What is Trojan:Win32/Ymacco.AA91 infection?

In this article you will discover regarding the definition of Trojan:Win32/Ymacco.AA91 and also its adverse impact on your computer. Such ransomware are a kind of malware that is specified by on-line scams to demand paying the ransom money by a sufferer.

GridinSoft Anti-Malware Review

GridinSoft Anti-Malware

Removing computer viruses manually may take hours and may damage your PC in the process. I recommend you to download GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
6-day trial available for threats removal.
EULA | Privacy Policy | GridinSoft

In the majority of the instances, Trojan:Win32/Ymacco.AA91 ransomware will instruct its victims to start funds move for the objective of reducing the effects of the amendments that the Trojan infection has presented to the sufferer’s device.

Trojan:Win32/Ymacco.AA91 Summary

These alterations can be as follows:

  • Ciphering the records located on the victim’s disk drive — so the target can no more utilize the data;
  • Preventing regular access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


The most common networks whereby Trojan:Win32/Ymacco.AA91 are injected are:

  • By ways of phishing emails;
  • As an effect of customer winding up on a resource that hosts a harmful software program;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s PC or avoid the device from working in an appropriate fashion – while likewise placing a ransom money note that states the need for the targets to effect the repayment for the function of decrypting the papers or recovering the documents system back to the preliminary problem. In the majority of circumstances, the ransom money note will certainly show up when the client restarts the COMPUTER after the system has already been harmed.

Trojan:Win32/Ymacco.AA91 circulation channels.

In various edges of the world, Trojan:Win32/Ymacco.AA91 grows by jumps and also bounds. Nevertheless, the ransom money notes and methods of extorting the ransom money amount may differ depending on specific neighborhood (local) setups. The ransom money notes as well as techniques of obtaining the ransom money amount might differ depending on particular regional (local) settings.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software.

    In particular locations, the Trojans commonly wrongfully report having discovered some unlicensed applications enabled on the target’s device. The sharp then requires the user to pay the ransom money.

    Faulty statements about unlawful material.

    In countries where software program piracy is much less prominent, this method is not as reliable for the cyber fraudulences. Additionally, the Trojan:Win32/Ymacco.AA91 popup alert may incorrectly declare to be originating from a police institution and also will certainly report having located kid pornography or various other prohibited data on the gadget.

    Trojan:Win32/Ymacco.AA91 popup alert might wrongly assert to be deriving from a legislation enforcement establishment as well as will certainly report having located kid pornography or other unlawful data on the device. The alert will similarly consist of a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: C2914DCD
md5: 258361fcf4a17446c1b10f3d092e9dbc
name: 258361FCF4A17446C1B10F3D092E9DBC.mlw
sha1: bda8e44834f359dbc466aff127a57d8d688b8e14
sha256: 91949fd953e9c4bf25a1e967eb7ac3ddd94707fe44293981d28dafb3290bf217
sha512: 4686f1f3fc2854c7d04d4c058348390cf50ce759a4e8bd2afb1610876ddde17f3935b0412c1ae32d80b1f47a9aee49617f333ac03d0047730db8137b988188ef
ssdeep: 12288:OsPM9KL/8aUTqcNfeMpDIfL1viR0AARm3zGtoYjrBjIhmX0q4lZ2H39BKsqDiBM7:3PMUb+2cNxIZM03Q3NaRle6f6Diyd4o
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ymacco.AA91 also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Cynet Malicious (score: 100)
ALYac Trojan.RansomKD.6236933
Sangfor Win.Virus.Virlock-6332874-0
CrowdStrike win/malicious_confidence_100% (W)
BitDefender Trojan.RansomKD.6236933
Cybereason malicious.cf4a17
Cyren W32/S-2622d5c8!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
ClamAV Win.Virus.Virlock-6332874-0
SUPERAntiSpyware Ransom.PolyRansom/Variant
MicroWorld-eScan Trojan.RansomKD.6236933
Ad-Aware Trojan.RansomKD.6236933
Sophos ML/PE-A
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Ransom.dc
Emsisoft Trojan.RansomKD.6236933 (B)
SentinelOne Static AI – Suspicious PE
eGambit Unsafe.AI_Score_99%
Microsoft Trojan:Win32/Ymacco.AA91
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.RansomKD.6236933
McAfee Artemis!258361FCF4A1
MAX malware (ai score=96)
Malwarebytes PolyRansom.Virus.FileInfector.DDS
Rising Trojan.Generic@ML.84 (RDML:t7MOXY9MIBPu3F4catAezQ)
Ikarus Trojan.Win32.Agent
MaxSecure Trojan.Malware.121218.susgen
Qihoo-360 Win32/Ransom.Generic.HgIASOcA

How to remove Trojan:Win32/Ymacco.AA91 ransomware?

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 Trojan:Win32/Ymacco.AA91 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 Trojan:Win32/Ymacco.AA91 you can always ask me in the comments for getting help.

User Review
0 (0 votes)
Comments Rating 0 (0 reviews)


  1. GridinSoft Anti-Malware Review from HowToFix site:
  2. More information about GridinSoft products:

About the author

Robert Bailey

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

Leave a Reply


This site uses Akismet to reduce spam. Learn how your comment data is processed.