Trojan:Win32/Ymacco.AA26

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

What is Trojan:Win32/Ymacco.AA26 infection?

In this short article you will discover concerning the interpretation of Trojan:Win32/Ymacco.AA26 and also its negative impact on your computer. Such ransomware are a form of malware that is clarified by online scams to demand paying the ransom money by a sufferer.

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Most of the instances, Trojan:Win32/Ymacco.AA26 infection will certainly instruct its sufferers to start funds move for the function of reducing the effects of the changes that the Trojan infection has presented to the target’s gadget.

Trojan:Win32/Ymacco.AA26 Summary

These modifications 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.
  • 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.
  • Detected script timer window indicative of sleep style evasion;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Performs some HTTP requests;
  • 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;
  • Uses Windows utilities for basic functionality;
  • Installs itself for autorun at Windows startup.

    There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Creates a copy of itself;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files found on the victim’s hard disk — so the sufferer can no longer utilize the data;
  • Preventing routine accessibility to the target’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.AA26

The most normal networks whereby Trojan:Win32/Ymacco.AA26 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 consequence of individual ending up on a source that organizes a harmful software program;

As quickly as the Trojan is effectively injected, it will either cipher the information on the victim’s PC or protect against the device from operating in a proper manner – while likewise positioning a ransom money note that mentions the need for the sufferers to effect the repayment for the function of decrypting the records or bring back the data system back to the preliminary condition. In the majority of circumstances, the ransom money note will certainly come up when the client restarts the COMPUTER after the system has actually already been harmed.

Trojan:Win32/Ymacco.AA26 circulation channels.

In various corners of the globe, Trojan:Win32/Ymacco.AA26 grows by jumps as well as bounds. However, the ransom notes and also tricks of extorting the ransom money quantity might differ depending upon certain neighborhood (regional) settings. The ransom money notes as well as techniques of extorting the ransom money amount may vary depending on specific local (local) settings.

Ransomware injection

For example:

    Faulty alerts about unlicensed software application.

    In particular locations, the Trojans typically wrongfully report having detected some unlicensed applications allowed on the victim’s device. The sharp then requires the user to pay the ransom.

    Faulty declarations regarding illegal content.

    In nations where software application piracy is less prominent, this technique is not as reliable for the cyber frauds. Additionally, the Trojan:Win32/Ymacco.AA26 popup alert may falsely declare to be deriving from a law enforcement institution and also will certainly report having situated child porn or other illegal data on the gadget.

    Trojan:Win32/Ymacco.AA26 popup alert might incorrectly declare to be deriving from a law enforcement organization and will certainly report having located kid pornography or other unlawful information on the tool. The alert will likewise consist of a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: B2A8BF19
md5: 04b88a3eb0a76036e10e87a3871c215f
name: upload_file
sha1: 327f8b95af6ee028447153366d6dc1fa1b45c21f
sha256: 359a83d05d6d30510f26f95146ddad7da943eb4e7014fa5c3a6caa41ac102681
sha512: 7949475844fb05df537ff43af30c6dfc12d7cea8b9b26014f7b34958d6acdae542f13ab3d6edb97cec3a73879c3d78c74757e5fef1516c9d944b37fe6ee36682
ssdeep: 6144:T2EDYH4aaPx2v909HPNvg/7K4GHTOmKcdKsXv5o7bKSMwaM0hY:qV5l09lg/7HGqm30sXv5gKSMwaM0hY
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ymacco.AA26 also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKDZ.69072
FireEye Generic.mg.04b88a3eb0a76036
McAfee Artemis!04B88A3EB0A7
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
K7AntiVirus Trojan ( 0050b2d01 )
BitDefender Trojan.GenericKDZ.69072
K7GW Trojan ( 0050b2d01 )
Cybereason malicious.eb0a76
Invincea heuristic
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky Trojan-Spy.Win32.Zbot.zzvr
Alibaba Ransom:Win32/generic.ali2000010
AegisLab Trojan.Win32.Malicious.4!c
Tencent Malware.Win32.Gencirc.10bbe17d
Ad-Aware Trojan.GenericKDZ.69072
Sophos Mal/Generic-S
F-Secure Heuristic.HEUR/AGEN.1115437
DrWeb Trojan.Encoder.32240
Zillya Trojan.SageCrypt.Win32.204
TrendMicro Mal_MiliCry-2t
Fortinet W32/Kryptik.GPRG!tr
Emsisoft Trojan.GenericKDZ.69072 (B)
SentinelOne DFI – Suspicious PE
Jiangmin Trojan.SageCrypt.gg
Avira HEUR/AGEN.1115437
MAX malware (ai score=85)
Antiy-AVL Trojan[Ransom]/Win32.SageCrypt
Arcabit Trojan.Generic.D10DD0
ZoneAlarm Trojan-Spy.Win32.Zbot.zzvr
Microsoft Trojan:Win32/Ymacco.AA26
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Kryptik.R346410
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34142.zOW@aGbcdbdi
ALYac Trojan.GenericKDZ.69072
TACHYON Ransom/W32.SageCrypt.416256
VBA32 Hoax.SageCrypt
Panda Trj/CI.A
ESET-NOD32 a variant of Win32/Kryptik.GPRG
TrendMicro-HouseCall Mal_MiliCry-2t
Rising Stealer.Delf!8.415 (CLOUD)
Ikarus Trojan.Win32.Crypt
eGambit Unsafe.AI_Score_99%
GData Trojan.GenericKDZ.69072
AVG Win32:Trojan-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Trojan.Generic

How to remove Trojan:Win32/Ymacco.AA26 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.AA26 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.AA26 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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