another program to the pack, because they are gaining money in such a way. Check precisely the installation window for signs like “Advanced installation settings” or so. The ability to switch off the malware installation often hides under such items.

Avoiding the PUA:Win32/Vigua.A via advertisements is much easier. Clicking the ads, especially on unknown/untrustworthy sites is always a bad idea. Deal with this habit, and your PC usage will definitely become easier.

PUA:Win32/Vigua.A activity consequences.

After the successful injection, PUA:Win32/Vigua.A integrates into your web browser, and makes several changes to the browser settings. It literally embeds itself into the web browser, so every time you are searching for something, results will be full of irrelevant results, that was paid to PUA:Win32/Vigua.A to promote. Besides the promoted links in search results, you also get your search queries redirected to another search engine, for example, Bing or Yahoo. And the icing on the cake is excessive advertisements – banners and popups appear on the pages regardless of their real presence and ad blocking plugins installed.

Such a big number of disruptive ads, together with untrustworthy links among search results make the browser usage very uncomfortable. Moreover, weak systems may suffer the sensible lag spikes and freezes, because such amount of ads increase the hardware consumption. There is also a risk that you will get another malware, possibly more dangerous than PUA:Win32/Vigua is, after clicking the advertisements this virus shows to you.

Technical details

File Info:

crc32: A1E1E095
md5: 08862211cb28cc9f8cb03041644ddfa4
name: war3.exe
sha1: 6a72a8315147fdaf9eefbd60c83833de060f1aba
sha256: a436f01d3d5abb2d63d9ec5463c0c083546b939036e71163d2aba510958f8f20
sha512: 063bd36a79d2bdb2a95963bf3ce03591b779220682095e5edad469a11bf1bd4599d0533161a062eaa8bff10a0266c1da53c4637e32d61c5d8aa97a5a5381c03e
ssdeep: 12288:TmP/7pn0JRVb0O5vXoM2R2SvOR7qesfdYQ19yFc:TypnEAO5PoM2R2SvslB+yFc
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: x4f5cx8005x7248x6743x6240x6709 x8bf7x5c0ax91cdx5e76x4f7fx7528x6b63x7248
Comments: x817ex8bafqq
ProductName: x817ex8bafqq
FileDescription: x817ex8bafqq
Translation: 0x0804 0x04b0

PUA:Win32/Vigua.A also known as:

CrowdStrikewin/malicious_confidence_80% (W)
K7GWAdware ( 00501d5a1 )
K7AntiVirusAdware ( 00501d5a1 )
ESET-NOD32a variant of Win32/MBRlock.BA
AvastWin32:Evo-gen [Susp]
RisingRansom.MBRlock!1.B976 (CLOUD)
EmsisoftGeneric.Ransom.MBRLock.EDC44885 (B)
MAXmalware (ai score=86)
Endgamemalicious (high confidence)
CynetMalicious (score: 100)
SentinelOneDFI – Malicious PE
AVGWin32:Evo-gen [Susp]

How to remove PUA:Win32/Vigua.A virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for PUA:Win32/Vigua.A files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove PUA:Win32/Vigua.A you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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