What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is PUA:Win32/InstallBrain infection?

In this post you will certainly discover regarding the meaning of PUA:Win32/InstallBrain and its negative influence on your computer system. Such ransomware are a form of malware that is clarified by on the internet fraudulences to demand paying the ransom money by a sufferer.

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In the majority of the instances, PUA:Win32/InstallBrain infection will instruct its victims to start funds move for the objective of reducing the effects of the changes that the Trojan infection has introduced to the sufferer’s device.

PUA:Win32/InstallBrain Summary

These adjustments can be as follows:

  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files found on the victim’s hard disk — so the sufferer can no more make use of the data;
  • Preventing routine accessibility to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


One of the most normal channels where PUA:Win32/InstallBrain Ransomware are infused are:

  • By ways of phishing e-mails;
  • As a consequence of individual ending up on a resource that hosts a malicious software application;

As quickly as the Trojan is successfully injected, it will either cipher the data on the sufferer’s computer or stop the device from working in a proper manner – while additionally placing a ransom money note that discusses the demand for the targets to impact the repayment for the objective of decrypting the files or bring back the data system back to the initial condition. In the majority of circumstances, the ransom note will certainly turn up when the client reboots the COMPUTER after the system has actually already been harmed.

PUA:Win32/InstallBrain circulation networks.

In different edges of the globe, PUA:Win32/InstallBrain grows by jumps and also bounds. However, the ransom notes and methods of obtaining the ransom money amount might vary depending on specific neighborhood (regional) setups. The ransom notes as well as techniques of obtaining the ransom amount might vary depending on certain local (regional) settings.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software.

    In specific areas, the Trojans usually wrongfully report having actually spotted some unlicensed applications enabled on the target’s device. The sharp then demands the individual to pay the ransom money.

    Faulty declarations about illegal web content.

    In countries where software program piracy is less prominent, this approach is not as efficient for the cyber scams. Conversely, the PUA:Win32/InstallBrain popup alert may wrongly claim to be deriving from a police establishment as well as will certainly report having located child porn or other unlawful information on the tool.

    PUA:Win32/InstallBrain popup alert may wrongly assert to be deriving from a legislation enforcement institution and will report having located kid pornography or other prohibited information on the device. The alert will in a similar way contain a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 19E52FBD
md5: 138cd2ff4844c40f1fc27f9abc51de2e
name: 138CD2FF4844C40F1FC27F9ABC51DE2E.mlw
sha1: 1641ed9d97101eb689f93d35cf2615f872d48c09
sha256: 998d46e87d80964632cbe53aa7a6ae30408ab8ec12bf2312513fbf7dd87c352c
sha512: cbf273592d43ea3628c546533a6e1239aade124495bdee98ffc3200ce1eedf79dcf239a27f9d988dde790e4389be9d87338bfebf1f4fded827a6ce7838bc2a38
ssdeep: 12288:y4Is375IwbYPOp1Bv36tOZ8gK7Rt1IQYmaoJRuC5Ef5qlRI2I9dOuPM/kukbzmVn:yE2Gv0W81IYjyZwrI2qjqkvKn
type: PE32 executable (Unknown subsystem 0xa0d) Intel 80386, for MS Windows

Version Info:

0: [No Data]

PUA:Win32/InstallBrain also known as:

GridinSoft Trojan.Ransom.Gen
ALYac Application.Bundler.InstallBrain.A
Sangfor Trojan.Win32.Save.a
Cybereason malicious.f4844c
Baidu Win32.Adware.Generic.ci
Cyren W32/Heuristic-MU3!Eldorado
Symantec Trojan.Gen.2
APEX Malicious
Avast Win32:InstallBrain-AE [PUP]
BitDefender Application.Bundler.InstallBrain.A
MicroWorld-eScan Application.Bundler.InstallBrain.A
Ad-Aware Application.Bundler.InstallBrain.A
Sophos Mal/Generic-S
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.VirRansom.jc
FireEye Generic.mg.138cd2ff4844c40f
Emsisoft Application.Bundler.InstallBrain.A (B)
eGambit Unsafe.AI_Score_100%
Antiy-AVL Trojan/Generic.ASMalwFH.45179B0
Microsoft PUA:Win32/InstallBrain
GData Application.Bundler.InstallBrain.A
MAX malware (ai score=97)
Malwarebytes Malware.AI.1528177604
AVG Win32:InstallBrain-AE [PUP]
Paloalto generic.ml

How to remove PUA:Win32/InstallBrain ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

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/InstallBrain 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/InstallBrain 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/
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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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