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

What is Ransom.Jigsaw.A4 infection?

In this article you will locate about the interpretation of Ransom.Jigsaw.A4 and also its negative impact on your computer. Such ransomware are a form of malware that is elaborated by on-line frauds to demand paying the ransom by a target.

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In the majority of the situations, Ransom.Jigsaw.A4 ransomware will certainly instruct its targets to launch funds move for the function of neutralizing the modifications that the Trojan infection has presented to the sufferer’s tool.

Ransom.Jigsaw.A4 Summary

These adjustments can be as complies with:

  • The binary likely contains encrypted or compressed data.;
  • Ciphering the documents located on the target’s disk drive — so the target can no longer utilize the information;
  • Preventing regular accessibility to the victim’s workstation;


One of the most regular networks where Ransom.Jigsaw.A4 Ransomware are injected are:

  • By methods of phishing emails;
  • As an effect of customer ending up on a source that hosts a malicious software;

As soon as the Trojan is effectively injected, it will either cipher the information on the sufferer’s PC or protect against the gadget from working in an appropriate way – while likewise positioning a ransom note that discusses the need for the targets to effect the repayment for the purpose of decrypting the files or restoring the file system back to the initial condition. In most circumstances, the ransom note will come up when the customer reboots the COMPUTER after the system has actually currently been harmed.

Ransom.Jigsaw.A4 circulation networks.

In different corners of the globe, Ransom.Jigsaw.A4 expands by leaps as well as bounds. Nevertheless, the ransom notes and techniques of obtaining the ransom money quantity may differ depending on particular local (regional) setups. The ransom notes and tricks of extorting the ransom money quantity might vary depending on specific neighborhood (local) settings.

Ransomware injection

As an example:

    Faulty signals regarding unlicensed software program.

    In certain locations, the Trojans usually wrongfully report having actually detected some unlicensed applications allowed on the target’s gadget. The alert then requires the customer to pay the ransom.

    Faulty statements regarding prohibited material.

    In countries where software program piracy is much less prominent, this approach is not as reliable for the cyber scams. Additionally, the Ransom.Jigsaw.A4 popup alert might incorrectly claim to be stemming from a police organization and also will certainly report having situated youngster porn or various other unlawful data on the gadget.

    Ransom.Jigsaw.A4 popup alert might falsely declare to be obtaining from a regulation enforcement organization and will report having situated kid pornography or various other illegal information on the gadget. The alert will in a similar way have a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 9F6FD92E
md5: aedc22ca137fce3f6671674e5385b5a6
name: AEDC22CA137FCE3F6671674E5385B5A6.mlw
sha1: 3379b39c1286d593f71d7482b91c73083c3275aa
sha256: f11f0569bd15ffa52fbc36d1120d0a7c97774d273375f79573313e2ef127c47f
sha512: 674dd6e2fac53c783d6907fdc72c252b2a6fdb940d9f6a1e00e42692c3bdeb52089f2253b1b34aebe774c8267fa95f2993645358fced1c40a0cba956836b6251
ssdeep: 12288:mNLNPkf1OT2EUG9hTF/h0OH0FCO3tDVo3sE6:m2i2E1hdeOUFCCe
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: xa9 2003- 2018 Apple Inc. All rights reserved.
Assembly Version:
InternalName: itunes.exe.exe
CompanyName: Apple Inc.
LegalTrademarks: Apple
Comments: iTunes
ProductName: iTunes
FileDescription: iTunes
OriginalFilename: itunes.exe.exe

Ransom.Jigsaw.A4 also known as:

K7AntiVirusTrojan ( 0053fc801 )
CynetMalicious (score: 100)
CrowdStrikewin/malicious_confidence_70% (D)
K7GWTrojan ( 0053fc801 )
SentinelOneStatic AI – Malicious PE
RisingTrojan.Generic@ML.94 (RDML:tV4tRvFv8tMaO1CRZ6Mfzw)

How to remove Ransom.Jigsaw.A4 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 Ransom.Jigsaw.A4 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.Jigsaw.A4 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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