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

What is Trojan:Win32/Ymacco.AA94 infection?

In this short article you will certainly discover concerning the definition of Trojan:Win32/Ymacco.AA94 as well as its adverse effect on your computer system. Such ransomware are a type of malware that is specified by on-line fraudulences to require paying the ransom by a target.

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In the majority of the cases, Trojan:Win32/Ymacco.AA94 infection will instruct its targets to start funds move for the objective of counteracting the modifications that the Trojan infection has actually presented to the target’s gadget.

Trojan:Win32/Ymacco.AA94 Summary

These adjustments can be as follows:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Presents an Authenticode digital signature;
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • Unconventionial language used in binary resources: Vietnamese;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the victim’s hard disk — so the victim can no longer make use of the data;
  • Preventing regular accessibility to the victim’s workstation;


The most normal networks whereby Trojan:Win32/Ymacco.AA94 Ransomware Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a repercussion of customer ending up on a source that organizes a malicious software program;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the information on the target’s PC or stop the device from operating in a correct fashion – while also positioning a ransom money note that discusses the need for the victims to impact the payment for the objective of decrypting the files or restoring the file system back to the initial problem. In the majority of circumstances, the ransom money note will certainly turn up when the client restarts the COMPUTER after the system has actually currently been damaged.

Trojan:Win32/Ymacco.AA94 circulation networks.

In different corners of the world, Trojan:Win32/Ymacco.AA94 grows by leaps and bounds. However, the ransom money notes and methods of obtaining the ransom amount might differ relying on certain local (local) settings. The ransom money notes and methods of extorting the ransom quantity may differ depending on specific local (local) setups.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software application.

    In particular locations, the Trojans typically wrongfully report having detected some unlicensed applications enabled on the sufferer’s device. The sharp after that requires the individual to pay the ransom.

    Faulty declarations concerning illegal material.

    In countries where software piracy is much less preferred, this approach is not as effective for the cyber fraudulences. Conversely, the Trojan:Win32/Ymacco.AA94 popup alert may incorrectly claim to be stemming from a police establishment and also will report having located kid porn or other unlawful information on the gadget.

    Trojan:Win32/Ymacco.AA94 popup alert might falsely declare to be deriving from a legislation enforcement establishment as well as will report having situated kid pornography or various other illegal information on the device. The alert will in a similar way include a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 91475393
md5: c95621a5833fdf0e55febef5da3e29b0
name: C95621A5833FDF0E55FEBEF5DA3E29B0.mlw
sha1: f164bb83927b2c0df1ba30b2ad2027865fed8630
sha256: 943ff6246e04df7820f06c61b030b6c18249664ad2fbf34d09f3e6306e565c88
sha512: 89a91d179d69107ea446ee985c356878de0a952b898941430c7788468529ba975824f428400cf2481670cdc73d00c5050fecda0869fc7130271fc270145d5ca8
ssdeep: 12288:gZfbY6IbcKK04S+955Vy7XRVXCP0XbAfX47xC/eKRKBT:gF8OKfKPcyeUfX47xCy
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: TTTTTTTT992-2019. All rights reserved.
InternalName: TTTTTTTTetWal.exe
FileVersion: 10.7.TTTTTTTT79.0
CompanyName: TTTTTTTT
LegalTrademarks: TTTTTTTTtrademarks of ESET.
ProductName: TTTTTTTTalcurity
ProductVersion: 1TTTTTTTT2.1.34.0
FileDescription: eTTTTTTTTtWal
OriginalFilename: TTTTTTTTr.exe
Translation: 0x0409 0x04e4

Trojan:Win32/Ymacco.AA94 also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
McAfee Fareit-FZO!C95621A5833F
Malwarebytes Trojan.Dropper
AegisLab Trojan.Win32.Blocker.j!c
Sangfor Malware
K7AntiVirus Trojan-Downloader ( 00570d4e1 )
BitDefender Gen:Variant.Zusy.353921
K7GW Trojan-Downloader ( 00570d4e1 )
Arcabit Trojan.Zusy.D56681
Symantec ML.Attribute.HighConfidence
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan-Ransom.Win32.Blocker.gen
Alibaba TrojanDownloader:Win32/Fareit.9a650a46
MicroWorld-eScan Gen:Variant.Zusy.353921
Ad-Aware Gen:Variant.Zusy.353921
Sophos Mal/Generic-S
Comodo Malware@#wso5g4oq26nx
F-Secure Trojan.TR/Dldr.Delf.zxeid
DrWeb Trojan.DownLoader36.26314
TrendMicro TrojanSpy.Win32.FAREIT.THLOIBO
McAfee-GW-Edition Fareit-FZO!C95621A5833F
Emsisoft Gen:Variant.Zusy.353921 (B)
Jiangmin AdWare.Generic.kesv
Avira TR/Dldr.Delf.zxeid
eGambit PE.Heur.InvalidSig
MAX malware (ai score=82)
Kingsoft Win32.Troj.Undef.(kcloud)
Gridinsoft Trojan.Win32.Downloader.oa!s1
Microsoft Trojan:Win32/Ymacco.AA94
ZoneAlarm HEUR:Trojan-Ransom.Win32.Blocker.gen
GData Gen:Variant.Zusy.353921
AhnLab-V3 Trojan/Win32.Fareit.R357422
VBA32 BScope.Trojan.Wacatac
ALYac Gen:Variant.Zusy.353921
ESET-NOD32 Win32/TrojanDownloader.Delf.DCJ
TrendMicro-HouseCall TrojanSpy.Win32.FAREIT.THLOIBO
Ikarus Trojan-Downloader.Win32.Delf
Fortinet W32/Fareit.FZO!tr
BitDefenderTheta Gen:NN.ZelphiF.34670.QG2@amo6hLcO
AVG FileRepMalware
CrowdStrike win/malicious_confidence_60% (D)
Qihoo-360 Generic/Trojan.89d

How to remove Trojan:Win32/Ymacco.AA94 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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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 Trojan:Win32/Ymacco.AA94 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:

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If the guide doesn’t help you to remove Trojan:Win32/Ymacco.AA94 you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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