Written by Robert Bailey

What is Ransom.Koolova infection?

In this article you will find about the definition of Ransom.Koolova and also its unfavorable effect on your computer system. Such ransomware are a form of malware that is specified by on the internet fraudulences to require paying the ransom money by a victim.

GridinSoft Anti-Malware Review

It is better to prevent, than repair and repent!

When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
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Most of the cases, Ransom.Koolova infection will certainly instruct its victims to initiate funds transfer for the purpose of counteracting the modifications that the Trojan infection has presented to the victim’s device.

Ransom.Koolova Summary

These adjustments can be as adheres to:

  • Creates RWX memory;
  • Network activity detected but not expressed in API logs;
  • Ciphering the records situated on the target’s hard disk — so the target can no more use the information;
  • Preventing normal accessibility to the sufferer’s workstation;


The most typical networks where Ransom.Koolova Ransomware Trojans are infused are:

  • By means of phishing emails;
  • As a repercussion of user ending up on a source that holds a harmful software;

As quickly as the Trojan is successfully infused, it will certainly either cipher the data on the sufferer’s computer or stop the gadget from operating in a proper way – while also placing a ransom note that discusses the demand for the targets to impact the repayment for the function of decrypting the files or bring back the documents system back to the initial condition. In most circumstances, the ransom money note will certainly turn up when the client restarts the PC after the system has actually currently been harmed.

Ransom.Koolova distribution channels.

In different edges of the globe, Ransom.Koolova expands by jumps and bounds. Nevertheless, the ransom notes and also tricks of extorting the ransom money quantity may vary depending on particular regional (local) settings. The ransom money notes and techniques of extorting the ransom money quantity may differ depending on certain local (regional) settings.

Ransomware injection

As an example:

    Faulty signals concerning unlicensed software application.

    In certain areas, the Trojans typically wrongfully report having discovered some unlicensed applications enabled on the sufferer’s device. The alert then requires the individual to pay the ransom.

    Faulty declarations concerning unlawful web content.

    In countries where software application piracy is less popular, this method is not as efficient for the cyber scams. Additionally, the Ransom.Koolova popup alert might incorrectly declare to be stemming from a law enforcement organization and also will report having located kid pornography or various other illegal information on the tool.

    Ransom.Koolova popup alert may wrongly claim to be deriving from a regulation enforcement institution as well as will certainly report having located youngster pornography or other unlawful data on the tool. The alert will in a similar way contain a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 4B80ACF0
md5: 7afca2b34c94997e671c41558d7859e6
name: 7AFCA2B34C94997E671C41558D7859E6.mlw
sha1: c4c25e7c26b5370966e85f00428e5335dd55e15f
sha256: 63a145381e355bb97e9b8ff44a1fa8a07065bc98dda6afe9c53eaa02cbc847f0
sha512: 7bc735c08ed6f089a64dc16827873446d9adaa1e0945565021b37845deb97f0a11b379413b9dfbb7d3560a9137dc28f2c199839f41f38e619d34819be9106f24
ssdeep: 768:sYQEq51KNtazCJXTPB7d0kAF10ttSwUqk:sVEqPwt7XbBx0ki2tSwVk
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2015
Assembly Version:
InternalName: DUMB.exe
ProductName: DUMB
FileDescription: DUMB
OriginalFilename: DUMB.exe

Ransom.Koolova also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0056a4581 )
Lionic Trojan.Win32.Koolova.4!c
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.15077
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.DUMB
Cylance Unsafe
Zillya Trojan.Filecoder.Win32.8484
Alibaba Ransom:MSIL/FileCoder.e59355f2
K7GW Trojan ( 0056a4581 )
Cybereason malicious.34c949
ESET-NOD32 a variant of MSIL/Filecoder.DY
APEX Malicious
Avast Win32:RansomX-gen [Ransom]
ClamAV Win.Ransomware.Koolova-9850494-0
Kaspersky HEUR:Trojan-Ransom.MSIL.Encoder.gen
BitDefender Generic.Ransom.Koolova.D47E19AD
NANO-Antivirus Trojan.Win32.Filecoder.fjwcei
MicroWorld-eScan Generic.Ransom.Koolova.D47E19AD
Tencent Win32.Trojan.Generic.Amcy
Ad-Aware Generic.Ransom.Koolova.D47E19AD
Sophos Mal/Crypdum-A
BitDefenderTheta Gen:NN.ZemsilF.34170.cm0@aG4lBOf
McAfee-GW-Edition GenericRXEF-BT!7AFCA2B34C94
FireEye Generic.Ransom.Koolova.D47E19AD
Emsisoft Generic.Ransom.Koolova.D47E19AD (B)
SentinelOne Static AI – Suspicious PE
Avira HEUR/AGEN.1133963
Antiy-AVL Trojan/Generic.ASMalwS.28CBADA
Microsoft Ransom:MSIL/FileCoder.PA!MTB
GData MSIL.Trojan-Ransom.Filecoder.AN
AhnLab-V3 Trojan/Win32.Occamy.C2499816
McAfee GenericRXEF-BT!7AFCA2B34C94
MAX malware (ai score=89)
VBA32 TScope.Trojan.MSIL
Malwarebytes Ransom.Koolova
Panda Trj/GdSda.A
Ikarus Trojan.MSIL.Filecoder
Fortinet MSIL/Filecoder.DY!tr.ransom
AVG Win32:RansomX-gen [Ransom]

How to remove Ransom.Koolova 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

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 Ransom.Koolova 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 Ransom.Koolova 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: http://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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