Trojan:Win32/Ymacco.AAAA

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

What is Trojan:Win32/Ymacco.AAAA infection?

In this short article you will certainly discover regarding the interpretation of Trojan:Win32/Ymacco.AAAA and also its adverse impact on your computer system. Such ransomware are a form of malware that is specified by online scams to require paying the ransom money by a target.

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In the majority of the situations, Trojan:Win32/Ymacco.AAAA virus will instruct its victims to launch funds transfer for the function of counteracting the changes that the Trojan infection has introduced to the victim’s device.

Trojan:Win32/Ymacco.AAAA Summary

These alterations 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.
  • Compression (or decompression);
  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • Starts servers listening on 127.0.0.1:17717;
  • A process created a hidden window;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • A scripting utility was executed;
  • Steals private information from local Internet browsers;
  • Attempts to execute a powershell command with suspicious parameter/s;
  • Collects information about installed applications;
  • Likely virus infection of existing system binary;
  • Harvests credentials from local FTP client softwares;
  • Harvests information related to installed instant messenger clients;
  • Harvests information related to installed mail clients;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the target’s disk drive — so the target can no more utilize the information;
  • 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.

Trojan:Win32/Ymacco.AAAA

One of the most normal networks through which Trojan:Win32/Ymacco.AAAA Ransomware are infused are:

  • By means of phishing emails;
  • As a consequence of user ending up on a resource that holds a destructive software application;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the target’s PC or stop the gadget from working in a correct manner – while also placing a ransom note that states the need for the sufferers to impact the repayment for the objective of decrypting the files or restoring the data system back to the initial condition. In the majority of instances, the ransom note will certainly show up when the client reboots the COMPUTER after the system has currently been damaged.

Trojan:Win32/Ymacco.AAAA distribution networks.

In numerous corners of the world, Trojan:Win32/Ymacco.AAAA grows by jumps as well as bounds. Nonetheless, the ransom money notes and also methods of extorting the ransom money quantity may differ depending upon particular regional (local) setups. The ransom notes and techniques of extorting the ransom amount may vary depending on specific regional (local) settings.

Ransomware injection

For instance:

    Faulty signals about unlicensed software application.

    In particular locations, the Trojans commonly wrongfully report having actually identified some unlicensed applications allowed on the sufferer’s gadget. The alert after that requires the customer to pay the ransom money.

    Faulty declarations about illegal material.

    In nations where software application piracy is much less prominent, this approach is not as effective for the cyber scams. Conversely, the Trojan:Win32/Ymacco.AAAA popup alert might wrongly claim to be stemming from a law enforcement organization and will report having located child porn or other unlawful data on the device.

    Trojan:Win32/Ymacco.AAAA popup alert may incorrectly assert to be acquiring from a regulation enforcement establishment as well as will certainly report having located kid pornography or various other prohibited data on the device. The alert will likewise include a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 1C8792A4
md5: bcea99dc967343c9cc6a0437a39ec193
name: BCEA99DC967343C9CC6A0437A39EC193.mlw
sha1: ee4ee9565ee650d066bb47af8d1598094d980585
sha256: aaa50e2c4ff295cc51f36b925825087fa24543e77511081463e96a0723bbee22
sha512: 8a5d783d805174bdfec61a82e7160e8432c3ff4171ee5f76f99b7c06b88d6b2dfae2f913a04aa25aa3e28c0b92414b787ea68961cacd57d8cb7b6540dff80b54
ssdeep: 98304:0cwUn/jybPL2BquL2ZHpzB6sDW4bzia54B8iRf9irbBOBy:8U/j+LkqJHpznNu8iFUrbX
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translations: 0x0155 0x0257

Trojan:Win32/Ymacco.AAAA also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKD.35306880
FireEye Generic.mg.bcea99dc967343c9
McAfee Trojan-FSUC!BCEA99DC9673
Cylance Unsafe
Sangfor Malware
CrowdStrike win/malicious_confidence_90% (D)
BitDefender Trojan.GenericKD.35306880
K7GW Trojan ( 0056f9be1 )
K7AntiVirus Trojan ( 0056f9be1 )
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:BotX-gen [Trj]
Alibaba Trojan:Win32/Kryptik.62e02e38
AegisLab Trojan.Multi.Generic.4!c
Ad-Aware Trojan.GenericKD.35306880
DrWeb Trojan.Siggen11.35110
Invincea Generic ML PUA (PUA)
McAfee-GW-Edition BehavesLike.Win32.Generic.rc
Emsisoft Trojan-Dropper.Agent (A)
Ikarus Trojan.Win32.Ranumbot
MAX malware (ai score=84)
Microsoft Trojan:Win32/Ymacco.AAAA
Arcabit Trojan.Generic.D21ABD80
GData Win32.Trojan-Stealer.Petef.2QIDZI
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.RL_Emotet.R355983
BitDefenderTheta Gen:NN.ZexaF.34634.@xX@amghmJpO
ALYac Trojan.GenericKD.35306880
VBA32 BScope.Trojan.Azorult
Malwarebytes Ransom.LockBit
Rising [email protected] (RDML:DcjIfap5H5m4RIU/RN40cQ)
SentinelOne Static AI – Malicious PE
Fortinet W32/GenKryptik.EWVQ!tr
AVG Win32:BotX-gen [Trj]
Cybereason malicious.65ee65
Qihoo-360 Win32/Trojan.BO.651

How to remove Trojan:Win32/Ymacco.AAAA 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

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.AAAA 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.AAAA you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

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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